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annotate roundup/backends/rdbms_common.py @ 1516:c8a596aa5aba maint-0.5

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fixed rdbms table update detection logic [SF#703297]
author Richard Jones <richard@users.sourceforge.net>
date Fri, 14 Mar 2003 02:52:03 +0000
parents 8fd1ad93f920
children 905f92b97d4e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1516
c8a596aa5aba fixed rdbms table update detection logic [SF#703297]
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parents: 1501
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1 # $Id: rdbms_common.py,v 1.27.2.7 2003-03-14 02:52:03 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 new_spec[1].sort()
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189 old_spec[1].sort()
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190 if new_spec == old_spec:
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191 # no changes
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192 return 0
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193
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194 if __debug__:
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195 print >>hyperdb.DEBUG, 'update_class FIRING'
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196
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197 # key property changed?
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198 if old_spec[0] != new_spec[0]:
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199 if __debug__:
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200 print >>hyperdb.DEBUG, 'update_class setting keyprop', `spec[0]`
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201 # XXX turn on indexing for the key property
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202
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203 # detect multilinks that have been removed, and drop their table
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204 old_has = {}
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205 for name,prop in old_spec[1]:
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206 old_has[name] = 1
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207 if not new_has(name) and isinstance(prop, Multilink):
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208 # it's a multilink, and it's been removed - drop the old
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209 # table
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210 sql = 'drop table %s_%s'%(spec.classname, prop)
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211 if __debug__:
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212 print >>hyperdb.DEBUG, 'update_class', (self, sql)
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213 self.cursor.execute(sql)
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214 continue
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215 old_has = old_has.has_key
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216
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217 # now figure how we populate the new table
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218 fetch = ['_activity', '_creation', '_creator']
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219 properties = spec.getprops()
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220 for propname,x in new_spec[1]:
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221 prop = properties[propname]
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222 if isinstance(prop, Multilink):
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223 if not old_has(propname):
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224 # we need to create the new table
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225 self.create_multilink_table(spec, propname)
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226 elif old_has(propname):
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227 # we copy this col over from the old table
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228 fetch.append('_'+propname)
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229
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230 # select the data out of the old table
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231 fetch.append('id')
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232 fetch.append('__retired__')
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233 fetchcols = ','.join(fetch)
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234 cn = spec.classname
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235 sql = 'select %s from _%s'%(fetchcols, cn)
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236 if __debug__:
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237 print >>hyperdb.DEBUG, 'update_class', (self, sql)
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238 self.cursor.execute(sql)
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239 olddata = self.cursor.fetchall()
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240
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241 # drop the old table
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242 self.cursor.execute('drop table _%s'%cn)
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243
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244 # create the new table
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245 self.create_class_table(spec)
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246
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247 if olddata:
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248 # do the insert
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249 args = ','.join([self.arg for x in fetch])
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250 sql = 'insert into _%s (%s) values (%s)'%(cn, fetchcols, args)
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251 if __debug__:
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252 print >>hyperdb.DEBUG, 'update_class', (self, sql, olddata[0])
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253 for entry in olddata:
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254 self.cursor.execute(sql, *entry)
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255
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256 return 1
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257
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258 def create_class_table(self, spec):
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259 ''' create the class table for the given spec
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260 '''
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261 cols, mls = self.determine_columns(spec.properties.items())
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262
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263 # add on our special columns
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264 cols.append('id')
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265 cols.append('__retired__')
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266
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267 # create the base table
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268 scols = ','.join(['%s varchar'%x for x in cols])
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269 sql = 'create table _%s (%s)'%(spec.classname, scols)
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270 if __debug__:
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271 print >>hyperdb.DEBUG, 'create_class', (self, sql)
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272 self.cursor.execute(sql)
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273
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274 return cols, mls
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275
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276 def create_journal_table(self, spec):
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277 ''' create the journal table for a class given the spec and
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278 already-determined cols
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279 '''
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280 # journal table
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281 cols = ','.join(['%s varchar'%x
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282 for x in 'nodeid date tag action params'.split()])
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283 sql = 'create table %s__journal (%s)'%(spec.classname, cols)
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284 if __debug__:
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285 print >>hyperdb.DEBUG, 'create_class', (self, sql)
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286 self.cursor.execute(sql)
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287
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288 def create_multilink_table(self, spec, ml):
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289 ''' Create a multilink table for the "ml" property of the class
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290 given by the spec
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291 '''
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292 sql = 'create table %s_%s (linkid varchar, nodeid varchar)'%(
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293 spec.classname, ml)
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294 if __debug__:
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295 print >>hyperdb.DEBUG, 'create_class', (self, sql)
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296 self.cursor.execute(sql)
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297
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298 def create_class(self, spec):
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299 ''' Create a database table according to the given spec.
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300 '''
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301 cols, mls = self.create_class_table(spec)
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302 self.create_journal_table(spec)
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303
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304 # now create the multilink tables
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305 for ml in mls:
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306 self.create_multilink_table(spec, ml)
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307
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308 # ID counter
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309 sql = 'insert into ids (name, num) values (%s,%s)'%(self.arg, self.arg)
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310 vals = (spec.classname, 1)
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311 if __debug__:
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312 print >>hyperdb.DEBUG, 'create_class', (self, sql, vals)
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313 self.cursor.execute(sql, vals)
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314
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315 def drop_class(self, spec):
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316 ''' Drop the given table from the database.
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317
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318 Drop the journal and multilink tables too.
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319 '''
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320 # figure the multilinks
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321 mls = []
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322 for col, prop in spec.properties.items():
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323 if isinstance(prop, Multilink):
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324 mls.append(col)
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325
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326 sql = 'drop table _%s'%spec.classname
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327 if __debug__:
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328 print >>hyperdb.DEBUG, 'drop_class', (self, sql)
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329 self.cursor.execute(sql)
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330
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331 sql = 'drop table %s__journal'%spec.classname
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332 if __debug__:
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333 print >>hyperdb.DEBUG, 'drop_class', (self, sql)
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334 self.cursor.execute(sql)
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335
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336 for ml in mls:
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337 sql = 'drop table %s_%s'%(spec.classname, ml)
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338 if __debug__:
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339 print >>hyperdb.DEBUG, 'drop_class', (self, sql)
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340 self.cursor.execute(sql)
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341
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342 #
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343 # Classes
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344 #
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345 def __getattr__(self, classname):
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346 ''' A convenient way of calling self.getclass(classname).
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347 '''
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348 if self.classes.has_key(classname):
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349 if __debug__:
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350 print >>hyperdb.DEBUG, '__getattr__', (self, classname)
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351 return self.classes[classname]
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352 raise AttributeError, classname
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353
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354 def addclass(self, cl):
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355 ''' Add a Class to the hyperdatabase.
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356 '''
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357 if __debug__:
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358 print >>hyperdb.DEBUG, 'addclass', (self, cl)
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359 cn = cl.classname
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360 if self.classes.has_key(cn):
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361 raise ValueError, cn
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362 self.classes[cn] = cl
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363
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364 def getclasses(self):
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365 ''' Return a list of the names of all existing classes.
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366 '''
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367 if __debug__:
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368 print >>hyperdb.DEBUG, 'getclasses', (self,)
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369 l = self.classes.keys()
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370 l.sort()
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371 return l
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372
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373 def getclass(self, classname):
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374 '''Get the Class object representing a particular class.
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375
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376 If 'classname' is not a valid class name, a KeyError is raised.
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377 '''
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378 if __debug__:
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379 print >>hyperdb.DEBUG, 'getclass', (self, classname)
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380 try:
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381 return self.classes[classname]
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382 except KeyError:
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383 raise KeyError, 'There is no class called "%s"'%classname
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384
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385 def clear(self):
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386 ''' Delete all database contents.
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387
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388 Note: I don't commit here, which is different behaviour to the
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389 "nuke from orbit" behaviour in the *dbms.
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390 '''
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391 if __debug__:
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392 print >>hyperdb.DEBUG, 'clear', (self,)
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393 for cn in self.classes.keys():
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394 sql = 'delete from _%s'%cn
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395 if __debug__:
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396 print >>hyperdb.DEBUG, 'clear', (self, sql)
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397 self.cursor.execute(sql)
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398
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399 #
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400 # Node IDs
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401 #
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402 def newid(self, classname):
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403 ''' Generate a new id for the given class
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404 '''
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405 # get the next ID
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406 sql = 'select num from ids where name=%s'%self.arg
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407 if __debug__:
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408 print >>hyperdb.DEBUG, 'newid', (self, sql, classname)
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409 self.cursor.execute(sql, (classname, ))
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410 newid = self.cursor.fetchone()[0]
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411
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412 # update the counter
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413 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg)
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414 vals = (int(newid)+1, classname)
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415 if __debug__:
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416 print >>hyperdb.DEBUG, 'newid', (self, sql, vals)
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417 self.cursor.execute(sql, vals)
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418
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419 # return as string
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420 return str(newid)
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421
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422 def setid(self, classname, setid):
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423 ''' Set the id counter: used during import of database
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424 '''
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425 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg)
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426 vals = (setid, classname)
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427 if __debug__:
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428 print >>hyperdb.DEBUG, 'setid', (self, sql, vals)
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429 self.cursor.execute(sql, vals)
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430
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431 #
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432 # Nodes
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diff changeset
433 #
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434
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435 def addnode(self, classname, nodeid, node):
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436 ''' Add the specified node to its class's db.
