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annotate roundup/hyperdb.py @ 86:b89712288636

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just some comments
author Richard Jones <richard@users.sourceforge.net>
date Fri, 27 Jul 2001 05:17:14 +0000
parents c7c14960f413
children b6b30ba53986
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rev   line source
86
b89712288636 just some comments
Richard Jones <richard@users.sourceforge.net>
parents: 26
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1 # $Id: hyperdb.py,v 1.3 2001-07-27 05:17:14 richard Exp $
25
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2
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3 # standard python modules
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4 import cPickle, re, string
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5
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6 # roundup modules
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7 import date
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8
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9
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10 #
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11 # Types
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12 #
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13 class BaseType:
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14 isStringType = 0
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15 isDateType = 0
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16 isIntervalType = 0
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17 isLinkType = 0
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18 isMultilinkType = 0
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19
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20 class String(BaseType):
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21 def __init__(self):
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22 """An object designating a String property."""
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23 pass
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24 def __repr__(self):
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25 return '<%s>'%self.__class__
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26 isStringType = 1
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27
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28 class Date(BaseType, String):
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29 isDateType = 1
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30
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31 class Interval(BaseType, String):
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32 isIntervalType = 1
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33
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34 class Link(BaseType):
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35 def __init__(self, classname):
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36 """An object designating a Link property that links to
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37 nodes in a specified class."""
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38 self.classname = classname
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39 def __repr__(self):
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40 return '<%s to "%s">'%(self.__class__, self.classname)
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41 isLinkType = 1
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42
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43 class Multilink(BaseType, Link):
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44 """An object designating a Multilink property that links
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45 to nodes in a specified class.
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46 """
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47 isMultilinkType = 1
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48
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49 class DatabaseError(ValueError):
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50 pass
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51
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52
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53 #
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54 # the base Database class
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55 #
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56 class Database:
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57 # flag to set on retired entries
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58 RETIRED_FLAG = '__hyperdb_retired'
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59
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60
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61 #
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62 # The base Class class
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63 #
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64 class Class:
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65 """The handle to a particular class of nodes in a hyperdatabase."""
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66
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67 def __init__(self, db, classname, **properties):
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68 """Create a new class with a given name and property specification.
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69
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70 'classname' must not collide with the name of an existing class,
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71 or a ValueError is raised. The keyword arguments in 'properties'
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72 must map names to property objects, or a TypeError is raised.
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73 """
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74 self.classname = classname
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75 self.properties = properties
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76 self.db = db
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77 self.key = ''
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78
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79 # do the db-related init stuff
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80 db.addclass(self)
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81
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82 # Editing nodes:
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83
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84 def create(self, **propvalues):
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85 """Create a new node of this class and return its id.
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86
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87 The keyword arguments in 'propvalues' map property names to values.
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88
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89 The values of arguments must be acceptable for the types of their
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90 corresponding properties or a TypeError is raised.
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91
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92 If this class has a key property, it must be present and its value
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93 must not collide with other key strings or a ValueError is raised.
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94
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95 Any other properties on this class that are missing from the
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96 'propvalues' dictionary are set to None.
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97
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98 If an id in a link or multilink property does not refer to a valid
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99 node, an IndexError is raised.
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100 """
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101 if self.db.journaltag is None:
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102 raise DatabaseError, 'