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annotate roundup/backends/rdbms_common.py @ 1491:393ab6e36540 maint-0.5

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fixed sqlite rollback/caching bug [SF#689383]
author Richard Jones <richard@users.sourceforge.net>
date Thu, 06 Mar 2003 05:46:57 +0000
parents 31cc79f966ac
children 8fd1ad93f920
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1491
393ab6e36540 fixed sqlite rollback/caching bug [SF#689383]
Richard Jones <richard@users.sourceforge.net>
parents: 1481
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1 # $Id: rdbms_common.py,v 1.27.2.5 2003-03-06 05:46:57 richard Exp $
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2 ''' Relational database (SQL) backend common code.
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3
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4 Basics:
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5
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6 - map roundup classes to relational tables
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7 - automatically detect schema changes and modify the table schemas
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8 appropriately (we store the "database version" of the schema in the
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9 database itself as the only row of the "schema" table)
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10 - multilinks (which represent a many-to-many relationship) are handled through
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11 intermediate tables
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12 - journals are stored adjunct to the per-class tables
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13 - table names and columns have "_" prepended so the names can't clash with
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14 restricted names (like "order")
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15 - retirement is determined by the __retired__ column being true
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16
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17 Database-specific changes may generally be pushed out to the overridable
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18 sql_* methods, since everything else should be fairly generic. There's
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19 probably a bit of work to be done if a database is used that actually
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20 honors column typing, since the initial databases don't (sqlite stores
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21 everything as a string, and gadfly stores anything that's marsallable).
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22 '''
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23
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24 # standard python modules
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25 import sys, os, time, re, errno, weakref, copy
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26
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27 # roundup modules
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28 from roundup import hyperdb, date, password, roundupdb, security
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29 from roundup.hyperdb import String, Password, Date, Interval, Link, \
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e6b2d51e5b95 backport fix from HEAD
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30 Multilink, DatabaseError, Boolean, Number, Node
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31 from roundup.backends import locking
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32
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33 # support
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34 from blobfiles import FileStorage
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35 from roundup.indexer import Indexer
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36 from sessions import Sessions
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37
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38 # number of rows to keep in memory
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39 ROW_CACHE_SIZE = 100
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40
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41 class Database(FileStorage, hyperdb.Database, roundupdb.Database):
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42 ''' Wrapper around an SQL database that presents a hyperdb interface.
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43
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44 - some functionality is specific to the actual SQL database, hence
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45 the sql_* methods that are NotImplemented
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46 - we keep a cache of the latest ROW_CACHE_SIZE row fetches.
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47 '''
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48 def __init__(self, config, journaltag=None):
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49 ''' Open the database and load the schema from it.
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50 '''
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51 self.config, self.journaltag = config, journaltag
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52 self.dir = config.DATABASE
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53 self.classes = {}
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54 self.indexer = Indexer(self.dir)
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55 self.sessions = Sessions(self.config)
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56 self.security = security.Security(self)
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57
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58 # additional transaction support for external files and the like
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59 self.transactions = []
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60
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61 # keep a cache of the N most recently retrieved rows of any kind
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62 # (classname, nodeid) = row
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63 self.cache = {}
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64 self.cache_lru = []
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65
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66 # database lock
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67 self.lockfile = None
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68
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69 # open a connection to the database, creating the "conn" attribute
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70 self.open_connection()
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71
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72 def clearCache(self):
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73 self.cache = {}
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74 self.cache_lru = []
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75
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76 def open_connection(self):
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77 ''' Open a connection to the database, creating it if necessary
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78 '''
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79 raise NotImplemented
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80
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81 def sql(self, sql, args=None):
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82 ''' Execute the sql with the optional args.
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83 '''
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84 if __debug__:
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85 print >>hyperdb.DEBUG, (self, sql, args)
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86 if args:
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87 self.cursor.execute(sql, args)
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88 else:
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89 self.cursor.execute(sql)
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90
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91 def sql_fetchone(self):
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92 ''' Fetch a single row. If there's nothing to fetch, return None.
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93 '''
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94 raise NotImplemented
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95
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96 def sql_stringquote(self, value):
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97 ''' Quote the string so it's safe to put in the 'sql quotes'
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98 '''
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99 return re.sub("'", "''", str(value))
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100
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101 def save_dbschema(self, schema):
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102 ''' Save the schema definition that the database currently implements
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103 '''
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104 raise NotImplemented
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105
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106 def load_dbschema(self):
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107 ''' Load the schema definition that the database currently implements
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108 '''
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109 raise NotImplemented
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110
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111 def post_init(self):
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112 ''' Called once the schema initialisation has finished.
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113
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114 We should now confirm that the schema defined by our "classes"
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115 attribute actually matches the schema in the database.
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116 '''
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117 # now detect changes in the schema
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118 save = 0
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119 for classname, spec in self.classes.items():
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120 if self.database_schema.has_key(classname):
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121 dbspec = self.database_schema[classname]
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122 if self.update_class(spec, dbspec):
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123 self.database_schema[classname] = spec.schema()
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124 save = 1
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125 else:
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126 self.create_class(spec)
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127 self.database_schema[classname] = spec.schema()
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128 save = 1
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129
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130 for classname in self.database_schema.keys():
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131 if not self.classes.has_key(classname):
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132 self.drop_class(classname)
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133
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134 # update the database version of the schema
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135 if save:
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136 self.sql('delete from schema')
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137 self.save_dbschema(self.database_schema)
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138
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139 # reindex the db if necessary
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140 if self.indexer.should_reindex():
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141 self.reindex()
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142
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143 # commit
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144 self.conn.commit()
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145
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146 # figure the "curuserid"
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147 if self.journaltag is None:
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148 self.curuserid = None
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149 elif self.journaltag == 'admin':
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150 # admin user may not exist, but always has ID 1
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151 self.curuserid = '1'
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152 else:
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153 self.curuserid = self.user.lookup(self.journaltag)
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154
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155 def reindex(self):
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156 for klass in self.classes.values():
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157 for nodeid in klass.list():
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158 klass.index(nodeid)
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159 self.indexer.save_index()
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160
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161 def determine_columns(self, properties):
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162 ''' Figure the column names and multilink properties from the spec
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163
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164 "properties" is a list of (name, prop) where prop may be an
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165 instance of a hyperdb "type" _or_ a string repr of that type.
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166 '''
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167 cols = ['_activity', '_creator', '_creation']
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168 mls = []
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169 # add the multilinks separately
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170 for col, prop in properties:
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171 if isinstance(prop, Multilink):
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172 mls.append(col)
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173 elif isinstance(prop, type('')) and prop.find('Multilink') != -1:
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174 mls.append(col)
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175 else:
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176 cols.append('_'+col)
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177 cols.sort()
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178 return cols, mls
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179
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180 def update_class(self, spec, old_spec):
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181 ''' Determine the differences between the current spec and the
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182 database version of the spec, and update where necessary
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183 '''
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184 new_spec = spec
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185 new_has = new_spec.properties.has_key
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186
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187 new_spec = new_spec.schema()
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188 if new_spec == old_spec:
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189 # no changes
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190 return 0
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191
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192 if __debug__:
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193 print >>hyperdb.DEBUG, 'update_class FIRING'
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194
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195 # key property changed?
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196 if old_spec[0] != new_spec[0]:
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197 if __debug__:
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198 print >>hyperdb.DEBUG, 'update_class setting keyprop', `spec[0]`
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199 # XXX turn on indexing for the key property
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200
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201 # detect multilinks that have been removed, and drop their table
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202 old_has = {}
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203 for name,prop in old_spec[1]:
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204 old_has[name] = 1
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205 if not new_has(name) and isinstance(prop, Multilink):
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206 # it's a multilink, and it's been removed - drop the old
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207 # table
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208 sql = 'drop table %s_%s'%(spec.classname, prop)
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209 if __debug__:
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210 print >>hyperdb.DEBUG, 'update_class', (self, sql)
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211 self.cursor.execute(sql)
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212 continue
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213 old_has = old_has.has_key
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214
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215 # now figure how we populate the new table
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216 fetch = [] # fetch these from the old table
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217 properties = spec.getprops()
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218 for propname,x in new_spec[1]:
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219 prop = properties[propname]
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220 if isinstance(prop, Multilink):
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221 if not old_has(propname):
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222 # we need to create the new table
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223 self.create_multilink_table(spec, propname)
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224 elif old_has(propname):
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225 # we copy this col over from the old table
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226 fetch.append('_'+propname)
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227
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228 # select the data out of the old table
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229 fetch.append('id')
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230 fetch.append('__retired__')
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231 fetchcols = ','.join(fetch)
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232 cn = spec.classname
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233 sql = 'select %s from _%s'%(fetchcols, cn)
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234 if __debug__:
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235 print >>hyperdb.DEBUG, 'update_class', (self, sql)
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236 self.cursor.execute(sql)
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237 olddata = self.cursor.fetchall()
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238
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239 # drop the old table
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240 self.cursor.execute('drop table _%s'%cn)
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241
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242 # create the new table
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243 self.create_class_table(spec)
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244
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245 if olddata:
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246 # do the insert
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247 args = ','.join([self.arg for x in fetch])
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248 sql = 'insert into _%s (%s) values (%s)'%(cn, fetchcols, args)
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249 if __debug__:
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250 print >>hyperdb.DEBUG, 'update_class', (self, sql, olddata[0])
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251 for entry in olddata:
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252 self.cursor.execute(sql, *entry)
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253
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254 return 1
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255
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256 def create_class_table(self, spec):
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257 ''' create the class table for the given spec
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258 '''
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259 cols, mls = self.determine_columns(spec.properties.items())
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260
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261 # add on our special columns
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262 cols.append('id')
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263 cols.append('__retired__')
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264
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265 # create the base table
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266 scols = ','.join(['%s varchar'%x for x in cols])
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267 sql = 'create table _%s (%s)'%(spec.classname, scols)
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268 if __debug__:
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269 print >>hyperdb.DEBUG, 'create_class', (self, sql)
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270 self.cursor.execute(sql)
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271
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272 return cols, mls
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273
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274 def create_journal_table(self, spec):
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275 ''' create the journal table for a class given the spec and
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276 already-determined cols
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277 '''
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278 # journal table
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279 cols = ','.join(['%s varchar'%x
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280 for x in 'nodeid date tag action params'.split()])
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281 sql = 'create table %s__journal (%s)'%(spec.classname, cols)
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282 if __debug__:
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283 print >>hyperdb.DEBUG, 'create_class', (self, sql)
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284 self.cursor.execute(sql)
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285
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286 def create_multilink_table(self, spec, ml):
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287 ''' Create a multilink table for the "ml" property of the class
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288 given by the spec
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289 '''
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290 sql = 'create table %s_%s (linkid varchar, nodeid varchar)'%(
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291 spec.classname, ml)
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292 if __debug__:
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293 print >>hyperdb.DEBUG, 'create_class', (self, sql)
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294 self.cursor.execute(sql)
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295
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296 def create_class(self, spec):
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297 ''' Create a database table according to the given spec.