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437 '''
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438 if __debug__:
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439 print >>hyperdb.DEBUG, 'addnode', (self, classname, nodeid, node)
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440 # gadfly requires values for all non-multilink columns
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441 cl = self.classes[classname]
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442 cols, mls = self.determine_columns(cl.properties.items())
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443
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diff changeset
444 # we'll be supplied these props if we're doing an import
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445 if not node.has_key('creator'):
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446 # add in the "calculated" properties (dupe so we don't affect
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diff changeset
447 # calling code's node assumptions)
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448 node = node.copy()
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449 node['creation'] = node['activity'] = date.Date()
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450 node['creator'] = self.curuserid
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451
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452 # default the non-multilink columns
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453 for col, prop in cl.properties.items():
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454 if not isinstance(col, Multilink):
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455 if not node.has_key(col):
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456 node[col] = None
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diff changeset
457
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diff changeset
458 # clear this node out of the cache if it's in there
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459 key = (classname, nodeid)
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460 if self.cache.has_key(key):
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461 del self.cache[key]
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462 self.cache_lru.remove(key)
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463
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464 # make the node data safe for the DB
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465 node = self.serialise(classname, node)
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466
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467 # make sure the ordering is correct for column name -> column value
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468 vals = tuple([node[col[1:]] for col in cols]) + (nodeid, 0)
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469 s = ','.join([self.arg for x in cols]) + ',%s,%s'%(self.arg, self.arg)
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470 cols = ','.join(cols) + ',id,__retired__'
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471
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472 # perform the inserts
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473 sql = 'insert into _%s (%s) values (%s)'%(classname, cols, s)
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474 if __debug__:
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475 print >>hyperdb.DEBUG, 'addnode', (self, sql, vals)
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476 self.cursor.execute(sql, vals)
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477
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478 # insert the multilink rows
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479 for col in mls:
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480 t = '%s_%s'%(classname, col)
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481 for entry in node[col]:
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482 sql = 'insert into %s (linkid, nodeid) values (%s,%s)'%(t,
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483 self.arg, self.arg)
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484 self.sql(sql, (entry, nodeid))
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485
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486 # make sure we do the commit-time extra stuff for this node
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487 self.transactions.append((self.doSaveNode, (classname, nodeid, node)))
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488
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489 def setnode(self, classname, nodeid, values, multilink_changes):
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490 ''' Change the specified node.
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491 '''
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492 if __debug__:
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493 print >>hyperdb.DEBUG, 'setnode', (self, classname, nodeid, values)
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494
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495 # clear this node out of the cache if it's in there
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496 key = (classname, nodeid)
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497 if self.cache.has_key(key):
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498 del self.cache[key]
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499 self.cache_lru.remove(key)
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500
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501 # add the special props
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502 values = values.copy()
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503 values['activity'] = date.Date()
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504
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505 # make db-friendly
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506 values = self.serialise(classname, values)
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507
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508 cl = self.classes[classname]
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509 cols = []
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510 mls = []
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511 # add the multilinks separately
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512 props = cl.getprops()
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513 for col in values.keys():
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514 prop = props[col]
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515 if isinstance(prop, Multilink):
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516 mls.append(col)
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517 else:
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518 cols.append('_'+col)
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519 cols.sort()
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520
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521 # if there's any updates to regular columns, do them
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522 if cols:
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523 # make sure the ordering is correct for column name -> column value
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524 sqlvals = tuple([values[col[1:]] for col in cols]) + (nodeid,)
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525 s = ','.join(['%s=%s'%(x, self.arg) for x in cols])
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526 cols = ','.join(cols)
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527
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528 # perform the update
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529 sql = 'update _%s set %s where id=%s'%(classname, s, self.arg)
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530 if __debug__:
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531 print >>hyperdb.DEBUG, 'setnode', (self, sql, sqlvals)
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532 self.cursor.execute(sql, sqlvals)
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533
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534 # now the fun bit, updating the multilinks ;)
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535 for col, (add, remove) in multilink_changes.items():
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536 tn = '%s_%s'%(classname, col)
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537 if add:
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538 sql = 'insert into %s (nodeid, linkid) values (%s,%s)'%(tn,
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539 self.arg, self.arg)
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540 for addid in add:
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541 self.sql(sql, (nodeid, addid))
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542 if remove:
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543 sql = 'delete from %s where nodeid=%s and linkid=%s'%(tn,
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544 self.arg, self.arg)
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545 for removeid in remove:
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546 self.sql(sql, (nodeid, removeid))
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547
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548 # make sure we do the commit-time extra stuff for this node
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549 self.transactions.append((self.doSaveNode, (classname, nodeid, values)))
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550
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551 def getnode(self, classname, nodeid):
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552 ''' Get a node from the database.
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553 '''
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554 if __debug__:
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555 print >>hyperdb.DEBUG, 'getnode', (self, classname, nodeid)
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556
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557 # see if we have this node cached
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558 key = (classname, nodeid)
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559 if self.cache.has_key(key):
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560 # push us back to the top of the LRU
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561 self.cache_lru.remove(key)
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562 self.cache_lru.insert(0, key)
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563 # return the cached information
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564 return self.cache[key]
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565
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566 # figure the columns we're fetching
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567 cl = self.classes[classname]
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568 cols, mls = self.determine_columns(cl.properties.items())
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569 scols = ','.join(cols)
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570
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diff changeset
571 # perform the basic property fetch
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diff changeset
572 sql = 'select %s from _%s where id=%s'%(scols, classname, self.arg)
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diff changeset
573 self.sql(sql, (nodeid,))
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diff changeset
574
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diff changeset
575 values = self.sql_fetchone()
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diff changeset
576 if values is None:
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577 raise IndexError, 'no such %s node %s'%(classname, nodeid)
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diff changeset
578
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diff changeset
579 # make up the node
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diff changeset
580 node = {}
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diff changeset
581 for col in range(len(cols)):
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diff changeset
582 node[cols[col][1:]] = values[col]
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diff changeset
583
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diff changeset
584 # now the multilinks
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diff changeset
585 for col in mls:
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diff changeset
586 # get the link ids
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diff changeset
587 sql = 'select linkid from %s_%s where nodeid=%s'%(classname, col,
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diff changeset
588 self.arg)
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diff changeset
589 self.cursor.execute(sql, (nodeid,))
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diff changeset
590 # extract the first column from the result
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diff changeset
591 node[col] = [x[0] for x in self.cursor.fetchall()]
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diff changeset
592
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diff changeset
593 # un-dbificate the node data
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diff changeset
594 node = self.unserialise(classname, node)
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diff changeset
595
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diff changeset
596 # save off in the cache
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597 key = (classname, nodeid)
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598 self.cache[key] = node
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diff changeset
599 # update the LRU
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diff changeset
600 self.cache_lru.insert(0, key)
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601 if len(self.cache_lru) > ROW_CACHE_SIZE:
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diff changeset
602 del self.cache[self.cache_lru.pop()]
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diff changeset
603
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604 return node
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diff changeset
605
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diff changeset
606 def destroynode(self, classname, nodeid):
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diff changeset
607 '''Remove a node from the database. Called exclusively by the
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diff changeset
608 destroy() method on Class.
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diff changeset
609 '''
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diff changeset
610 if __debug__:
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611 print >>hyperdb.DEBUG, 'destroynode', (self, classname, nodeid)
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diff changeset
612
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parents:
diff changeset
613 # make sure the node exists
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diff changeset
614 if not self.hasnode(classname, nodeid):
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diff changeset
615 raise IndexError, '%s has no node %s'%(classname, nodeid)
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diff changeset
616
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parents:
diff changeset
617 # see if we have this node cached
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diff changeset
618 if self.cache.has_key((classname, nodeid)):
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diff changeset
619 del self.cache[(classname, nodeid)]
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parents:
diff changeset
620
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parents:
diff changeset
621 # see if there's any obvious commit actions that we should get rid of
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parents:
diff changeset
622 for entry in self.transactions[:]:
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diff changeset
623 if entry[1][:2] == (classname, nodeid):
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diff changeset
624 self.transactions.remove(entry)
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diff changeset
625
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diff changeset
626 # now do the SQL
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diff changeset
627 sql = 'delete from _%s where id=%s'%(classname, self.arg)
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628 self.sql(sql, (nodeid,))
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diff changeset
629
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diff changeset
630 # remove from multilnks
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diff changeset
631 cl = self.getclass(classname)
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632 x, mls = self.determine_columns(cl.properties.items())
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diff changeset
633 for col in mls:
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diff changeset
634 # get the link ids
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diff changeset
635 sql = 'delete from %s_%s where nodeid=%s'%(classname, col, self.arg)
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diff changeset
636 self.cursor.execute(sql, (nodeid,))
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diff changeset
637
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diff changeset
638 # remove journal entries
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639 sql = 'delete from %s__journal where nodeid=%s'%(classname, self.arg)
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640 self.sql(sql, (nodeid,))
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diff changeset
641
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642 def serialise(self, classname, node):
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643 '''Copy the node contents, converting non-marshallable data into
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diff changeset
644 marshallable data.
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diff changeset
645 '''
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646 if __debug__:
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647 print >>hyperdb.DEBUG, 'serialise', classname, node
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648 properties = self.getclass(classname).getprops()
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649 d = {}
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650 for k, v in node.items():
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651 # if the property doesn't exist, or is the "retired" flag then
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652 # it won't be in the properties dict
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653 if not properties.has_key(k):
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654 d[k] = v
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diff changeset
655 continue
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parents:
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656
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657 # get the property spec
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658 prop = properties[k]
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659
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660 if isinstance(prop, Password) and v is not None:
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661 d[k] = str(v)
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662 elif isinstance(prop, Date) and v is not None:
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663 d[k] = v.serialise()
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664 elif isinstance(prop, Interval) and v is not None:
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665 d[k] = v.serialise()
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666 else:
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667 d[k] = v
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668 return d
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669
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670 def unserialise(self, classname, node):
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671 '''Decode the marshalled node data
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672 '''
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673 if __debug__:
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674 print >>hyperdb.DEBUG, 'unserialise', classname, node
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675 properties = self.getclass(classname).getprops()
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676 d = {}
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677 for k, v in node.items():
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678 # if the property doesn't exist, or is the "retired" flag then
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679 # it won't be in the properties dict
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680 if not properties.has_key(k):
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681 d[k] = v
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diff changeset
682 continue
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683
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684 # get the property spec
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685 prop = properties[k]
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686
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687 if isinstance(prop, Date) and v is not None:
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688 d[k] = date.Date(v)
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689 elif isinstance(prop, Interval) and v is not None:
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690 d[k] = date.Interval(v)
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691 elif isinstance(prop, Password) and v is not None:
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692 p = password.Password()
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693 p.unpack(v)
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694 d[k] = p
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695 else:
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696 d[k] = v
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697 return d
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diff changeset
698
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699 def hasnode(self, classname, nodeid):
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700 ''' Determine if the database has a given node.
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701 '''
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702 sql = 'select count(*) from _%s where id=%s'%(classname, self.arg)
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703 if __debug__:
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704 print >>hyperdb.DEBUG, 'hasnode', (self, sql, nodeid)
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705 self.cursor.execute(sql, (nodeid,))
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706 return int(self.cursor.fetchone()[0])
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diff changeset
707
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708 def countnodes(self, classname):
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709 ''' Count the number of nodes that exist for a particular Class.
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710 '''
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711 sql = 'select count(*) from _%s'%classname
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diff changeset
712 if __debug__:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
713 print >>hyperdb.DEBUG, 'countnodes', (self, sql)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
714 self.cursor.execute(sql)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
715 return self.cursor.fetchone()[0]
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
716
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
717 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
718 ''' 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
719
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
720 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
721 retired or non-retired nodes, depending on the flag.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
722 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
723 # 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
724 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
725 retired = not retired
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
726 sql = 'select id from _%s where __retired__ <> %s'%(classname, self.arg)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
727 if __debug__:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
728 print >>hyperdb.DEBUG, 'getnodeids', (self, sql, retired)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
729 self.cursor.execute(sql, (retired,))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
730 return [x[0] for x in self.cursor.fetchall()]
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
731
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
732 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
733 creation=None):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
734 ''' Journal the Action
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
735 'action' may be:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
736
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
737 'create' or 'set' -- 'params' is a dictionary of property values
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
738 '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
739 'retire' -- 'params' is None
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
740 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
741 # serialise the parameters now if necessary
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
742 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
743 if action in ('set', 'create'):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
744 params = self.serialise(classname, params)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
745
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
746 # 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
747 # 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
748 if creator:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
749 journaltag = creator
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
750 else:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
751 journaltag = self.curuserid
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
752 if creation:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
753 journaldate = creation.serialise()
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
754 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
755 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
756
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
757 # create the journal entry
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
758 cols = ','.join('nodeid date tag action params'.split())
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
759
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
760 if __debug__:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
761 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
762 journaltag, action, params)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
763
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
764 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
765 journaltag, action, params)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
766
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
767 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
768 journaltag, action, params):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
769 ''' Save the journal entry to the database
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
770 '''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
771 raise NotImplemented
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
772
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
773 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
774 ''' 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
775 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
776 # make sure the node exists
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
777 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
778 raise IndexError, '%s has no node %s'%(classname, nodeid)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
779
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
780 cols = ','.join('nodeid date tag action params'.split())
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
781 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
782
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
783 def load_journal(self, classname, cols, nodeid):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
784 ''' Load the journal from the database
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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 raise NotImplemented
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
787
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
788 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
789 ''' Delete all journal entries except "create" before 'pack_before'.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
790 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
791 # get a 'yyyymmddhhmmss' version of the date
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
792 date_stamp = pack_before.serialise()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
793
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
794 # do the delete
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
795 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
796 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
797 "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
798 if __debug__:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
799 print >>hyperdb.DEBUG, 'pack', (self, sql, date_stamp)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
800 self.cursor.execute(sql, (date_stamp,))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
801
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
802 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
803 ''' Actually commit to the database.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
804 '''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
805 self.conn.commit()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
806
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
807 def commit(self):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
808 ''' Commit the current transactions.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
809
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
810 Save all data changed since the database was opened or since the
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
811 last commit() or rollback().
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
812 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
813 if __debug__:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
814 print >>hyperdb.DEBUG, 'commit', (self,)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
815
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
816 # commit the database
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
817 self.sql_commit()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
818
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
819 # now, do all the other transaction stuff
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
820 reindex = {}
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
821 for method, args in self.transactions:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
822 reindex[method(*args)] = 1
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
823
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
824 # reindex the nodes that request it
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
825 for classname, nodeid in filter(None, reindex.keys()):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
826 print >>hyperdb.DEBUG, 'commit.reindex', (classname, nodeid)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
827 self.getclass(classname).index(nodeid)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
828
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
829 # save the indexer state
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
830 self.indexer.save_index()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
831
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
832 # clear out the transactions
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
833 self.transactions = []
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
834
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
835 def rollback(self):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
836 ''' Reverse all actions from the current transaction.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
837
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
838 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
839 commit() or rollback() was performed.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
840 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
841 if __debug__:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
842 print >>hyperdb.DEBUG, 'rollback', (self,)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
843
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
844 # roll back
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
845 self.conn.rollback()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
846
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
847 # roll back "other" transaction stuff
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
848 for method, args in self.transactions:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
849 # delete temporary files
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
850 if method == self.doStoreFile:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
851 self.rollbackStoreFile(*args)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
852 self.transactions = []
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
853
1491
393ab6e36540 fixed sqlite rollback/caching bug [SF#689383]
Richard Jones <richard@users.sourceforge.net>
parents: 1481
diff changeset
854 # clear the cache
393ab6e36540 fixed sqlite rollback/caching bug [SF#689383]
Richard Jones <richard@users.sourceforge.net>
parents: 1481
diff changeset
855 self.clearCache()
393ab6e36540 fixed sqlite rollback/caching bug [SF#689383]
Richard Jones <richard@users.sourceforge.net>
parents: 1481
diff changeset
856
1356
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diff changeset
857 def doSaveNode(self, classname, nodeid, node):
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parents:
diff changeset
858 ''' dummy that just generates a reindex event
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parents:
diff changeset
859 '''
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parents:
diff changeset
860 # return the classname, nodeid so we reindex this content
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parents:
diff changeset
861 return (classname, nodeid)
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diff changeset
862
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diff changeset
863 def close(self):
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diff changeset
864 ''' Close off the connection.
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parents:
diff changeset
865 '''
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parents:
diff changeset
866 self.conn.close()
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parents:
diff changeset
867 if self.lockfile is not None:
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parents:
diff changeset
868 locking.release_lock(self.lockfile)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
869 if self.lockfile is not None:
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parents:
diff changeset
870 self.lockfile.close()
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parents:
diff changeset
871 self.lockfile = None
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parents:
diff changeset
872
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parents:
diff changeset
873 #
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parents:
diff changeset
874 # The base Class class
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diff changeset
875 #
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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diff changeset
876 class Class(hyperdb.Class):
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diff changeset
877 ''' The handle to a particular class of nodes in a hyperdatabase.