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298 '''
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299 cols, mls = self.create_class_table(spec)
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300 self.create_journal_table(spec)
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301
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302 # now create the multilink tables
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303 for ml in mls:
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304 self.create_multilink_table(spec, ml)
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305
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306 # ID counter
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307 sql = 'insert into ids (name, num) values (%s,%s)'%(self.arg, self.arg)
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308 vals = (spec.classname, 1)
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309 if __debug__:
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310 print >>hyperdb.DEBUG, 'create_class', (self, sql, vals)
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311 self.cursor.execute(sql, vals)
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312
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313 def drop_class(self, spec):
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314 ''' Drop the given table from the database.
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315
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316 Drop the journal and multilink tables too.
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317 '''
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318 # figure the multilinks
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319 mls = []
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320 for col, prop in spec.properties.items():
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321 if isinstance(prop, Multilink):
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322 mls.append(col)
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323
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324 sql = 'drop table _%s'%spec.classname
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325 if __debug__:
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326 print >>hyperdb.DEBUG, 'drop_class', (self, sql)
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327 self.cursor.execute(sql)
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328
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329 sql = 'drop table %s__journal'%spec.classname
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330 if __debug__:
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331 print >>hyperdb.DEBUG, 'drop_class', (self, sql)
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332 self.cursor.execute(sql)
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333
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334 for ml in mls:
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335 sql = 'drop table %s_%s'%(spec.classname, ml)
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336 if __debug__:
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337 print >>hyperdb.DEBUG, 'drop_class', (self, sql)
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338 self.cursor.execute(sql)
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339
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340 #
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341 # Classes
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342 #
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343 def __getattr__(self, classname):
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344 ''' A convenient way of calling self.getclass(classname).
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345 '''
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346 if self.classes.has_key(classname):
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347 if __debug__:
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348 print >>hyperdb.DEBUG, '__getattr__', (self, classname)
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349 return self.classes[classname]
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350 raise AttributeError, classname
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351
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352 def addclass(self, cl):
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353 ''' Add a Class to the hyperdatabase.
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354 '''
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355 if __debug__:
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356 print >>hyperdb.DEBUG, 'addclass', (self, cl)
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357 cn = cl.classname
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358 if self.classes.has_key(cn):
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359 raise ValueError, cn
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360 self.classes[cn] = cl
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361
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362 def getclasses(self):
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363 ''' Return a list of the names of all existing classes.
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364 '''
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365 if __debug__:
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366 print >>hyperdb.DEBUG, 'getclasses', (self,)
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367 l = self.classes.keys()
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368 l.sort()
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369 return l
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370
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371 def getclass(self, classname):
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372 '''Get the Class object representing a particular class.
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373
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374 If 'classname' is not a valid class name, a KeyError is raised.
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375 '''
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376 if __debug__:
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377 print >>hyperdb.DEBUG, 'getclass', (self, classname)
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378 try:
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379 return self.classes[classname]
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380 except KeyError:
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381 raise KeyError, 'There is no class called "%s"'%classname
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382
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383 def clear(self):
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384 ''' Delete all database contents.
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385
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386 Note: I don't commit here, which is different behaviour to the
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387 "nuke from orbit" behaviour in the *dbms.
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388 '''
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389 if __debug__:
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390 print >>hyperdb.DEBUG, 'clear', (self,)
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391 for cn in self.classes.keys():
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392 sql = 'delete from _%s'%cn
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393 if __debug__:
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394 print >>hyperdb.DEBUG, 'clear', (self, sql)
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395 self.cursor.execute(sql)
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396
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397 #
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398 # Node IDs
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399 #
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400 def newid(self, classname):
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401 ''' Generate a new id for the given class
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402 '''
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403 # get the next ID
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404 sql = 'select num from ids where name=%s'%self.arg
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405 if __debug__:
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406 print >>hyperdb.DEBUG, 'newid', (self, sql, classname)
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407 self.cursor.execute(sql, (classname, ))
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408 newid = self.cursor.fetchone()[0]
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409
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410 # update the counter
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411 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg)
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412 vals = (int(newid)+1, classname)
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413 if __debug__:
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414 print >>hyperdb.DEBUG, 'newid', (self, sql, vals)
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415 self.cursor.execute(sql, vals)
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416
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417 # return as string
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418 return str(newid)
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419
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420 def setid(self, classname, setid):
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421 ''' Set the id counter: used during import of database
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422 '''
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423 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg)
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424 vals = (setid, classname)
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425 if __debug__:
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426 print >>hyperdb.DEBUG, 'setid', (self, sql, vals)
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427 self.cursor.execute(sql, vals)
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428
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429 #
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430 # Nodes
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431 #
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432
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433 def addnode(self, classname, nodeid, node):
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434 ''' Add the specified node to its class's db.
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435 '''
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436 if __debug__:
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437 print >>hyperdb.DEBUG, 'addnode', (self, classname, nodeid, node)
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438 # gadfly requires values for all non-multilink columns
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439 cl = self.classes[classname]
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440 cols, mls = self.determine_columns(cl.properties.items())
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441
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442 # we'll be supplied these props if we're doing an import
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443 if not node.has_key('creator'):
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444 # add in the "calculated" properties (dupe so we don't affect
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445 # calling code's node assumptions)
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446 node = node.copy()
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447 node['creation'] = node['activity'] = date.Date()
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448 node['creator'] = self.curuserid
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449
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450 # default the non-multilink columns
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451 for col, prop in cl.properties.items():
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452 if not isinstance(col, Multilink):
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453 if not node.has_key(col):
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454 node[col] = None
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455
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456 # clear this node out of the cache if it's in there
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457 key = (classname, nodeid)
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458 if self.cache.has_key(key):
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459 del self.cache[key]
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460 self.cache_lru.remove(key)
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461
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462 # make the node data safe for the DB
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463 node = self.serialise(classname, node)
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464
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465 # make sure the ordering is correct for column name -> column value
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466 vals = tuple([node[col[1:]] for col in cols]) + (nodeid, 0)
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467 s = ','.join([self.arg for x in cols]) + ',%s,%s'%(self.arg, self.arg)
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468 cols = ','.join(cols) + ',id,__retired__'
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469
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470 # perform the inserts
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471 sql = 'insert into _%s (%s) values (%s)'%(classname, cols, s)
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472 if __debug__:
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473 print >>hyperdb.DEBUG, 'addnode', (self, sql, vals)
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474 self.cursor.execute(sql, vals)
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475
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476 # insert the multilink rows
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477 for col in mls:
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478 t = '%s_%s'%(classname, col)
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479 for entry in node[col]:
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480 sql = 'insert into %s (linkid, nodeid) values (%s,%s)'%(t,
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481 self.arg, self.arg)
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482 self.sql(sql, (entry, nodeid))
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483
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484 # make sure we do the commit-time extra stuff for this node
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485 self.transactions.append((self.doSaveNode, (classname, nodeid, node)))
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486
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487 def setnode(self, classname, nodeid, values, multilink_changes):
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488 ''' Change the specified node.
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489 '''
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490 if __debug__:
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491 print >>hyperdb.DEBUG, 'setnode', (self, classname, nodeid, values)
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492
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493 # clear this node out of the cache if it's in there
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494 key = (classname, nodeid)
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495 if self.cache.has_key(key):
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496 del self.cache[key]
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497 self.cache_lru.remove(key)
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498
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499 # add the special props
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500 values = values.copy()
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501 values['activity'] = date.Date()
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502
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503 # make db-friendly
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504 values = self.serialise(classname, values)
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505
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506 cl = self.classes[classname]
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507 cols = []
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508 mls = []
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509 # add the multilinks separately
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510 props = cl.getprops()
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511 for col in values.keys():
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512 prop = props[col]
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513 if isinstance(prop, Multilink):
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514 mls.append(col)
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515 else:
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516 cols.append('_'+col)
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517 cols.sort()
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518
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519 # if there's any updates to regular columns, do them
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520 if cols:
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521 # make sure the ordering is correct for column name -> column value
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522 sqlvals = tuple([values[col[1:]] for col in cols]) + (nodeid,)
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523 s = ','.join(['%s=%s'%(x, self.arg) for x in cols])
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524 cols = ','.join(cols)
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525
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526 # perform the update
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527 sql = 'update _%s set %s where id=%s'%(classname, s, self.arg)
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528 if __debug__:
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529 print >>hyperdb.DEBUG, 'setnode', (self, sql, sqlvals)
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530 self.cursor.execute(sql, sqlvals)
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531
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532 # now the fun bit, updating the multilinks ;)
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533 for col, (add, remove) in multilink_changes.items():
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534 tn = '%s_%s'%(classname, col)
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535 if add:
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536 sql = 'insert into %s (nodeid, linkid) values (%s,%s)'%(tn,
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537 self.arg, self.arg)
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538 for addid in add:
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539 self.sql(sql, (nodeid, addid))
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540 if remove:
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541 sql = 'delete from %s where nodeid=%s and linkid=%s'%(tn,
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542 self.arg, self.arg)
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543 for removeid in remove:
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544 self.sql(sql, (nodeid, removeid))
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545
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546 # make sure we do the commit-time extra stuff for this node
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547 self.transactions.append((self.doSaveNode, (classname, nodeid, values)))
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548
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549 def getnode(self, classname, nodeid):
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550 ''' Get a node from the database.