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parents:
diff changeset
878
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
879 All methods except __repr__ and getnode must be implemented by a
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
880 concrete backend Class.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
881 '''
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parents:
diff changeset
882
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parents:
diff changeset
883 def __init__(self, db, classname, **properties):
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parents:
diff changeset
884 '''Create a new class with a given name and property specification.
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parents:
diff changeset
885
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parents:
diff changeset
886 'classname' must not collide with the name of an existing class,
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
887 or a ValueError is raised. The keyword arguments in 'properties'
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parents:
diff changeset
888 must map names to property objects, or a TypeError is raised.
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parents:
diff changeset
889 '''
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parents:
diff changeset
890 if (properties.has_key('creation') or properties.has_key('activity')
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parents:
diff changeset
891 or properties.has_key('creator')):
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parents:
diff changeset
892 raise ValueError, '"creation", "activity" and "creator" are '\
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
893 'reserved'
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
894
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parents:
diff changeset
895 self.classname = classname
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parents:
diff changeset
896 self.properties = properties
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parents:
diff changeset
897 self.db = weakref.proxy(db) # use a weak ref to avoid circularity
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parents:
diff changeset
898 self.key = ''
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parents:
diff changeset
899
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parents:
diff changeset
900 # should we journal changes (default yes)
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parents:
diff changeset
901 self.do_journal = 1
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
902
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parents:
diff changeset
903 # do the db-related init stuff
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parents:
diff changeset
904 db.addclass(self)
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parents:
diff changeset
905
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parents:
diff changeset
906 self.auditors = {'create': [], 'set': [], 'retire': []}
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parents:
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907 self.reactors = {'create': [], 'set': [], 'retire': []}
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parents:
diff changeset
908
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parents:
diff changeset
909 def schema(self):
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parents:
diff changeset
910 ''' 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
911 database
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parents:
diff changeset
912 '''
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parents:
diff changeset
913 return (self.key, [(x, repr(y)) for x,y in self.properties.items()])
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diff changeset
914
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parents:
diff changeset
915 def enableJournalling(self):
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parents:
diff changeset
916 '''Turn journalling on for this class
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parents:
diff changeset
917 '''
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parents:
diff changeset
918 self.do_journal = 1
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parents:
diff changeset
919
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parents:
diff changeset
920 def disableJournalling(self):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
921 '''Turn journalling off for this class
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parents:
diff changeset
922 '''
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diff changeset
923 self.do_journal = 0
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parents:
diff changeset
924
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diff changeset
925 # Editing nodes:
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diff changeset
926 def create(self, **propvalues):
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diff changeset
927 ''' Create a new node of this class and return its id.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
928
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parents:
diff changeset
929 The keyword arguments in 'propvalues' map property names to values.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
930
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parents:
diff changeset
931 The values of arguments must be acceptable for the types of their
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parents:
diff changeset
932 corresponding properties or a TypeError is raised.
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diff changeset
933
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parents:
diff changeset
934 If this class has a key property, it must be present and its value
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parents:
diff changeset
935 must not collide with other key strings or a ValueError is raised.
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diff changeset
936
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parents:
diff changeset
937 Any other properties on this class that are missing from the
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diff changeset
938 'propvalues' dictionary are set to None.
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parents:
diff changeset
939
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parents:
diff changeset
940 If an id in a link or multilink property does not refer to a valid
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diff changeset
941 node, an IndexError is raised.
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diff changeset
942 '''
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parents:
diff changeset
943 if propvalues.has_key('id'):
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diff changeset
944 raise KeyError, '"id" is reserved'
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diff changeset
945
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diff changeset
946 if self.db.journaltag is None:
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diff changeset
947 raise DatabaseError, 'Database open read-only'
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diff changeset
948
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parents:
diff changeset
949 if propvalues.has_key('creation') or propvalues.has_key('activity'):
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parents:
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950 raise KeyError, '"creation" and "activity" are reserved'
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
951
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952 self.fireAuditors('create', None, propvalues)
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diff changeset
953
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diff changeset
954 # new node's id
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diff changeset
955 newid = self.db.newid(self.classname)
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diff changeset
956
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diff changeset
957 # validate propvalues
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958 num_re = re.compile('^\d+$')
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959 for key, value in propvalues.items():
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parents:
diff changeset
960 if key == self.key:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
961 try:
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diff changeset
962 self.lookup(value)
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diff changeset
963 except KeyError:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
964 pass
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diff changeset
965 else:
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966 raise ValueError, 'node with key "%s" exists'%value
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diff changeset
967
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diff changeset
968 # try to handle this property
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diff changeset
969 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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970 prop = self.properties[key]
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971 except KeyError:
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972 raise KeyError, '"%s" has no property "%s"'%(self.classname,
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diff changeset
973 key)
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diff changeset
974
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975 if value is not None and isinstance(prop, Link):
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976 if type(value) != type(''):
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diff changeset
977 raise ValueError, 'link value must be String'
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978 link_class = self.properties[key].classname
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diff changeset
979 # if it isn't a number, it's a key
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980 if not num_re.match(value):
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diff changeset
981 try:
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982 value = self.db.classes[link_class].lookup(value)
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983 except (TypeError, KeyError):
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diff changeset
984 raise IndexError, 'new property "%s": %s not a %s'%(
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985 key, value, link_class)
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diff changeset
986 elif not self.db.getclass(link_class).hasnode(value):
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987 raise IndexError, '%s has no node %s'%(link_class, value)
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diff changeset
988
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diff changeset
989 # save off the value
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990 propvalues[key] = value
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diff changeset
991
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diff changeset
992 # register the link with the newly linked node
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diff changeset
993 if self.do_journal and self.properties[key].do_journal:
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994 self.db.addjournal(link_class, value, 'link',
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995 (self.classname, newid, key))
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diff changeset
996
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diff changeset
997 elif isinstance(prop, Multilink):
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diff changeset
998 if type(value) != type([]):
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diff changeset
999 raise TypeError, 'new property "%s" not a list of ids'%key
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parents:
diff changeset
1000
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parents:
diff changeset
1001 # clean up and validate the list of links
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parents:
diff changeset
1002 link_class = self.properties[key].classname
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parents:
diff changeset
1003 l = []
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parents:
diff changeset
1004 for entry in value:
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parents:
diff changeset
1005 if type(entry) != type(''):
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parents:
diff changeset
1006 raise ValueError, '"%s" multilink value (%r) '\
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parents:
diff changeset
1007 'must contain Strings'%(key, value)
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parents:
diff changeset
1008 # if it isn't a number, it's a key
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parents:
diff changeset
1009 if not num_re.match(entry):
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parents:
diff changeset
1010 try:
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parents:
diff changeset
1011 entry = self.db.classes[link_class].lookup(entry)
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parents:
diff changeset
1012 except (TypeError, KeyError):
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parents:
diff changeset
1013 raise IndexError, 'new property "%s": %s not a %s'%(
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1014 key, entry, self.properties[key].classname)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1015 l.append(entry)
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
1016 value = l
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parents:
diff changeset
1017 propvalues[key] = value
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parents:
diff changeset
1018
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parents:
diff changeset
1019 # handle additions
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parents:
diff changeset
1020 for nodeid in value:
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parents:
diff changeset
1021 if not self.db.getclass(link_class).hasnode(nodeid):
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parents:
diff changeset
1022 raise IndexError, '%s has no node %s'%(link_class,
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parents:
diff changeset
1023 nodeid)
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parents:
diff changeset
1024 # register the link with the newly linked node
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parents:
diff changeset
1025 if self.do_journal and self.properties[key].do_journal:
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parents:
diff changeset
1026 self.db.addjournal(link_class, nodeid, 'link',
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diff changeset
1027 (self.classname, newid, key))
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parents:
diff changeset
1028
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parents:
diff changeset
1029 elif isinstance(prop, String):
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parents:
diff changeset
1030 if type(value) != type(''):
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parents:
diff changeset
1031 raise TypeError, 'new property "%s" not a string'%key
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parents:
diff changeset
1032
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parents:
diff changeset
1033 elif isinstance(prop, Password):
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parents:
diff changeset
1034 if not isinstance(value, password.Password):
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parents:
diff changeset
1035 raise TypeError, 'new property "%s" not a Password'%key
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parents:
diff changeset
1036
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parents:
diff changeset
1037 elif isinstance(prop, Date):
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parents:
diff changeset
1038 if value is not None and not isinstance(value, date.Date):
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parents:
diff changeset
1039 raise TypeError, 'new property "%s" not a Date'%key
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parents:
diff changeset
1040
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parents:
diff changeset
1041 elif isinstance(prop, Interval):
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parents:
diff changeset
1042 if value is not None and not isinstance(value, date.Interval):
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parents:
diff changeset
1043 raise TypeError, 'new property "%s" not an Interval'%key
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parents:
diff changeset
1044
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parents:
diff changeset
1045 elif value is not None and isinstance(prop, Number):
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parents:
diff changeset
1046 try:
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parents:
diff changeset
1047 float(value)
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parents:
diff changeset
1048 except ValueError:
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parents:
diff changeset
1049 raise TypeError, 'new property "%s" not numeric'%key
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parents:
diff changeset
1050
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parents:
diff changeset
1051 elif value is not None and isinstance(prop, Boolean):
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parents:
diff changeset
1052 try:
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parents:
diff changeset
1053 int(value)
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parents:
diff changeset
1054 except ValueError:
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parents:
diff changeset
1055 raise TypeError, 'new property "%s" not boolean'%key
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diff changeset
1056
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parents:
diff changeset
1057 # make sure there's data where there needs to be
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parents:
diff changeset
1058 for key, prop in self.properties.items():
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parents:
diff changeset
1059 if propvalues.has_key(key):
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diff changeset
1060 continue
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diff changeset
1061 if key == self.key:
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parents:
diff changeset
1062 raise ValueError, 'key property "%s" is required'%key
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diff changeset
1063 if isinstance(prop, Multilink):
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1064 propvalues[key] = []
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parents:
diff changeset
1065 else:
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parents:
diff changeset
1066 propvalues[key] = None
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diff changeset
1067
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parents:
diff changeset
1068 # done
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parents:
diff changeset
1069 self.db.addnode(self.classname, newid, propvalues)
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parents:
diff changeset
1070 if self.do_journal:
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parents:
diff changeset
1071 self.db.addjournal(self.classname, newid, 'create', {})
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parents:
diff changeset
1072
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diff changeset
1073 self.fireReactors('create', newid, None)
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parents:
diff changeset
1074
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parents:
diff changeset
1075 return newid
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parents:
diff changeset
1076
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parents:
diff changeset
1077 def export_list(self, propnames, nodeid):
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diff changeset
1078 ''' Export a node - generate a list of CSV-able data in the order
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parents:
diff changeset
1079 specified by propnames for the given node.