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551 '''
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552 if __debug__:
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553 print >>hyperdb.DEBUG, 'getnode', (self, classname, nodeid)
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554
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555 # see if we have this node cached
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556 key = (classname, nodeid)
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557 if self.cache.has_key(key):
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558 # push us back to the top of the LRU
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559 self.cache_lru.remove(key)
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560 self.cache_lru.insert(0, key)
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561 # return the cached information
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562 return self.cache[key]
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563
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564 # figure the columns we're fetching
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565 cl = self.classes[classname]
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566 cols, mls = self.determine_columns(cl.properties.items())
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567 scols = ','.join(cols)
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568
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569 # perform the basic property fetch
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570 sql = 'select %s from _%s where id=%s'%(scols, classname, self.arg)
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571 self.sql(sql, (nodeid,))
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diff changeset
572
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573 values = self.sql_fetchone()
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diff changeset
574 if values is None:
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575 raise IndexError, 'no such %s node %s'%(classname, nodeid)
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diff changeset
576
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diff changeset
577 # make up the node
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diff changeset
578 node = {}
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diff changeset
579 for col in range(len(cols)):
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580 node[cols[col][1:]] = values[col]
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diff changeset
581
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diff changeset
582 # now the multilinks
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diff changeset
583 for col in mls:
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diff changeset
584 # get the link ids
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diff changeset
585 sql = 'select linkid from %s_%s where nodeid=%s'%(classname, col,
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diff changeset
586 self.arg)
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diff changeset
587 self.cursor.execute(sql, (nodeid,))
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diff changeset
588 # extract the first column from the result
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589 node[col] = [x[0] for x in self.cursor.fetchall()]
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diff changeset
590
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diff changeset
591 # un-dbificate the node data
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diff changeset
592 node = self.unserialise(classname, node)
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diff changeset
593
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diff changeset
594 # save off in the cache
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diff changeset
595 key = (classname, nodeid)
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diff changeset
596 self.cache[key] = node
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diff changeset
597 # update the LRU
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diff changeset
598 self.cache_lru.insert(0, key)
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599 if len(self.cache_lru) > ROW_CACHE_SIZE:
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diff changeset
600 del self.cache[self.cache_lru.pop()]
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diff changeset
601
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602 return node
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diff changeset
603
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diff changeset
604 def destroynode(self, classname, nodeid):
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diff changeset
605 '''Remove a node from the database. Called exclusively by the
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606 destroy() method on Class.
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diff changeset
607 '''
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diff changeset
608 if __debug__:
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609 print >>hyperdb.DEBUG, 'destroynode', (self, classname, nodeid)
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diff changeset
610
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diff changeset
611 # make sure the node exists
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diff changeset
612 if not self.hasnode(classname, nodeid):
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diff changeset
613 raise IndexError, '%s has no node %s'%(classname, nodeid)
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parents:
diff changeset
614
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parents:
diff changeset
615 # see if we have this node cached
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diff changeset
616 if self.cache.has_key((classname, nodeid)):
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diff changeset
617 del self.cache[(classname, nodeid)]
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diff changeset
618
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parents:
diff changeset
619 # see if there's any obvious commit actions that we should get rid of
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diff changeset
620 for entry in self.transactions[:]:
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diff changeset
621 if entry[1][:2] == (classname, nodeid):
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diff changeset
622 self.transactions.remove(entry)
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diff changeset
623
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diff changeset
624 # now do the SQL
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diff changeset
625 sql = 'delete from _%s where id=%s'%(classname, self.arg)
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diff changeset
626 self.sql(sql, (nodeid,))
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diff changeset
627
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diff changeset
628 # remove from multilnks
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diff changeset
629 cl = self.getclass(classname)
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diff changeset
630 x, mls = self.determine_columns(cl.properties.items())
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diff changeset
631 for col in mls:
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diff changeset
632 # get the link ids
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diff changeset
633 sql = 'delete from %s_%s where nodeid=%s'%(classname, col, self.arg)
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diff changeset
634 self.cursor.execute(sql, (nodeid,))
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diff changeset
635
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diff changeset
636 # remove journal entries
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diff changeset
637 sql = 'delete from %s__journal where nodeid=%s'%(classname, self.arg)
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diff changeset
638 self.sql(sql, (nodeid,))
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diff changeset
639
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diff changeset
640 def serialise(self, classname, node):
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641 '''Copy the node contents, converting non-marshallable data into
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diff changeset
642 marshallable data.
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diff changeset
643 '''
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diff changeset
644 if __debug__:
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645 print >>hyperdb.DEBUG, 'serialise', classname, node
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diff changeset
646 properties = self.getclass(classname).getprops()
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647 d = {}
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648 for k, v in node.items():
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diff changeset
649 # if the property doesn't exist, or is the "retired" flag then
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diff changeset
650 # it won't be in the properties dict
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diff changeset
651 if not properties.has_key(k):
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652 d[k] = v
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diff changeset
653 continue
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diff changeset
654
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diff changeset
655 # get the property spec
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656 prop = properties[k]
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diff changeset
657
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658 if isinstance(prop, Password) and v is not None:
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659 d[k] = str(v)
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diff changeset
660 elif isinstance(prop, Date) and v is not None:
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661 d[k] = v.serialise()
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662 elif isinstance(prop, Interval) and v is not None:
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663 d[k] = v.serialise()
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664 else:
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665 d[k] = v
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666 return d
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667
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668 def unserialise(self, classname, node):
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diff changeset
669 '''Decode the marshalled node data
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diff changeset
670 '''
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671 if __debug__:
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672 print >>hyperdb.DEBUG, 'unserialise', classname, node
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673 properties = self.getclass(classname).getprops()
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674 d = {}
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675 for k, v in node.items():
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676 # if the property doesn't exist, or is the "retired" flag then
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677 # it won't be in the properties dict
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678 if not properties.has_key(k):
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679 d[k] = v
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diff changeset
680 continue
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681
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682 # get the property spec
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683 prop = properties[k]
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684
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685 if isinstance(prop, Date) and v is not None:
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686 d[k] = date.Date(v)
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687 elif isinstance(prop, Interval) and v is not None:
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688 d[k] = date.Interval(v)
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689 elif isinstance(prop, Password) and v is not None:
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690 p = password.Password()
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691 p.unpack(v)
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692 d[k] = p
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693 else:
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694 d[k] = v
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695 return d
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diff changeset
696
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697 def hasnode(self, classname, nodeid):
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698 ''' Determine if the database has a given node.
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699 '''
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700 sql = 'select count(*) from _%s where id=%s'%(classname, self.arg)
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701 if __debug__:
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702 print >>hyperdb.DEBUG, 'hasnode', (self, sql, nodeid)
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703 self.cursor.execute(sql, (nodeid,))
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704 return int(self.cursor.fetchone()[0])
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diff changeset
705
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706 def countnodes(self, classname):
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707 ''' Count the number of nodes that exist for a particular Class.
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708 '''
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709 sql = 'select count(*) from _%s'%classname
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710 if __debug__:
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711 print >>hyperdb.DEBUG, 'countnodes', (self, sql)
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712 self.cursor.execute(sql)
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diff changeset
713 return self.cursor.fetchone()[0]
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
714
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
715 def getnodeids(self, classname, retired=0):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
716 ''' Retrieve all the ids of the nodes for a particular Class.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
717
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
718 Set retired=None to get all nodes. Otherwise it'll get all the
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
719 retired or non-retired nodes, depending on the flag.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
720 '''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
721 # flip the sense of the flag if we don't want all of them
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
722 if retired is not None:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
723 retired = not retired
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
724 sql = 'select id from _%s where __retired__ <> %s'%(classname, self.arg)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
725 if __debug__:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
726 print >>hyperdb.DEBUG, 'getnodeids', (self, sql, retired)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
727 self.cursor.execute(sql, (retired,))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
728 return [x[0] for x in self.cursor.fetchall()]
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
729
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
730 def addjournal(self, classname, nodeid, action, params, creator=None,
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
731 creation=None):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
732 ''' Journal the Action
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
733 'action' may be:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
734
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
735 'create' or 'set' -- 'params' is a dictionary of property values
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
736 'link' or 'unlink' -- 'params' is (classname, nodeid, propname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
737 'retire' -- 'params' is None
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
738 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
739 # serialise the parameters now if necessary
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
740 if isinstance(params, type({})):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
741 if action in ('set', 'create'):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
742 params = self.serialise(classname, params)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
743
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
744 # handle supply of the special journalling parameters (usually
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
745 # supplied on importing an existing database)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
746 if creator:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
747 journaltag = creator
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
748 else:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
749 journaltag = self.curuserid
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
750 if creation:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
751 journaldate = creation.serialise()
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
752 else:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
753 journaldate = date.Date().serialise()
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
754
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
755 # create the journal entry
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
756 cols = ','.join('nodeid date tag action params'.split())
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
757
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
758 if __debug__:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
759 print >>hyperdb.DEBUG, 'addjournal', (nodeid, journaldate,
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
760 journaltag, action, params)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
761
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
762 self.save_journal(classname, cols, nodeid, journaldate,
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
763 journaltag, action, params)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
764
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
765 def save_journal(self, classname, cols, nodeid, journaldate,
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
766 journaltag, action, params):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
767 ''' Save the journal entry to the database
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
768 '''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
769 raise NotImplemented
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
770
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
771 def getjournal(self, classname, nodeid):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
772 ''' get the journal for id
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
773 '''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
774 # make sure the node exists
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
775 if not self.hasnode(classname, nodeid):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
776 raise IndexError, '%s has no node %s'%(classname, nodeid)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
777
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
778 cols = ','.join('nodeid date tag action params'.split())
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
779 return self.load_journal(classname, cols, nodeid)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
780
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
781 def load_journal(self, classname, cols, nodeid):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
782 ''' Load the journal from the database
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
783 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
784 raise NotImplemented
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
785
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
786 def pack(self, pack_before):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
787 ''' Delete all journal entries except "create" before 'pack_before'.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
788 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
789 # get a 'yyyymmddhhmmss' version of the date
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parents:
diff changeset
790 date_stamp = pack_before.serialise()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
791
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
792 # do the delete
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
793 for classname in self.classes.keys():
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
794 sql = "delete from %s__journal where date<%s and "\
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
795 "action<>'create'"%(classname, self.arg)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
796 if __debug__:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
797 print >>hyperdb.DEBUG, 'pack', (self, sql, date_stamp)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
798 self.cursor.execute(sql, (date_stamp,))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
799
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
800 def sql_commit(self):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
801 ''' Actually commit to the database.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
802 '''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
803 self.conn.commit()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
804
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
805 def commit(self):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
806 ''' Commit the current transactions.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
807
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
808 Save all data changed since the database was opened or since the
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
809 last commit() or rollback().