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parents:
diff changeset
1080 '''
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parents:
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1081 properties = self.getprops()
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diff changeset
1082 l = []
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parents:
diff changeset
1083 for prop in propnames:
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diff changeset
1084 proptype = properties[prop]
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diff changeset
1085 value = self.get(nodeid, prop)
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parents:
diff changeset
1086 # "marshal" data where needed
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parents:
diff changeset
1087 if value is None:
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parents:
diff changeset
1088 pass
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parents:
diff changeset
1089 elif isinstance(proptype, hyperdb.Date):
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diff changeset
1090 value = value.get_tuple()
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parents:
diff changeset
1091 elif isinstance(proptype, hyperdb.Interval):
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parents:
diff changeset
1092 value = value.get_tuple()
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diff changeset
1093 elif isinstance(proptype, hyperdb.Password):
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parents:
diff changeset
1094 value = str(value)
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parents:
diff changeset
1095 l.append(repr(value))
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parents:
diff changeset
1096 return l
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parents:
diff changeset
1097
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parents:
diff changeset
1098 def import_list(self, propnames, proplist):
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diff changeset
1099 ''' Import a node - all information including "id" is present and
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parents:
diff changeset
1100 should not be sanity checked. Triggers are not triggered. The
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parents:
diff changeset
1101 journal should be initialised using the "creator" and "created"
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diff changeset
1102 information.
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diff changeset
1103
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1104 Return the nodeid of the node imported.
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diff changeset
1105 '''
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1106 if self.db.journaltag is None:
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1107 raise DatabaseError, 'Database open read-only'
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1108 properties = self.getprops()
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diff changeset
1109
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diff changeset
1110 # make the new node's property map
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diff changeset
1111 d = {}
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1112 for i in range(len(propnames)):
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diff changeset
1113 # Use eval to reverse the repr() used to output the CSV
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1114 value = eval(proplist[i])
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diff changeset
1115
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diff changeset
1116 # Figure the property for this column
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diff changeset
1117 propname = propnames[i]
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1118 prop = properties[propname]
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parents:
diff changeset
1119
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parents:
diff changeset
1120 # "unmarshal" where necessary
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parents:
diff changeset
1121 if propname == 'id':
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diff changeset
1122 newid = value
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parents:
diff changeset
1123 continue
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1124 elif value is None:
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diff changeset
1125 # don't set Nones
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1126 continue
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1127 elif isinstance(prop, hyperdb.Date):
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1128 value = date.Date(value)
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1129 elif isinstance(prop, hyperdb.Interval):
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1130 value = date.Interval(value)
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1131 elif isinstance(prop, hyperdb.Password):
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1132 pwd = password.Password()
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parents:
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1133 pwd.unpack(value)
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parents:
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1134 value = pwd
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parents:
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1135 d[propname] = value
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parents:
diff changeset
1136
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diff changeset
1137 # add the node and journal
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1138 self.db.addnode(self.classname, newid, d)
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parents:
diff changeset
1139
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1140 # extract the extraneous journalling gumpf and nuke it
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parents:
diff changeset
1141 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
1142 creator = d['creator']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1143 del d['creator']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1144 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1145 creator = None
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1146 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
1147 creation = d['creation']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1148 del d['creation']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1149 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1150 creation = None
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1151 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
1152 del d['activity']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1153 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
1154 creation)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1155 return newid
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1156
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1157 _marker = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1158 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
1159 '''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
1160
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1161 '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
1162 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
1163 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
1164
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1165 '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
1166 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
1167 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
1168 set cache=0.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1169 '''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1170 if propname == 'id':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1171 return nodeid
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1172
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1173 # 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
1174 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
1175
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1176 if propname == 'creation':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1177 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
1178 return d['creation']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1179 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1180 return date.Date()
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1181 if propname == 'activity':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1182 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
1183 return d['activity']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1184 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1185 return date.Date()
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1186 if propname == 'creator':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1187 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
1188 return d['creator']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1189 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1190 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
1191
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1192 # 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
1193 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
1194
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1195 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
1196 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
1197 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
1198 return []
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 None
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1201 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1202 return default
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1203
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1204 # 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
1205 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
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 return d[propname]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1209
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1210 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
1211 ''' 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
1212
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1213 '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
1214 IndexError is raised.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1215
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1216 '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
1217 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
1218 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
1219 set cache=0.
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 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
1222
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1223 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
1224 '''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
1225
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1226 '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
1227 IndexError is raised.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1228
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1229 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
1230 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
1231
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1232 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
1233 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
1234
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1235 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
1236 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
1237
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1238 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
1239 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
1240 '''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1241 if not propvalues:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1242 return propvalues
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1243
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1244 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
1245 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
1246
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1247 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
1248 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
1249
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1250 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
1251 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
1252
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1253 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
1254 # 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
1255 # 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
1256 # 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
1257 oldvalues = copy.deepcopy(self.db.getnode(self.classname, nodeid))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1258
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1259 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
1260 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
1261 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
1262 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
1263
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1264 # 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
1265 journalvalues = {}
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1266
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1267 # 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
1268 # 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
1269 multilink_changes = {}
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1270
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1271 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
1272 # 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
1273 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
1274 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1275 self.lookup(value)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1276 except KeyError:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1277 pass
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1278 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1279 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
1280
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1281 # 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
1282 # ... 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
1283 # the writeable properties.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1284 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1285 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
1286 except KeyError:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1287 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
1288 self.classname, propname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1289
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1290 # 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
1291 # doing anything
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1292 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
1293 if value == current:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1294 del propvalues[propname]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1295 continue
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1296 journalvalues[propname] = current
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1297
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1298 # 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
1299 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
1300 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
1301 # 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
1302 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
1303 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
1304 propname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1305 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
1306 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1307 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
1308 except (TypeError, KeyError):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1309 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
1310 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
1311
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1312 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
1313 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
1314 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
1315
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1316 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
1317 # 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
1318 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
1319 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
1320 (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
1321
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1322 # 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
1323 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
1324 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
1325 (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
1326
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1327 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
1328 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
1329 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
1330 ' ids'%propname
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1331 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
1332 l = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1333 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
1334 # 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
1335 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
1336 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
1337 '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
1338 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
1339 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1340 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
1341 except (TypeError, KeyError):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1342 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
1343 propname, entry,
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1344 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
1345 l.append(entry)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1346 value = l
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1347 propvalues[propname] = value
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1348
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1349 # 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
1350 add = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1351 remove = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1352
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1353 # handle removals
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1354 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
1355 l = node[propname]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1356 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1357 l = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1358 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
1359 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
1360 continue
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1361 # 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
1362 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
1363 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
1364 (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
1365 l.remove(id)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1366 remove.append(id)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1367
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1368 # handle additions
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1369 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
1370 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
1371 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
1372 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
1373 continue
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1374 # 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
1375 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
1376 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
1377 (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
1378 l.append(id)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1379 add.append(id)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1380
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1381 # 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
1382 l = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1383 if add:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1384 l.append(('+', add))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1385 if remove:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1386 l.append(('-', remove))
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1387 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
1388 if l:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1389 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
1390
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1391 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
1392 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
1393 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
1394
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1395 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
1396 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
1397 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
1398 propvalues[propname] = value
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1399
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1400 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
1401 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
1402 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
1403 propvalues[propname] = value
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1404
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1405 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
1406 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
1407 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
1408 'Interval'%propname
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1409 propvalues[propname] = value
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1410
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1411 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
1412 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1413 float(value)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1414 except ValueError:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1415 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
1416
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1417 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
1418 try:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1419 int(value)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1420 except ValueError:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1421 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
1422
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1423 # nothing to do?