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
810 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
811 if __debug__:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
812 print >>hyperdb.DEBUG, 'commit', (self,)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
813
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
814 # commit the database
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
815 self.sql_commit()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
816
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
817 # now, do all the other transaction stuff
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
818 reindex = {}
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
819 for method, args in self.transactions:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
820 reindex[method(*args)] = 1
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
821
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
822 # reindex the nodes that request it
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
823 for classname, nodeid in filter(None, reindex.keys()):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
824 print >>hyperdb.DEBUG, 'commit.reindex', (classname, nodeid)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
825 self.getclass(classname).index(nodeid)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
826
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
827 # save the indexer state
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
828 self.indexer.save_index()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
829
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
830 # clear out the transactions
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
831 self.transactions = []
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
832
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
833 def rollback(self):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
834 ''' Reverse all actions from the current transaction.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
835
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
836 Undo all the changes made since the database was opened or the last
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
837 commit() or rollback() was performed.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
838 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
839 if __debug__:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
840 print >>hyperdb.DEBUG, 'rollback', (self,)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
841
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
842 # roll back
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
843 self.conn.rollback()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
844
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
845 # roll back "other" transaction stuff
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
846 for method, args in self.transactions:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
847 # delete temporary files
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
848 if method == self.doStoreFile:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
849 self.rollbackStoreFile(*args)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
850 self.transactions = []
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
851
1491
393ab6e36540 fixed sqlite rollback/caching bug [SF#689383]
Richard Jones <richard@users.sourceforge.net>
parents: 1481
diff changeset
852 # clear the cache
393ab6e36540 fixed sqlite rollback/caching bug [SF#689383]
Richard Jones <richard@users.sourceforge.net>
parents: 1481
diff changeset
853 self.clearCache()
393ab6e36540 fixed sqlite rollback/caching bug [SF#689383]
Richard Jones <richard@users.sourceforge.net>
parents: 1481
diff changeset
854
1356
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
855 def doSaveNode(self, classname, nodeid, node):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
856 ''' dummy that just generates a reindex event
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parents:
diff changeset
857 '''
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diff changeset
858 # return the classname, nodeid so we reindex this content
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parents:
diff changeset
859 return (classname, nodeid)
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parents:
diff changeset
860
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diff changeset
861 def close(self):
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diff changeset
862 ''' Close off the connection.
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parents:
diff changeset
863 '''
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parents:
diff changeset
864 self.conn.close()
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parents:
diff changeset
865 if self.lockfile is not None:
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parents:
diff changeset
866 locking.release_lock(self.lockfile)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
867 if self.lockfile is not None:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
868 self.lockfile.close()
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parents:
diff changeset
869 self.lockfile = None
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parents:
diff changeset
870
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parents:
diff changeset
871 #
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parents:
diff changeset
872 # The base Class class
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diff changeset
873 #
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
874 class Class(hyperdb.Class):
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diff changeset
875 ''' The handle to a particular class of nodes in a hyperdatabase.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
876
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
877 All methods except __repr__ and getnode must be implemented by a
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
878 concrete backend Class.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
879 '''
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parents:
diff changeset
880
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
881 def __init__(self, db, classname, **properties):
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parents:
diff changeset
882 '''Create a new class with a given name and property specification.
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parents:
diff changeset
883
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parents:
diff changeset
884 'classname' must not collide with the name of an existing class,
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parents:
diff changeset
885 or a ValueError is raised. The keyword arguments in 'properties'
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parents:
diff changeset
886 must map names to property objects, or a TypeError is raised.
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parents:
diff changeset
887 '''
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parents:
diff changeset
888 if (properties.has_key('creation') or properties.has_key('activity')
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parents:
diff changeset
889 or properties.has_key('creator')):
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parents:
diff changeset
890 raise ValueError, '"creation", "activity" and "creator" are '\
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
891 'reserved'
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parents:
diff changeset
892
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parents:
diff changeset
893 self.classname = classname
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parents:
diff changeset
894 self.properties = properties
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parents:
diff changeset
895 self.db = weakref.proxy(db) # use a weak ref to avoid circularity
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parents:
diff changeset
896 self.key = ''
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parents:
diff changeset
897
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parents:
diff changeset
898 # should we journal changes (default yes)
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parents:
diff changeset
899 self.do_journal = 1
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parents:
diff changeset
900
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parents:
diff changeset
901 # do the db-related init stuff
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
902 db.addclass(self)
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parents:
diff changeset
903
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parents:
diff changeset
904 self.auditors = {'create': [], 'set': [], 'retire': []}
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parents:
diff changeset
905 self.reactors = {'create': [], 'set': [], 'retire': []}
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parents:
diff changeset
906
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
907 def schema(self):
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parents:
diff changeset
908 ''' A dumpable version of the schema that we can store in the
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
909 database
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
910 '''
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parents:
diff changeset
911 return (self.key, [(x, repr(y)) for x,y in self.properties.items()])
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parents:
diff changeset
912
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parents:
diff changeset
913 def enableJournalling(self):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
914 '''Turn journalling on for this class
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
915 '''
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parents:
diff changeset
916 self.do_journal = 1
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parents:
diff changeset
917
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parents:
diff changeset
918 def disableJournalling(self):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
919 '''Turn journalling off for this class
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
920 '''
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parents:
diff changeset
921 self.do_journal = 0
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parents:
diff changeset
922
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parents:
diff changeset
923 # Editing nodes:
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parents:
diff changeset
924 def create(self, **propvalues):
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diff changeset
925 ''' Create a new node of this class and return its id.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
926
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
927 The keyword arguments in 'propvalues' map property names to values.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
928
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parents:
diff changeset
929 The values of arguments must be acceptable for the types of their
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
930 corresponding properties or a TypeError is raised.
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parents:
diff changeset
931
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parents:
diff changeset
932 If this class has a key property, it must be present and its value
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parents:
diff changeset
933 must not collide with other key strings or a ValueError is raised.
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parents:
diff changeset
934
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parents:
diff changeset
935 Any other properties on this class that are missing from the
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parents:
diff changeset
936 'propvalues' dictionary are set to None.
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parents:
diff changeset
937
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parents:
diff changeset
938 If an id in a link or multilink property does not refer to a valid
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parents:
diff changeset
939 node, an IndexError is raised.
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diff changeset
940 '''
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parents:
diff changeset
941 if propvalues.has_key('id'):
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diff changeset
942 raise KeyError, '"id" is reserved'
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parents:
diff changeset
943
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parents:
diff changeset
944 if self.db.journaltag is None:
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diff changeset
945 raise DatabaseError, 'Database open read-only'
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parents:
diff changeset
946
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parents:
diff changeset
947 if propvalues.has_key('creation') or propvalues.has_key('activity'):
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parents:
diff changeset
948 raise KeyError, '"creation" and "activity" are reserved'
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
949
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parents:
diff changeset
950 self.fireAuditors('create', None, propvalues)
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diff changeset
951
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parents:
diff changeset
952 # new node's id
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diff changeset
953 newid = self.db.newid(self.classname)
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diff changeset
954
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parents:
diff changeset
955 # validate propvalues
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diff changeset
956 num_re = re.compile('^\d+$')
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diff changeset
957 for key, value in propvalues.items():
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parents:
diff changeset
958 if key == self.key:
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diff changeset
959 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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diff changeset
960 self.lookup(value)
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parents:
diff changeset
961 except KeyError:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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diff changeset
962 pass
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diff changeset
963 else:
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964 raise ValueError, 'node with key "%s" exists'%value
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diff changeset
965
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diff changeset
966 # try to handle this property
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diff changeset
967 try:
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diff changeset
968 prop = self.properties[key]
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diff changeset
969 except KeyError:
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970 raise KeyError, '"%s" has no property "%s"'%(self.classname,
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diff changeset
971 key)
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diff changeset
972
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973 if value is not None and isinstance(prop, Link):
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974 if type(value) != type(''):
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diff changeset
975 raise ValueError, 'link value must be String'
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diff changeset
976 link_class = self.properties[key].classname
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diff changeset
977 # if it isn't a number, it's a key
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978 if not num_re.match(value):
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diff changeset
979 try:
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980 value = self.db.classes[link_class].lookup(value)
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981 except (TypeError, KeyError):
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diff changeset
982 raise IndexError, 'new property "%s": %s not a %s'%(
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983 key, value, link_class)
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diff changeset
984 elif not self.db.getclass(link_class).hasnode(value):
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985 raise IndexError, '%s has no node %s'%(link_class, value)
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diff changeset
986
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987 # save off the value
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988 propvalues[key] = value
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diff changeset
989
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diff changeset
990 # register the link with the newly linked node
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diff changeset
991 if self.do_journal and self.properties[key].do_journal:
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992 self.db.addjournal(link_class, value, 'link',
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993 (self.classname, newid, key))
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diff changeset
994
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diff changeset
995 elif isinstance(prop, Multilink):
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diff changeset
996 if type(value) != type([]):
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diff changeset
997 raise TypeError, 'new property "%s" not a list of ids'%key
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diff changeset
998
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diff changeset
999 # clean up and validate the list of links
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parents:
diff changeset
1000 link_class = self.properties[key].classname
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parents:
diff changeset
1001 l = []
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1002 for entry in value:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1003 if type(entry) != type(''):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1004 raise ValueError, '"%s" multilink value (%r) '\
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1005 'must contain Strings'%(key, value)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1006 # if it isn't a number, it's a key
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1007 if not num_re.match(entry):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1008 try:
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parents:
diff changeset
1009 entry = self.db.classes[link_class].lookup(entry)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1010 except (TypeError, KeyError):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1011 raise IndexError, 'new property "%s": %s not a %s'%(
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1012 key, entry, self.properties[key].classname)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1013 l.append(entry)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1014 value = l
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1015 propvalues[key] = value
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1016
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1017 # handle additions
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1018 for nodeid in value:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1019 if not self.db.getclass(link_class).hasnode(nodeid):
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parents:
diff changeset
1020 raise IndexError, '%s has no node %s'%(link_class,
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1021 nodeid)
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parents:
diff changeset
1022 # register the link with the newly linked node
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parents:
diff changeset
1023 if self.do_journal and self.properties[key].do_journal:
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parents:
diff changeset
1024 self.db.addjournal(link_class, nodeid, 'link',
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1025 (self.classname, newid, key))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1026
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parents:
diff changeset
1027 elif isinstance(prop, String):
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parents:
diff changeset
1028 if type(value) != type(''):
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parents:
diff changeset
1029 raise TypeError, 'new property "%s" not a string'%key
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1030
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1031 elif isinstance(prop, Password):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1032 if not isinstance(value, password.Password):
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parents:
diff changeset
1033 raise TypeError, 'new property "%s" not a Password'%key
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parents:
diff changeset
1034
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1035 elif isinstance(prop, Date):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1036 if value is not None and not isinstance(value, date.Date):
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parents:
diff changeset
1037 raise TypeError, 'new property "%s" not a Date'%key
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1038
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parents:
diff changeset
1039 elif isinstance(prop, Interval):
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parents:
diff changeset
1040 if value is not None and not isinstance(value, date.Interval):
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parents:
diff changeset
1041 raise TypeError, 'new property "%s" not an Interval'%key
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parents:
diff changeset
1042
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parents:
diff changeset
1043 elif value is not None and isinstance(prop, Number):
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parents:
diff changeset
1044 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1045 float(value)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1046 except ValueError:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1047 raise TypeError, 'new property "%s" not numeric'%key
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1048
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parents:
diff changeset
1049 elif value is not None and isinstance(prop, Boolean):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1050 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1051 int(value)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1052 except ValueError:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1053 raise TypeError, 'new property "%s" not boolean'%key
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parents:
diff changeset
1054
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parents:
diff changeset
1055 # make sure there's data where there needs to be
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1056 for key, prop in self.properties.items():
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1057 if propvalues.has_key(key):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1058 continue
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1059 if key == self.key:
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parents:
diff changeset
1060 raise ValueError, 'key property "%s" is required'%key
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parents:
diff changeset
1061 if isinstance(prop, Multilink):
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parents:
diff changeset
1062 propvalues[key] = []
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parents:
diff changeset
1063 else:
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parents:
diff changeset
1064 propvalues[key] = None
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parents:
diff changeset
1065
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parents:
diff changeset
1066 # done
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parents:
diff changeset
1067 self.db.addnode(self.classname, newid, propvalues)
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parents:
diff changeset
1068 if self.do_journal:
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parents:
diff changeset
1069 self.db.addjournal(self.classname, newid, 'create', {})
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parents:
diff changeset
1070
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parents:
diff changeset
1071 self.fireReactors('create', newid, None)
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parents:
diff changeset
1072
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parents:
diff changeset
1073 return newid
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parents:
diff changeset
1074
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parents:
diff changeset
1075 def export_list(self, propnames, nodeid):
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parents:
diff changeset
1076 ''' Export a node - generate a list of CSV-able data in the order
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parents:
diff changeset
1077 specified by propnames for the given node.