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1424 if not propvalues:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1425 return propvalues
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parents:
diff changeset
1426
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1427 # 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
1428 self.db.setnode(self.classname, nodeid, propvalues, multilink_changes)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1429
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1430 if self.do_journal:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1431 self.db.addjournal(self.classname, nodeid, 'set', journalvalues)
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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 self.fireReactors('set', nodeid, oldvalues)
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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 return propvalues
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1436
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1437 def retire(self, nodeid):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1438 '''Retire a node.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1439
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1440 The properties on the node remain available from the get() method,
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1441 and the node's id is never reused.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1442
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parents:
diff changeset
1443 Retired nodes are not returned by the find(), list(), or lookup()
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parents:
diff changeset
1444 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
1445 '''
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parents:
diff changeset
1446 if self.db.journaltag is None:
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parents:
diff changeset
1447 raise DatabaseError, 'Database open read-only'
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1448
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1449 self.fireAuditors('retire', nodeid, None)
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parents:
diff changeset
1450
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parents:
diff changeset
1451 # use the arg for __retired__ to cope with any odd database type
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parents:
diff changeset
1452 # conversion (hello, sqlite)
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parents:
diff changeset
1453 sql = 'update _%s set __retired__=%s where id=%s'%(self.classname,
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parents:
diff changeset
1454 self.db.arg, self.db.arg)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1455 if __debug__:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1456 print >>hyperdb.DEBUG, 'retire', (self, sql, nodeid)
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parents:
diff changeset
1457 self.db.cursor.execute(sql, (1, nodeid))
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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 self.fireReactors('retire', nodeid, None)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1460
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1461 def is_retired(self, nodeid):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1462 '''Return true if the node is rerired
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1463 '''
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parents:
diff changeset
1464 sql = 'select __retired__ from _%s where id=%s'%(self.classname,
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1465 self.db.arg)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1466 if __debug__:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1467 print >>hyperdb.DEBUG, 'is_retired', (self, sql, nodeid)
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parents:
diff changeset
1468 self.db.cursor.execute(sql, (nodeid,))
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parents:
diff changeset
1469 return int(self.db.sql_fetchone()[0])
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parents:
diff changeset
1470
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1471 def destroy(self, nodeid):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1472 '''Destroy a node.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1473
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1474 WARNING: this method should never be used except in extremely rare
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1475 situations where there could never be links to the node being
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1476 deleted
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1477 WARNING: use retire() instead
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1478 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
1479 WARNING: really, use retire() instead
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1480
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1481 Well, I think that's enough warnings. This method exists mostly to
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1482 support the session storage of the cgi interface.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1483
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1484 The node is completely removed from the hyperdb, including all journal
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1485 entries. It will no longer be available, and will generally break code
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1486 if there are any references to the node.
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parents:
diff changeset
1487 '''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1488 if self.db.journaltag is None:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1489 raise DatabaseError, 'Database open read-only'
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parents:
diff changeset
1490 self.db.destroynode(self.classname, nodeid)
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parents:
diff changeset
1491
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1492 def history(self, nodeid):
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1493 '''Retrieve the journal of edits on a particular node.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1494
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1495 '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
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parents:
diff changeset
1496 IndexError is raised.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1497
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1498 The returned list contains tuples of the form
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parents:
diff changeset
1499
1410
3a853f1c20b5 backporting fixes from HEAD
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parents: 1366
diff changeset
1500 (nodeid, date, tag, action, params)
1356
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1501
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parents:
diff changeset
1502 '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
1503 'tag' is the journaltag specified when the database was opened.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1504 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1505 if not self.do_journal:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1506 raise ValueError, 'Journalling is disabled for this class'
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parents:
diff changeset
1507 return self.db.getjournal(self.classname, nodeid)
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parents:
diff changeset
1508
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1509 # Locating nodes:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1510 def hasnode(self, nodeid):
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parents:
diff changeset
1511 '''Determine if the given nodeid actually exists
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1512 '''
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parents:
diff changeset
1513 return self.db.hasnode(self.classname, nodeid)
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parents:
diff changeset
1514
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parents:
diff changeset
1515 def setkey(self, propname):
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parents:
diff changeset
1516 '''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
1517
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1518 'propname' must be the name of a String property of this class or
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parents:
diff changeset
1519 None, or a TypeError is raised. The values of the key property on
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parents:
diff changeset
1520 all existing nodes must be unique or a ValueError is raised.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1521 '''
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parents:
diff changeset
1522 # XXX create an index on the key prop column
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parents:
diff changeset
1523 prop = self.getprops()[propname]
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1524 if not isinstance(prop, String):
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parents:
diff changeset
1525 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
1526 self.key = propname
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1527
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1528 def getkey(self):
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parents:
diff changeset
1529 '''Return the name of the key property for this class or None.'''
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parents:
diff changeset
1530 return self.key
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parents:
diff changeset
1531
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parents:
diff changeset
1532 def labelprop(self, default_to_id=0):
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parents:
diff changeset
1533 ''' Return the property name for a label for the given node.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1534
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parents:
diff changeset
1535 This method attempts to generate a consistent label for the node.
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parents:
diff changeset
1536 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
1537 1. key property
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parents:
diff changeset
1538 2. "name" property
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parents:
diff changeset
1539 3. "title" property
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parents:
diff changeset
1540 4. first property from the sorted property name list
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1541 '''
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parents:
diff changeset
1542 k = self.getkey()
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parents:
diff changeset
1543 if k:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1544 return k
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diff changeset
1545 props = self.getprops()
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parents:
diff changeset
1546 if props.has_key('name'):
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diff changeset
1547 return 'name'
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parents:
diff changeset
1548 elif props.has_key('title'):
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parents:
diff changeset
1549 return 'title'
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parents:
diff changeset
1550 if default_to_id:
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parents:
diff changeset
1551 return 'id'
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parents:
diff changeset
1552 props = props.keys()
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parents:
diff changeset
1553 props.sort()
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parents:
diff changeset
1554 return props[0]
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parents:
diff changeset
1555
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parents:
diff changeset
1556 def lookup(self, keyvalue):
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parents:
diff changeset
1557 '''Locate a particular node by its key property and return its id.
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parents:
diff changeset
1558
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parents:
diff changeset
1559 If this class has no key property, a TypeError is raised. If the
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parents:
diff changeset
1560 'keyvalue' matches one of the values for the key property among
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parents:
diff changeset
1561 the nodes in this class, the matching node's id is returned;
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parents:
diff changeset
1562 otherwise a KeyError is raised.
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parents:
diff changeset
1563 '''
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parents:
diff changeset
1564 if not self.key:
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parents:
diff changeset
1565 raise TypeError, 'No key property set for class %s'%self.classname
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parents:
diff changeset
1566
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parents:
diff changeset
1567 # 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
1568 # sqlite)
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parents:
diff changeset
1569 sql = "select id from _%s where _%s=%s and __retired__ <> %s"%(
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parents:
diff changeset
1570 self.classname, self.key, self.db.arg, self.db.arg)
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parents:
diff changeset
1571 self.db.sql(sql, (keyvalue, 1))
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1572
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1573 # see if there was a result that's not retired
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parents:
diff changeset
1574 row = self.db.sql_fetchone()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1575 if not row:
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parents:
diff changeset
1576 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
1577 keyvalue, self.classname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1578
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1579 # return the id
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1580 return row[0]
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1581
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1582 def find(self, **propspec):
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parents:
diff changeset
1583 '''Get the ids of nodes in this class which link to the given nodes.