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parents:
diff changeset
1078 '''
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parents:
diff changeset
1079 properties = self.getprops()
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parents:
diff changeset
1080 l = []
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parents:
diff changeset
1081 for prop in propnames:
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diff changeset
1082 proptype = properties[prop]
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diff changeset
1083 value = self.get(nodeid, prop)
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parents:
diff changeset
1084 # "marshal" data where needed
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parents:
diff changeset
1085 if value is None:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1086 pass
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parents:
diff changeset
1087 elif isinstance(proptype, hyperdb.Date):
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parents:
diff changeset
1088 value = value.get_tuple()
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parents:
diff changeset
1089 elif isinstance(proptype, hyperdb.Interval):
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parents:
diff changeset
1090 value = value.get_tuple()
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parents:
diff changeset
1091 elif isinstance(proptype, hyperdb.Password):
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parents:
diff changeset
1092 value = str(value)
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parents:
diff changeset
1093 l.append(repr(value))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1094 return l
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parents:
diff changeset
1095
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parents:
diff changeset
1096 def import_list(self, propnames, proplist):
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parents:
diff changeset
1097 ''' Import a node - all information including "id" is present and
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parents:
diff changeset
1098 should not be sanity checked. Triggers are not triggered. The
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parents:
diff changeset
1099 journal should be initialised using the "creator" and "created"
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parents:
diff changeset
1100 information.
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parents:
diff changeset
1101
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parents:
diff changeset
1102 Return the nodeid of the node imported.
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diff changeset
1103 '''
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diff changeset
1104 if self.db.journaltag is None:
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diff changeset
1105 raise DatabaseError, 'Database open read-only'
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parents:
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1106 properties = self.getprops()
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diff changeset
1107
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1108 # make the new node's property map
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1109 d = {}
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1110 for i in range(len(propnames)):
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diff changeset
1111 # Use eval to reverse the repr() used to output the CSV
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1112 value = eval(proplist[i])
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diff changeset
1113
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diff changeset
1114 # Figure the property for this column
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diff changeset
1115 propname = propnames[i]
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parents:
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1116 prop = properties[propname]
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parents:
diff changeset
1117
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parents:
diff changeset
1118 # "unmarshal" where necessary
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parents:
diff changeset
1119 if propname == 'id':
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parents:
diff changeset
1120 newid = value
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diff changeset
1121 continue
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parents:
diff changeset
1122 elif value is None:
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diff changeset
1123 # don't set Nones
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1124 continue
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1125 elif isinstance(prop, hyperdb.Date):
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1126 value = date.Date(value)
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1127 elif isinstance(prop, hyperdb.Interval):
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1128 value = date.Interval(value)
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1129 elif isinstance(prop, hyperdb.Password):
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1130 pwd = password.Password()
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parents:
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1131 pwd.unpack(value)
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parents:
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1132 value = pwd
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parents:
diff changeset
1133 d[propname] = value
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parents:
diff changeset
1134
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parents:
diff changeset
1135 # add the node and journal
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diff changeset
1136 self.db.addnode(self.classname, newid, d)
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parents:
diff changeset
1137
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diff changeset
1138 # extract the extraneous journalling gumpf and nuke it
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parents:
diff changeset
1139 if d.has_key('creator'):
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diff changeset
1140 creator = d['creator']
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parents:
diff changeset
1141 del d['creator']
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parents:
diff changeset
1142 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1143 creator = None
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1144 if d.has_key('creation'):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1145 creation = d['creation']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1146 del d['creation']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1147 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1148 creation = None
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1149 if d.has_key('activity'):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1150 del d['activity']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1151 self.db.addjournal(self.classname, newid, 'create', {}, creator,
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1152 creation)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1153 return newid
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1154
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1155 _marker = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1156 def get(self, nodeid, propname, default=_marker, cache=1):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1157 '''Get the value of a property on an existing node of this class.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1158
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1159 'nodeid' must be the id of an existing node of this class or an
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1160 IndexError is raised. 'propname' must be the name of a property
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1161 of this class or a KeyError is raised.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1162
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1163 'cache' indicates whether the transaction cache should be queried
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1164 for the node. If the node has been modified and you need to
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1165 determine what its values prior to modification are, you need to
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1166 set cache=0.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1167 '''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1168 if propname == 'id':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1169 return nodeid
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1170
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1171 # get the node's dict
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1172 d = self.db.getnode(self.classname, nodeid)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1173
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1174 if propname == 'creation':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1175 if d.has_key('creation'):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1176 return d['creation']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1177 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1178 return date.Date()
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1179 if propname == 'activity':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1180 if d.has_key('activity'):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1181 return d['activity']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1182 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1183 return date.Date()
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1184 if propname == 'creator':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1185 if d.has_key('creator'):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1186 return d['creator']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1187 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1188 return self.db.curuserid
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1189
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1190 # get the property (raises KeyErorr if invalid)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1191 prop = self.properties[propname]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1192
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1193 if not d.has_key(propname):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1194 if default is self._marker:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1195 if isinstance(prop, Multilink):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1196 return []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1197 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1198 return None
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1199 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1200 return default
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1201
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1202 # don't pass our list to other code
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1203 if isinstance(prop, Multilink):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1204 return d[propname][:]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1205
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1206 return d[propname]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1207
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1208 def getnode(self, nodeid, cache=1):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1209 ''' Return a convenience wrapper for the node.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1210
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1211 'nodeid' must be the id of an existing node of this class or an
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1212 IndexError is raised.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1213
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1214 'cache' indicates whether the transaction cache should be queried
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1215 for the node. If the node has been modified and you need to
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1216 determine what its values prior to modification are, you need to
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1217 set cache=0.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1218 '''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1219 return Node(self, nodeid, cache=cache)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1220
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1221 def set(self, nodeid, **propvalues):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1222 '''Modify a property on an existing node of this class.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1223
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1224 'nodeid' must be the id of an existing node of this class or an
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1225 IndexError is raised.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1226
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1227 Each key in 'propvalues' must be the name of a property of this
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1228 class or a KeyError is raised.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1229
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1230 All values in 'propvalues' must be acceptable types for their
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1231 corresponding properties or a TypeError is raised.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1232
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1233 If the value of the key property is set, it must not collide with
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1234 other key strings or a ValueError is raised.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1235
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1236 If the value of a Link or Multilink property contains an invalid
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1237 node id, a ValueError is raised.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1238 '''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1239 if not propvalues:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1240 return propvalues
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1241
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1242 if propvalues.has_key('creation') or propvalues.has_key('activity'):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1243 raise KeyError, '"creation" and "activity" are reserved'
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1244
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1245 if propvalues.has_key('id'):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1246 raise KeyError, '"id" is reserved'
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1247
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1248 if self.db.journaltag is None:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1249 raise DatabaseError, 'Database open read-only'
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1250
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1251 self.fireAuditors('set', nodeid, propvalues)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1252 # Take a copy of the node dict so that the subsequent set
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1253 # operation doesn't modify the oldvalues structure.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1254 # XXX used to try the cache here first
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1255 oldvalues = copy.deepcopy(self.db.getnode(self.classname, nodeid))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1256
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1257 node = self.db.getnode(self.classname, nodeid)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1258 if self.is_retired(nodeid):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1259 raise IndexError, 'Requested item is retired'
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1260 num_re = re.compile('^\d+$')
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1261
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1262 # if the journal value is to be different, store it in here
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1263 journalvalues = {}
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1264
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1265 # remember the add/remove stuff for multilinks, making it easier
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1266 # for the Database layer to do its stuff
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1267 multilink_changes = {}
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1268
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1269 for propname, value in propvalues.items():
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1270 # check to make sure we're not duplicating an existing key
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1271 if propname == self.key and node[propname] != value:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1272 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1273 self.lookup(value)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1274 except KeyError:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1275 pass
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1276 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1277 raise ValueError, 'node with key "%s" exists'%value
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1278
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1279 # this will raise the KeyError if the property isn't valid
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1280 # ... we don't use getprops() here because we only care about
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1281 # the writeable properties.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1282 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1283 prop = self.properties[propname]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1284 except KeyError:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1285 raise KeyError, '"%s" has no property named "%s"'%(
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1286 self.classname, propname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1287
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1288 # if the value's the same as the existing value, no sense in
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1289 # doing anything
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1290 current = node.get(propname, None)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1291 if value == current:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1292 del propvalues[propname]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1293 continue
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1294 journalvalues[propname] = current
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1295
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1296 # do stuff based on the prop type
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1297 if isinstance(prop, Link):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1298 link_class = prop.classname
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1299 # if it isn't a number, it's a key
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1300 if value is not None and not isinstance(value, type('')):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1301 raise ValueError, 'property "%s" link value be a string'%(
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1302 propname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1303 if isinstance(value, type('')) and not num_re.match(value):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1304 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1305 value = self.db.classes[link_class].lookup(value)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1306 except (TypeError, KeyError):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1307 raise IndexError, 'new property "%s": %s not a %s'%(
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1308 propname, value, prop.classname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1309
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1310 if (value is not None and
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1311 not self.db.getclass(link_class).hasnode(value)):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1312 raise IndexError, '%s has no node %s'%(link_class, value)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1313
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1314 if self.do_journal and prop.do_journal:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1315 # register the unlink with the old linked node
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1316 if node[propname] is not None:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1317 self.db.addjournal(link_class, node[propname], 'unlink',
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1318 (self.classname, nodeid, propname))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1319
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1320 # register the link with the newly linked node
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1321 if value is not None:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1322 self.db.addjournal(link_class, value, 'link',
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1323 (self.classname, nodeid, propname))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1324
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1325 elif isinstance(prop, Multilink):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1326 if type(value) != type([]):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1327 raise TypeError, 'new property "%s" not a list of'\
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1328 ' ids'%propname
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1329 link_class = self.properties[propname].classname
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1330 l = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1331 for entry in value:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1332 # if it isn't a number, it's a key
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1333 if type(entry) != type(''):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1334 raise ValueError, 'new property "%s" link value ' \
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1335 'must be a string'%propname
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1336 if not num_re.match(entry):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1337 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1338 entry = self.db.classes[link_class].lookup(entry)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1339 except (TypeError, KeyError):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1340 raise IndexError, 'new property "%s": %s not a %s'%(
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1341 propname, entry,
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1342 self.properties[propname].classname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1343 l.append(entry)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1344 value = l
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1345 propvalues[propname] = value
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1346
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1347 # figure the journal entry for this property
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1348 add = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1349 remove = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1350
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1351 # handle removals
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1352 if node.has_key(propname):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1353 l = node[propname]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1354 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1355 l = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1356 for id in l[:]:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1357 if id in value:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1358 continue
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1359 # register the unlink with the old linked node
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1360 if self.do_journal and self.properties[propname].do_journal:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1361 self.db.addjournal(link_class, id, 'unlink',
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1362 (self.classname, nodeid, propname))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1363 l.remove(id)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1364 remove.append(id)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1365
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1366 # handle additions
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1367 for id in value:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1368 if not self.db.getclass(link_class).hasnode(id):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1369 raise IndexError, '%s has no node %s'%(link_class, id)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1370 if id in l:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1371 continue
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1372 # register the link with the newly linked node
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1373 if self.do_journal and self.properties[propname].do_journal:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1374 self.db.addjournal(link_class, id, 'link',
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1375 (self.classname, nodeid, propname))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1376 l.append(id)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1377 add.append(id)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1378
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1379 # figure the journal entry
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1380 l = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1381 if add:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1382 l.append(('+', add))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1383 if remove:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1384 l.append(('-', remove))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1385 multilink_changes[propname] = (add, remove)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1386 if l:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1387 journalvalues[propname] = tuple(l)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1388
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1389 elif isinstance(prop, String):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1390 if value is not None and type(value) != type(''):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1391 raise TypeError, 'new property "%s" not a string'%propname
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1392
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1393 elif isinstance(prop, Password):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1394 if not isinstance(value, password.Password):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1395 raise TypeError, 'new property "%s" not a Password'%propname
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1396 propvalues[propname] = value
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1397
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1398 elif value is not None and isinstance(prop, Date):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1399 if not isinstance(value, date.Date):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1400 raise TypeError, 'new property "%s" not a Date'% propname
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1401 propvalues[propname] = value
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1402
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1403 elif value is not None and isinstance(prop, Interval):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1404 if not isinstance(value, date.Interval):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1405 raise TypeError, 'new property "%s" not an '\
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1406 'Interval'%propname
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1407 propvalues[propname] = value
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1408
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1409 elif value is not None and isinstance(prop, Number):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1410 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1411 float(value)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1412 except ValueError:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1413 raise TypeError, 'new property "%s" not numeric'%propname
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1414
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1415 elif value is not None and isinstance(prop, Boolean):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1416 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1417 int(value)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1418 except ValueError:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1419 raise TypeError, 'new property "%s" not boolean'%propname
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1420
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1421 # nothing to do?
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1422 if not propvalues:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1423 return propvalues
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1424
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1425 # do the set, and journal it
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1426 self.db.setnode(self.classname, nodeid, propvalues, multilink_changes)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1427
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1428 if self.do_journal:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1429 self.db.addjournal(self.classname, nodeid, 'set', journalvalues)
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parents:
diff changeset
1430
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1431 self.fireReactors('set', nodeid, oldvalues)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1432
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1433 return propvalues
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1434
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1435 def retire(self, nodeid):
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parents:
diff changeset
1436 '''Retire a node.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1437
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1438 The properties on the node remain available from the get() method,
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1439 and the node's id is never reused.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1440
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parents:
diff changeset
1441 Retired nodes are not returned by the find(), list(), or lookup()
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parents:
diff changeset
1442 methods, and other nodes may reuse the values of their key properties.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1443 '''
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parents:
diff changeset
1444 if self.db.journaltag is None:
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parents:
diff changeset
1445 raise DatabaseError, 'Database open read-only'
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parents:
diff changeset
1446
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parents:
diff changeset
1447 self.fireAuditors('retire', nodeid, None)
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parents:
diff changeset
1448
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parents:
diff changeset
1449 # use the arg for __retired__ to cope with any odd database type
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parents:
diff changeset
1450 # conversion (hello, sqlite)
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parents:
diff changeset
1451 sql = 'update _%s set __retired__=%s where id=%s'%(self.classname,
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parents:
diff changeset
1452 self.db.arg, self.db.arg)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1453 if __debug__:
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parents:
diff changeset
1454 print >>hyperdb.DEBUG, 'retire', (self, sql, nodeid)
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parents:
diff changeset
1455 self.db.cursor.execute(sql, (1, nodeid))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1456
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1457 self.fireReactors('retire', nodeid, None)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1458
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1459 def is_retired(self, nodeid):
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parents:
diff changeset
1460 '''Return true if the node is rerired
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1461 '''
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parents:
diff changeset
1462 sql = 'select __retired__ from _%s where id=%s'%(self.classname,
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1463 self.db.arg)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1464 if __debug__:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1465 print >>hyperdb.DEBUG, 'is_retired', (self, sql, nodeid)
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parents:
diff changeset
1466 self.db.cursor.execute(sql, (nodeid,))
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parents:
diff changeset
1467 return int(self.db.sql_fetchone()[0])
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parents:
diff changeset
1468
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parents:
diff changeset
1469 def destroy(self, nodeid):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1470 '''Destroy a node.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1471
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1472 WARNING: this method should never be used except in extremely rare
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1473 situations where there could never be links to the node being
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1474 deleted
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1475 WARNING: use retire() instead
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1476 WARNING: the properties of this node will not be available ever again
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1477 WARNING: really, use retire() instead
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1478
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1479 Well, I think that's enough warnings. This method exists mostly to
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1480 support the session storage of the cgi interface.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1481
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1482 The node is completely removed from the hyperdb, including all journal
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1483 entries. It will no longer be available, and will generally break code
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parents:
diff changeset
1484 if there are any references to the node.
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parents:
diff changeset
1485 '''
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parents:
diff changeset
1486 if self.db.journaltag is None:
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parents:
diff changeset
1487 raise DatabaseError, 'Database open read-only'
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parents:
diff changeset
1488 self.db.destroynode(self.classname, nodeid)
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parents:
diff changeset
1489
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1490 def history(self, nodeid):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1491 '''Retrieve the journal of edits on a particular node.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1492
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1493 'nodeid' must be the id of an existing node of this class or an
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parents:
diff changeset
1494 IndexError is raised.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1495
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1496 The returned list contains tuples of the form
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parents:
diff changeset
1497
1410
3a853f1c20b5 backporting fixes from HEAD
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parents: 1366
diff changeset
1498 (nodeid, date, tag, action, params)
1356
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parents:
diff changeset
1499
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1500 'date' is a Timestamp object specifying the time of the change and
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1501 'tag' is the journaltag specified when the database was opened.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1502 '''
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parents:
diff changeset
1503 if not self.do_journal:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1504 raise ValueError, 'Journalling is disabled for this class'
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parents:
diff changeset
1505 return self.db.getjournal(self.classname, nodeid)
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parents:
diff changeset
1506
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1507 # Locating nodes:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1508 def hasnode(self, nodeid):
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parents:
diff changeset
1509 '''Determine if the given nodeid actually exists
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1510 '''
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parents:
diff changeset
1511 return self.db.hasnode(self.classname, nodeid)
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parents:
diff changeset
1512
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1513 def setkey(self, propname):
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parents:
diff changeset
1514 '''Select a String property of this class to be the key property.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1515
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parents:
diff changeset
1516 'propname' must be the name of a String property of this class or
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diff changeset
1517 None, or a TypeError is raised. The values of the key property on
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parents:
diff changeset
1518 all existing nodes must be unique or a ValueError is raised.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1519 '''
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parents:
diff changeset
1520 # XXX create an index on the key prop column
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parents:
diff changeset
1521 prop = self.getprops()[propname]
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parents:
diff changeset
1522 if not isinstance(prop, String):
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parents:
diff changeset
1523 raise TypeError, 'key properties must be String'
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1524 self.key = propname
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1525
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1526 def getkey(self):
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parents:
diff changeset
1527 '''Return the name of the key property for this class or None.'''
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parents:
diff changeset
1528 return self.key
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parents:
diff changeset
1529
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parents:
diff changeset
1530 def labelprop(self, default_to_id=0):
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parents:
diff changeset
1531 ''' Return the property name for a label for the given node.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1532
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parents:
diff changeset
1533 This method attempts to generate a consistent label for the node.
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parents:
diff changeset
1534 It tries the following in order:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1535 1. key property
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parents:
diff changeset
1536 2. "name" property
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parents:
diff changeset
1537 3. "title" property
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parents:
diff changeset
1538 4. first property from the sorted property name list
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1539 '''
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parents:
diff changeset
1540 k = self.getkey()
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parents:
diff changeset
1541 if k:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1542 return k
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diff changeset
1543 props = self.getprops()
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parents:
diff changeset
1544 if props.has_key('name'):
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diff changeset
1545 return 'name'
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parents:
diff changeset
1546 elif props.has_key('title'):
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diff changeset
1547 return 'title'
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parents:
diff changeset
1548 if default_to_id:
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parents:
diff changeset
1549 return 'id'
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parents:
diff changeset
1550 props = props.keys()
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parents:
diff changeset
1551 props.sort()
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parents:
diff changeset
1552 return props[0]
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parents:
diff changeset
1553
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parents:
diff changeset
1554 def lookup(self, keyvalue):
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parents:
diff changeset
1555 '''Locate a particular node by its key property and return its id.