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1584
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1585 'propspec' consists of keyword args propname=nodeid or
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1586 propname={nodeid:1, }
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1587 '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
1588 KeyError is raised. That property must be a Link or Multilink
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1589 property, or a TypeError is raised.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1590
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1591 Any node in this class whose 'propname' property links to any of the
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parents:
diff changeset
1592 nodeids will be returned. Used by the full text indexing, which knows
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parents:
diff changeset
1593 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
1594 issues:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1595
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parents:
diff changeset
1596 db.issue.find(messages={'1':1,'3':1}, files={'7':1})
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1597 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1598 if __debug__:
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parents:
diff changeset
1599 print >>hyperdb.DEBUG, 'find', (self, propspec)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1600
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1601 # shortcut
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1602 if not propspec:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1603 return []
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parents:
diff changeset
1604
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parents:
diff changeset
1605 # validate the args
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diff changeset
1606 props = self.getprops()
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parents:
diff changeset
1607 propspec = propspec.items()
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parents:
diff changeset
1608 for propname, nodeids in propspec:
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parents:
diff changeset
1609 # check the prop is OK
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diff changeset
1610 prop = props[propname]
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parents:
diff changeset
1611 if not isinstance(prop, Link) and not isinstance(prop, Multilink):
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parents:
diff changeset
1612 raise TypeError, "'%s' not a Link/Multilink property"%propname
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parents:
diff changeset
1613
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diff changeset
1614 # first, links
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diff changeset
1615 where = []
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parents:
diff changeset
1616 allvalues = ()
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parents:
diff changeset
1617 a = self.db.arg
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diff changeset
1618 for prop, values in propspec:
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parents:
diff changeset
1619 if not isinstance(props[prop], hyperdb.Link):
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diff changeset
1620 continue
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parents:
diff changeset
1621 if type(values) is type(''):
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diff changeset
1622 allvalues += (values,)
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diff changeset
1623 where.append('_%s = %s'%(prop, a))
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parents:
diff changeset
1624 else:
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diff changeset
1625 allvalues += tuple(values.keys())
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diff changeset
1626 where.append('_%s in (%s)'%(prop, ','.join([a]*len(values))))
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
1627 tables = []
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1628 if where:
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parents:
diff changeset
1629 tables.append('select id as nodeid from _%s where %s'%(
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diff changeset
1630 self.classname, ' and '.join(where)))
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diff changeset
1631
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diff changeset
1632 # now multilinks
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diff changeset
1633 for prop, values in propspec:
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diff changeset
1634 if not isinstance(props[prop], hyperdb.Multilink):
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diff changeset
1635 continue
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parents:
diff changeset
1636 if type(values) is type(''):
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diff changeset
1637 allvalues += (values,)
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diff changeset
1638 s = a
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diff changeset
1639 else:
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diff changeset
1640 allvalues += tuple(values.keys())
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diff changeset
1641 s = ','.join([a]*len(values))
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diff changeset
1642 tables.append('select nodeid from %s_%s where linkid in (%s)'%(
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diff changeset
1643 self.classname, prop, s))
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diff changeset
1644 sql = '\nunion\n'.join(tables)
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diff changeset
1645 self.db.sql(sql, allvalues)
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diff changeset
1646 l = [x[0] for x in self.db.sql_fetchall()]
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parents:
diff changeset
1647 if __debug__:
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diff changeset
1648 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
1649 return l
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1650
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diff changeset
1651 def stringFind(self, **requirements):
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diff changeset
1652 '''Locate a particular node by matching a set of its String
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parents:
diff changeset
1653 properties in a caseless search.
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diff changeset
1654
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diff changeset
1655 If the property is not a String property, a TypeError is raised.
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diff changeset
1656
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diff changeset
1657 The return is a list of the id of all nodes that match.
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parents:
diff changeset
1658 '''
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parents:
diff changeset
1659 where = []
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diff changeset
1660 args = []
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diff changeset
1661 for propname in requirements.keys():
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diff changeset
1662 prop = self.properties[propname]
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diff changeset
1663 if isinstance(not prop, String):
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diff changeset
1664 raise TypeError, "'%s' not a String property"%propname
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diff changeset
1665 where.append(propname)
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diff changeset
1666 args.append(requirements[propname].lower())
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diff changeset
1667
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diff changeset
1668 # generate the where clause
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diff changeset
1669 s = ' and '.join(['_%s=%s'%(col, self.db.arg) for col in where])
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diff changeset
1670 sql = 'select id from _%s where %s'%(self.classname, s)
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diff changeset
1671 self.db.sql(sql, tuple(args))
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diff changeset
1672 l = [x[0] for x in self.db.sql_fetchall()]
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diff changeset
1673 if __debug__:
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diff changeset
1674 print >>hyperdb.DEBUG, 'find ... ', l
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
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parents:
diff changeset
1675 return l
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parents:
diff changeset
1676
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diff changeset
1677 def list(self):
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diff changeset
1678 ''' Return a list of the ids of the active nodes in this class.
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diff changeset
1679 '''
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1680 return self.db.getnodeids(self.classname, retired=0)
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diff changeset
1681
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diff changeset
1682 def filter(self, search_matches, filterspec, sort=(None,None),
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diff changeset
1683 group=(None,None)):
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diff changeset
1684 ''' Return a list of the ids of the active nodes in this class that
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diff changeset
1685 match the 'filter' spec, sorted by the group spec and then the
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diff changeset
1686 sort spec
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diff changeset
1687
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diff changeset
1688 "filterspec" is {propname: value(s)}
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diff changeset
1689 "sort" and "group" are (dir, prop) where dir is '+', '-' or None
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diff changeset
1690 and prop is a prop name or None
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diff changeset
1691 "search_matches" is {nodeid: marker}
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diff changeset
1692
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diff changeset
1693 The filter must match all properties specificed - but if the
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diff changeset
1694 property value to match is a list, any one of the values in the
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diff changeset
1695 list may match for that property to match.
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diff changeset
1696 '''
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diff changeset
1697 # just don't bother if the full-text search matched diddly
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diff changeset
1698 if search_matches == {}:
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diff changeset
1699 return []
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diff changeset
1700
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diff changeset
1701 cn = self.classname
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diff changeset
1702
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diff changeset
1703 # figure the WHERE clause from the filterspec
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diff changeset
1704 props = self.getprops()
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diff changeset
1705 frum = ['_'+cn]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1706 where = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1707 args = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1708 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
1709 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
1710 propclass = props[k]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1711 # 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
1712 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
1713 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
1714 frum.append(tn)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1715 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
1716 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
1717 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
1718 args = args + v
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1719 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1720 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
1721 args.append(v)
1366
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1722 elif k == 'id':
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1723 if isinstance(v, type([])):
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1724 s = ','.join([a for x in v])
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1725 where.append('%s in (%s)'%(k, s))
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1726 args = args + v
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1727 else:
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1728 where.append('%s=%s'%(k, a))
1cc9c6bc17bd merge fixes from HEAD
Richard Jones <richard@users.sourceforge.net>
parents: 1356
diff changeset
1729 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
1730 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
1731 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
1732 v = [v]
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1733
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1734 # 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
1735 # 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
1736 # 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
1737 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
1738
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1739 # 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
1740 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
1741 # 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
1742 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
1743 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
1744 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
1745 v.remove('-1')
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1746 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
1747 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1748 xtra = ''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1749 if v:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1750 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
1751 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
1752 args = args + v
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 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
1755 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1756 if v == '-1':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1757 v = None
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 is NULL'%k)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1759 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1760 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
1761 args.append(v)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1762 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
1763 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
1764 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
1765 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
1766 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
1767 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1768 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
1769 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
1770 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
1771 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
1772 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
1773 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
1774 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
1775 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1776 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
1777 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
1778 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1779 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
1780 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
1781 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
1782 args = args + v
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1783 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1784 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
1785 args.append(v)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1786
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1787 # 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
1788 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
1789 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
1790 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
1791 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
1792 args = args + v
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1793
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1794 # "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
1795 # can modify it...)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1796 orderby = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1797 ordercols = []
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1798 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
1799 if group[0] != '-':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1800 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
1801 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
1802 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1803 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
1804 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
1805
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1806 # 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
1807 group = ''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1808 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
1809 direction, colname = sort
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1810 if direction != '-':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1811 if colname == 'id':
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 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1814 orderby.append('_'+colname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1815 ordercols.append('_'+colname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1816 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1817 if colname == 'id':
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1818 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
1819 ordercols.append(colname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1820 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1821 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
1822 ordercols.append('_'+colname)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1823
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1824 # construct the SQL
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1825 frum = ','.join(frum)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1826 if where:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1827 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
1828 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1829 where = ''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1830 cols = ['id']
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1831 if orderby:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1832 cols = cols + ordercols
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1833 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
1834 else:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1835 order = ''
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1836 cols = ','.join(cols)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1837 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
1838 args = tuple(args)
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1839 if __debug__:
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1840 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
1841 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
1842 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
1843
83f33642d220 [[Metadata associated with this commit was garbled during conversion from CVS
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1844 # 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
1845 # XXX The filter(None, l) bit is sqlite-specific... if there's _NO_
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parents:
diff changeset
1846 # XXX matches to a fetch, it returns NULL instead of nothing!?!