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parents:
diff changeset
1556
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parents:
diff changeset
1557 If this class has no key property, a TypeError is raised. If the
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parents:
diff changeset
1558 'keyvalue' matches one of the values for the key property among
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parents:
diff changeset
1559 the nodes in this class, the matching node's id is returned;
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diff changeset
1560 otherwise a KeyError is raised.
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parents:
diff changeset
1561 '''
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parents:
diff changeset
1562 if not self.key:
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parents:
diff changeset
1563 raise TypeError, 'No key property set for class %s'%self.classname
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parents:
diff changeset
1564
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parents:
diff changeset
1565 # use the arg to handle any odd database type conversion (hello,
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1566 # sqlite)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1567 sql = "select id from _%s where _%s=%s and __retired__ <> %s"%(
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parents:
diff changeset
1568 self.classname, self.key, self.db.arg, self.db.arg)
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parents:
diff changeset
1569 self.db.sql(sql, (keyvalue, 1))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1570
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1571 # see if there was a result that's not retired
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1572 row = self.db.sql_fetchone()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1573 if not row:
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parents:
diff changeset
1574 raise KeyError, 'No key (%s) value "%s" for "%s"'%(self.key,
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1575 keyvalue, self.classname)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1576
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1577 # return the id
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1578 return row[0]
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1579
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1580 def find(self, **propspec):
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parents:
diff changeset
1581 '''Get the ids of nodes in this class which link to the given nodes.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1582
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1583 'propspec' consists of keyword args propname=nodeid or
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1584 propname={nodeid:1, }
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parents:
diff changeset
1585 'propname' must be the name of a property in this class, or a
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1586 KeyError is raised. That property must be a Link or Multilink
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1587 property, or a TypeError is raised.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1588
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1589 Any node in this class whose 'propname' property links to any of the
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parents:
diff changeset
1590 nodeids will be returned. Used by the full text indexing, which knows
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1591 that "foo" occurs in msg1, msg3 and file7, so we have hits on these
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1592 issues:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1593
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parents:
diff changeset
1594 db.issue.find(messages={'1':1,'3':1}, files={'7':1})
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1595 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1596 if __debug__:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1597 print >>hyperdb.DEBUG, 'find', (self, propspec)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1598
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1599 # shortcut
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1600 if not propspec:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1601 return []
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parents:
diff changeset
1602
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parents:
diff changeset
1603 # validate the args
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parents:
diff changeset
1604 props = self.getprops()
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parents:
diff changeset
1605 propspec = propspec.items()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1606 for propname, nodeids in propspec:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1607 # check the prop is OK
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1608 prop = props[propname]
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parents:
diff changeset
1609 if not isinstance(prop, Link) and not isinstance(prop, Multilink):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1610 raise TypeError, "'%s' not a Link/Multilink property"%propname
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1611
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1612 # first, links
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parents:
diff changeset
1613 where = []
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1614 allvalues = ()
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parents:
diff changeset
1615 a = self.db.arg
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1616 for prop, values in propspec:
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parents:
diff changeset
1617 if not isinstance(props[prop], hyperdb.Link):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1618 continue
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parents:
diff changeset
1619 if type(values) is type(''):
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parents:
diff changeset
1620 allvalues += (values,)
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parents:
diff changeset
1621 where.append('_%s = %s'%(prop, a))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1622 else:
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parents:
diff changeset
1623 allvalues += tuple(values.keys())
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parents:
diff changeset
1624 where.append('_%s in (%s)'%(prop, ','.join([a]*len(values))))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1625 tables = []
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1626 if where:
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parents:
diff changeset
1627 tables.append('select id as nodeid from _%s where %s'%(
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1628 self.classname, ' and '.join(where)))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1629
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1630 # now multilinks
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parents:
diff changeset
1631 for prop, values in propspec:
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parents:
diff changeset
1632 if not isinstance(props[prop], hyperdb.Multilink):
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diff changeset
1633 continue
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parents:
diff changeset
1634 if type(values) is type(''):
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parents:
diff changeset
1635 allvalues += (values,)
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parents:
diff changeset
1636 s = a
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1637 else:
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diff changeset
1638 allvalues += tuple(values.keys())
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parents:
diff changeset
1639 s = ','.join([a]*len(values))
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
1640 tables.append('select nodeid from %s_%s where linkid in (%s)'%(
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diff changeset
1641 self.classname, prop, s))
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diff changeset
1642 sql = '\nunion\n'.join(tables)
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parents:
diff changeset
1643 self.db.sql(sql, allvalues)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1644 l = [x[0] for x in self.db.sql_fetchall()]
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1645 if __debug__:
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parents:
diff changeset
1646 print >>hyperdb.DEBUG, 'find ... ', l
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1647 return l
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1648
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parents:
diff changeset
1649 def stringFind(self, **requirements):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1650 '''Locate a particular node by matching a set of its String
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1651 properties in a caseless search.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1652
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parents:
diff changeset
1653 If the property is not a String property, a TypeError is raised.
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parents:
diff changeset
1654
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parents:
diff changeset
1655 The return is a list of the id of all nodes that match.
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parents:
diff changeset
1656 '''
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parents:
diff changeset
1657 where = []
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1658 args = []
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parents:
diff changeset
1659 for propname in requirements.keys():
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parents:
diff changeset
1660 prop = self.properties[propname]
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diff changeset
1661 if isinstance(not prop, String):
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diff changeset
1662 raise TypeError, "'%s' not a String property"%propname
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diff changeset
1663 where.append(propname)
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diff changeset
1664 args.append(requirements[propname].lower())
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diff changeset
1665
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diff changeset
1666 # generate the where clause
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diff changeset
1667 s = ' and '.join(['_%s=%s'%(col, self.db.arg) for col in where])
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diff changeset
1668 sql = 'select id from _%s where %s'%(self.classname, s)
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diff changeset
1669 self.db.sql(sql, tuple(args))
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diff changeset
1670 l = [x[0] for x in self.db.sql_fetchall()]
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parents:
diff changeset
1671 if __debug__:
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parents:
diff changeset
1672 print >>hyperdb.DEBUG, 'find ... ', l
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1673 return l
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1674
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diff changeset
1675 def list(self):
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diff changeset
1676 ''' Return a list of the ids of the active nodes in this class.
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diff changeset
1677 '''
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diff changeset
1678 return self.db.getnodeids(self.classname, retired=0)
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diff changeset
1679
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diff changeset
1680 def filter(self, search_matches, filterspec, sort=(None,None),
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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diff changeset
1681 group=(None,None)):
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diff changeset
1682 ''' Return a list of the ids of the active nodes in this class that
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diff changeset
1683 match the 'filter' spec, sorted by the group spec and then the
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diff changeset
1684 sort spec
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diff changeset
1685
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diff changeset
1686 "filterspec" is {propname: value(s)}
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diff changeset
1687 "sort" and "group" are (dir, prop) where dir is '+', '-' or None
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diff changeset
1688 and prop is a prop name or None
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diff changeset
1689 "search_matches" is {nodeid: marker}
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diff changeset
1690
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diff changeset
1691 The filter must match all properties specificed - but if the
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diff changeset
1692 property value to match is a list, any one of the values in the
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diff changeset
1693 list may match for that property to match.
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diff changeset
1694 '''
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diff changeset
1695 # just don't bother if the full-text search matched diddly
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diff changeset
1696 if search_matches == {}:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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diff changeset
1697 return []
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parents:
diff changeset
1698
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diff changeset
1699 cn = self.classname
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diff changeset
1700
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diff changeset
1701 # figure the WHERE clause from the filterspec
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diff changeset
1702 props = self.getprops()
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parents:
diff changeset
1703 frum = ['_'+cn]
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diff changeset
1704 where = []
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diff changeset
1705 args = []
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diff changeset
1706 a = self.db.arg
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1707 for k, v in filterspec.items():
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1708 propclass = props[k]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1709 # now do other where clause stuff
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1710 if isinstance(propclass, Multilink):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1711 tn = '%s_%s'%(cn, k)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1712 frum.append(tn)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1713 if isinstance(v, type([])):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1714 s = ','.join([a for x in v])
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1715 where.append('id=%s.nodeid and %s.linkid in (%s)'%(tn,tn,s))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1716 args = args + v
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1717 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1718 where.append('id=%s.nodeid and %s.linkid = %s'%(tn, tn, a))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1719 args.append(v)
1366
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1720 elif k == 'id':
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1721 if isinstance(v, type([])):
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1722 s = ','.join([a for x in v])
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1723 where.append('%s in (%s)'%(k, s))
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1724 args = args + v
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1725 else:
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1726 where.append('%s=%s'%(k, a))
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1727 args.append(v)
1356
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1728 elif isinstance(propclass, String):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1729 if not isinstance(v, type([])):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1730 v = [v]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1731
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1732 # Quote the bits in the string that need it and then embed
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1733 # in a "substring" search. Note - need to quote the '%' so
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1734 # they make it through the python layer happily
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1735 v = ['%%'+self.db.sql_stringquote(s)+'%%' for s in v]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1736
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1737 # now add to the where clause
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1738 where.append(' or '.join(["_%s LIKE '%s'"%(k, s) for s in v]))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1739 # note: args are embedded in the query string now
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1740 elif isinstance(propclass, Link):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1741 if isinstance(v, type([])):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1742 if '-1' in v:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1743 v.remove('-1')
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1744 xtra = ' or _%s is NULL'%k
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1745 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1746 xtra = ''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1747 if v:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1748 s = ','.join([a for x in v])
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1749 where.append('(_%s in (%s)%s)'%(k, s, xtra))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1750 args = args + v
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1751 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1752 where.append('_%s is NULL'%k)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1753 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1754 if v == '-1':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1755 v = None
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1756 where.append('_%s is NULL'%k)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1757 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1758 where.append('_%s=%s'%(k, a))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1759 args.append(v)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1760 elif isinstance(propclass, Date):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1761 if isinstance(v, type([])):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1762 s = ','.join([a for x in v])
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1763 where.append('_%s in (%s)'%(k, s))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1764 args = args + [date.Date(x).serialise() for x in v]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1765 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1766 where.append('_%s=%s'%(k, a))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1767 args.append(date.Date(v).serialise())
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1768 elif isinstance(propclass, Interval):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1769 if isinstance(v, type([])):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1770 s = ','.join([a for x in v])
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1771 where.append('_%s in (%s)'%(k, s))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1772 args = args + [date.Interval(x).serialise() for x in v]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1773 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1774 where.append('_%s=%s'%(k, a))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1775 args.append(date.Interval(v).serialise())
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1776 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1777 if isinstance(v, type([])):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1778 s = ','.join([a for x in v])
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1779 where.append('_%s in (%s)'%(k, s))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1780 args = args + v
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1781 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1782 where.append('_%s=%s'%(k, a))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1783 args.append(v)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1784
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1785 # add results of full text search
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1786 if search_matches is not None:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1787 v = search_matches.keys()
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1788 s = ','.join([a for x in v])
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1789 where.append('id in (%s)'%s)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1790 args = args + v
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1791
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1792 # "grouping" is just the first-order sorting in the SQL fetch
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1793 # can modify it...)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1794 orderby = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1795 ordercols = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1796 if group[0] is not None and group[1] is not None:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1797 if group[0] != '-':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1798 orderby.append('_'+group[1])
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1799 ordercols.append('_'+group[1])
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1800 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1801 orderby.append('_'+group[1]+' desc')
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1802 ordercols.append('_'+group[1])
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1803
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1804 # now add in the sorting
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1805 group = ''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1806 if sort[0] is not None and sort[1] is not None:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1807 direction, colname = sort
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1808 if direction != '-':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1809 if colname == 'id':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1810 orderby.append(colname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1811 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1812 orderby.append('_'+colname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1813 ordercols.append('_'+colname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1814 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1815 if colname == 'id':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1816 orderby.append(colname+' desc')
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1817 ordercols.append(colname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1818 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1819 orderby.append('_'+colname+' desc')
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1820 ordercols.append('_'+colname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1821
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1822 # construct the SQL
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1823 frum = ','.join(frum)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1824 if where:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1825 where = ' where ' + (' and '.join(where))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1826 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1827 where = ''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1828 cols = ['id']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1829 if orderby:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1830 cols = cols + ordercols
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1831 order = ' order by %s'%(','.join(orderby))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1832 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1833 order = ''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1834 cols = ','.join(cols)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1835 sql = 'select %s from %s %s%s%s'%(cols, frum, where, group, order)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1836 args = tuple(args)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1837 if __debug__:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1838 print >>hyperdb.DEBUG, 'filter', (self, sql, args)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1839 self.db.cursor.execute(sql, args)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1840 l = self.db.cursor.fetchall()
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1841
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1842 # return the IDs (the first column)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1843 # XXX The filter(None, l) bit is sqlite-specific... if there's _NO_
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1844 # XXX matches to a fetch, it returns NULL instead of nothing!?!
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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diff changeset
1845 return filter(None, [row[0] for row in l])
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1846
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1847 def count(self):
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diff changeset
1848 '''Get the number of nodes in this class.
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diff changeset
1849
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1850 If the returned integer is 'numnodes', the ids of all the nodes
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1851 in this class run from 1 to numnodes, and numnodes+1 will be the
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diff changeset
1852 id of the next node to be created in this class.
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parents:
diff changeset
1853 '''
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1854 return self.db.countnodes(self.classname)
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diff changeset
1855
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diff changeset
1856 # Manipulating properties:
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1857 def getprops(self, protected=1):
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diff changeset
1858 '''Return a dictionary mapping property names to property objects.
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diff changeset
1859 If the "protected" flag is true, we include protected properties -
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diff changeset
1860 those which may not be modified.
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diff changeset
1861 '''
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1862 d = self.properties.copy()
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diff changeset
1863 if protected:
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1864 d['id'] = String()
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diff changeset
1865 d['creation'] = hyperdb.Date()
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diff changeset
1866 d['activity'] = hyperdb.Date()
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diff changeset
1867 d['creator'] = hyperdb.Link('user')
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diff changeset
1868 return d
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1869
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1870 def addprop(self, **properties):
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diff changeset
1871 '''Add properties to this class.
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1872
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1873 The keyword arguments in 'properties' must map names to property
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1874 objects, or a TypeError is raised. None of the keys in 'properties'
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1875 may collide with the names of existing properties, or a ValueError
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1876 is raised before any properties have been added.
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1877 '''
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1878 for key in properties.keys():
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1879 if self.properties.has_key(key):
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1880 raise ValueError, key
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1881 self.properties.update(properties)
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1882
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1883 def index(self, nodeid):
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diff changeset
1884 '''Add (or refresh) the node to search indexes
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1885 '''
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1886 # find all the String properties that have indexme
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1887 for prop, propclass in self.getprops().items():
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1888 if isinstance(propclass, String) and propclass.indexme:
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1889 try:
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1890 value = str(self.get(nodeid, prop))
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1891 except IndexError:
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diff changeset
1892 # node no longer exists - entry should be removed
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1893 self.db.indexer.purge_entry((self.classname, nodeid, prop))
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1894 else:
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1895 # and index them under (classname, nodeid, property)
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1896 self.db.indexer.add_text((self.classname, nodeid, prop),
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1897 value)
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1898
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1899
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1900 #
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1901 # Detector interface
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diff changeset
1902 #
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1903 def audit(self, event, detector):
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1904 '''Register a detector
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1905 '''
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1906 l = self.auditors[event]
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1907 if detector not in l:
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1908 self.auditors[event].append(detector)
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1909
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1910 def fireAuditors(self, action, nodeid, newvalues):
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1911 '''Fire all registered auditors.
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1912 '''
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1913 for audit in self.auditors[action]:
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1914 audit(self.db, self, nodeid, newvalues)
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1915
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1916 def react(self, event, detector):
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1917 '''Register a detector
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1918 '''
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1919 l = self.reactors[event]
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1920 if detector not in l:
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1921 self.reactors[event].append(detector)
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1922
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1923 def fireReactors(self, action, nodeid, oldvalues):
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1924 '''Fire all registered reactors.
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1925 '''
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1926 for react in self.reactors[action]:
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1927 react(self.db, self, nodeid, oldvalues)
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1928
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1929 class FileClass(Class):
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1930 '''This class defines a large chunk of data. To support this, it has a
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1931 mandatory String property "content" which is typically saved off
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1932 externally to the hyperdb.
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1933
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1934 The default MIME type of this data is defined by the
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1935 "default_mime_type" class attribute, which may be overridden by each
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1936 node if the class defines a "type" String property.
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1937 '''
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1938 default_mime_type = 'text/plain'
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1939
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1940 def create(self, **propvalues):
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1941 ''' snaffle the file propvalue and store in a file
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1942 '''
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1943 content = propvalues['content']
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1944 del propvalues['content']
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1945 newid = Class.create(self, **propvalues)
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1946 self.db.storefile(self.classname, newid, None, content)
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1947 return newid
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1948
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1949 def import_list(self, propnames, proplist):
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1950 ''' Trap the "content" property...
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1951 '''
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1952 # dupe this list so we don't affect others
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1953 propnames = propnames[:]
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1954
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1955 # extract the "content" property from the proplist
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1956 i = propnames.index('content')
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1957 content = eval(proplist[i])
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1958 del propnames[i]
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1959 del proplist[i]
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1960
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1961 # do the normal import
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1962 newid = Class.import_list(self, propnames, proplist)
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1963
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1964 # save off the "content" file
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1965 self.db.storefile(self.classname, newid, None, content)
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1966 return newid
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1967
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1968 _marker = []
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1969 def get(self, nodeid, propname, default=_marker, cache=1):
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1970 ''' trap the content propname and get it from the file
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1971 '''
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1972
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1973 poss_msg = 'Possibly a access right configuration problem.'
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1974 if propname == 'content':
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1975 try:
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1976 return self.db.getfile(self.classname, nodeid, None)
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1977 except IOError, (strerror):
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1978 # BUG: by catching this we donot see an error in the log.
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1979 return 'ERROR reading file: %s%s\n%s\n%s'%(
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1980 self.classname, nodeid, poss_msg, strerror)
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1981 if default is not self._marker:
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1982 return Class.get(self, nodeid, propname, default, cache=cache)
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1983 else:
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1984 return Class.get(self, nodeid, propname, cache=cache)
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1985
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1986 def getprops(self, protected=1):
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1987 ''' In addition to the actual properties on the node, these methods
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1988 provide the "content" property. If the "protected" flag is true,
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1989 we include protected properties - those which may not be
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1990 modified.
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1991 '''
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1992 d = Class.getprops(self, protected=protected).copy()
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1993 d['content'] = hyperdb.String()
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1994 return d
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1995
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1996 def index(self, nodeid):
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1997 ''' Index the node in the search index.
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1998
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1999 We want to index the content in addition to the normal String
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2000 property indexing.
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2001 '''
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2002 # perform normal indexing
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2003 Class.index(self, nodeid)
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2004
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2005 # get the content to index
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2006 content = self.get(nodeid, 'content')
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2007
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2008 # figure the mime type
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2009 if self.properties.has_key('type'):
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2010 mime_type = self.get(nodeid, 'type')
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2011 else:
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2012 mime_type = self.default_mime_type
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2013
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2014 # and index!
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2015 self.db.indexer.add_text((self.classname, nodeid, 'content'), content,
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2016 mime_type)
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2017
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2018 # XXX deviation from spec - was called ItemClass
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2019 class IssueClass(Class, roundupdb.IssueClass):
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2020 # Overridden methods:
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2021 def __init__(self, db, classname, **properties):
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2022 '''The newly-created class automatically includes the "messages",
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2023 "files", "nosy", and "superseder" properties. If the 'properties'
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2024 dictionary attempts to specify any of these properties or a
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2025 "creation" or "activity" property, a ValueError is raised.
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2026 '''
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2027 if not properties.has_key('title'):
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2028 properties['title'] = hyperdb.String(indexme='yes')
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2029 if not properties.has_key('messages'):
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2030 properties['messages'] = hyperdb.Multilink("msg")
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2031 if not properties.has_key('files'):
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2032 properties['files'] = hyperdb.Multilink("file")
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2033 if not properties.has_key('nosy'):
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2034 # note: journalling is turned off as it really just wastes
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2035 # space. this behaviour may be overridden in an instance
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2036 properties['nosy'] = hyperdb.Multilink("user", do_journal="no")
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2037 if not properties.has_key('superseder'):
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2038 properties['superseder'] = hyperdb.Multilink(classname)
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2039 Class.__init__(self, db, classname, **properties)
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2040
Roundup Issue Tracker: http://roundup-tracker.org/