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diff changeset
1847 return filter(None, [row[0] for row in l])
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diff changeset
1848
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diff changeset
1849 def count(self):
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parents:
diff changeset
1850 '''Get the number of nodes in this class.
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parents:
diff changeset
1851
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parents:
diff changeset
1852 If the returned integer is 'numnodes', the ids of all the nodes
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1853 in this class run from 1 to numnodes, and numnodes+1 will be the
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parents:
diff changeset
1854 id of the next node to be created in this class.
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parents:
diff changeset
1855 '''
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parents:
diff changeset
1856 return self.db.countnodes(self.classname)
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parents:
diff changeset
1857
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diff changeset
1858 # Manipulating properties:
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diff changeset
1859 def getprops(self, protected=1):
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diff changeset
1860 '''Return a dictionary mapping property names to property objects.
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parents:
diff changeset
1861 If the "protected" flag is true, we include protected properties -
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diff changeset
1862 those which may not be modified.
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diff changeset
1863 '''
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1864 d = self.properties.copy()
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parents:
diff changeset
1865 if protected:
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parents:
diff changeset
1866 d['id'] = String()
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parents:
diff changeset
1867 d['creation'] = hyperdb.Date()
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diff changeset
1868 d['activity'] = hyperdb.Date()
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diff changeset
1869 d['creator'] = hyperdb.Link('user')
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parents:
diff changeset
1870 return d
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diff changeset
1871
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diff changeset
1872 def addprop(self, **properties):
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diff changeset
1873 '''Add properties to this class.
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parents:
diff changeset
1874
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parents:
diff changeset
1875 The keyword arguments in 'properties' must map names to property
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1876 objects, or a TypeError is raised. None of the keys in 'properties'
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1877 may collide with the names of existing properties, or a ValueError
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1878 is raised before any properties have been added.
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1879 '''
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1880 for key in properties.keys():
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diff changeset
1881 if self.properties.has_key(key):
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1882 raise ValueError, key
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1883 self.properties.update(properties)
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diff changeset
1884
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parents:
diff changeset
1885 def index(self, nodeid):
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parents:
diff changeset
1886 '''Add (or refresh) the node to search indexes
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parents:
diff changeset
1887 '''
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diff changeset
1888 # find all the String properties that have indexme
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diff changeset
1889 for prop, propclass in self.getprops().items():
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diff changeset
1890 if isinstance(propclass, String) and propclass.indexme:
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diff changeset
1891 try:
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diff changeset
1892 value = str(self.get(nodeid, prop))
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diff changeset
1893 except IndexError:
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diff changeset
1894 # node no longer exists - entry should be removed
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1895 self.db.indexer.purge_entry((self.classname, nodeid, prop))
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1896 else:
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diff changeset
1897 # and index them under (classname, nodeid, property)
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1898 self.db.indexer.add_text((self.classname, nodeid, prop),
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1899 value)
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diff changeset
1900
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diff changeset
1901
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diff changeset
1902 #
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1903 # Detector interface
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diff changeset
1904 #
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1905 def audit(self, event, detector):
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1906 '''Register a detector
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diff changeset
1907 '''
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1908 l = self.auditors[event]
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1909 if detector not in l:
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1910 self.auditors[event].append(detector)
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1911
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1912 def fireAuditors(self, action, nodeid, newvalues):
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1913 '''Fire all registered auditors.
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1914 '''
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1915 for audit in self.auditors[action]:
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1916 audit(self.db, self, nodeid, newvalues)
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1917
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1918 def react(self, event, detector):
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1919 '''Register a detector
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diff changeset
1920 '''
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1921 l = self.reactors[event]
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1922 if detector not in l:
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1923 self.reactors[event].append(detector)
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1924
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1925 def fireReactors(self, action, nodeid, oldvalues):
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1926 '''Fire all registered reactors.
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1927 '''
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1928 for react in self.reactors[action]:
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1929 react(self.db, self, nodeid, oldvalues)
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1930
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1931 class FileClass(Class):
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1932 '''This class defines a large chunk of data. To support this, it has a
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1933 mandatory String property "content" which is typically saved off
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1934 externally to the hyperdb.
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1935
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diff changeset
1936 The default MIME type of this data is defined by the
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diff changeset
1937 "default_mime_type" class attribute, which may be overridden by each
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diff changeset
1938 node if the class defines a "type" String property.
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1939 '''
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1940 default_mime_type = 'text/plain'
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1941
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1942 def create(self, **propvalues):
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1943 ''' snaffle the file propvalue and store in a file
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1944 '''
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1945 content = propvalues['content']
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1946 del propvalues['content']
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1947 newid = Class.create(self, **propvalues)
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1948 self.db.storefile(self.classname, newid, None, content)
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1949 return newid
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1950
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1951 def import_list(self, propnames, proplist):
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1952 ''' Trap the "content" property...
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1953 '''
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1954 # dupe this list so we don't affect others
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1955 propnames = propnames[:]
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1956
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1957 # extract the "content" property from the proplist
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1958 i = propnames.index('content')
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1959 content = eval(proplist[i])
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1960 del propnames[i]
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1961 del proplist[i]
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1962
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1963 # do the normal import
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1964 newid = Class.import_list(self, propnames, proplist)
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1965
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1966 # save off the "content" file
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1967 self.db.storefile(self.classname, newid, None, content)
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1968 return newid
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diff changeset
1969
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1970 _marker = []
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1971 def get(self, nodeid, propname, default=_marker, cache=1):
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1972 ''' trap the content propname and get it from the file
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1973 '''
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1974
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1975 poss_msg = 'Possibly a access right configuration problem.'
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1976 if propname == 'content':
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1977 try:
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1978 return self.db.getfile(self.classname, nodeid, None)
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1979 except IOError, (strerror):
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1980 # BUG: by catching this we donot see an error in the log.
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1981 return 'ERROR reading file: %s%s\n%s\n%s'%(
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1982 self.classname, nodeid, poss_msg, strerror)
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1983 if default is not self._marker:
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1984 return Class.get(self, nodeid, propname, default, cache=cache)
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1985 else:
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1986 return Class.get(self, nodeid, propname, cache=cache)
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1987
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1988 def getprops(self, protected=1):
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1989 ''' In addition to the actual properties on the node, these methods
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1990 provide the "content" property. If the "protected" flag is true,
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1991 we include protected properties - those which may not be
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1992 modified.
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1993 '''
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1994 d = Class.getprops(self, protected=protected).copy()
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1995 d['content'] = hyperdb.String()
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1996 return d
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1997
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1998 def index(self, nodeid):
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1999 ''' Index the node in the search index.
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2000
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2001 We want to index the content in addition to the normal String
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2002 property indexing.
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2003 '''
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2004 # perform normal indexing
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2005 Class.index(self, nodeid)
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2006
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2007 # get the content to index
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2008 content = self.get(nodeid, 'content')
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2009
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2010 # figure the mime type
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2011 if self.properties.has_key('type'):
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2012 mime_type = self.get(nodeid, 'type')
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2013 else:
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2014 mime_type = self.default_mime_type
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2015
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2016 # and index!
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2017 self.db.indexer.add_text((self.classname, nodeid, 'content'), content,
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2018 mime_type)
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2019
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2020 # XXX deviation from spec - was called ItemClass
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2021 class IssueClass(Class, roundupdb.IssueClass):
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2022 # Overridden methods:
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2023 def __init__(self, db, classname, **properties):
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2024 '''The newly-created class automatically includes the "messages",
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2025 "files", "nosy", and "superseder" properties. If the 'properties'
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2026 dictionary attempts to specify any of these properties or a
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2027 "creation" or "activity" property, a ValueError is raised.
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2028 '''
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2029 if not properties.has_key('title'):
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2030 properties['title'] = hyperdb.String(indexme='yes')
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2031 if not properties.has_key('messages'):
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2032 properties['messages'] = hyperdb.Multilink("msg")
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2033 if not properties.has_key('files'):
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2034 properties['files'] = hyperdb.Multilink("file")
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2035 if not properties.has_key('nosy'):
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2036 # note: journalling is turned off as it really just wastes
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2037 # space. this behaviour may be overridden in an instance
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2038 properties['nosy'] = hyperdb.Multilink("user", do_journal="no")
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2039 if not properties.has_key('superseder'):
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2040 properties['superseder'] = hyperdb.Multilink(classname)
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2041 Class.__init__(self, db, classname, **properties)
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2042
Roundup Issue Tracker: http://roundup-tracker.org/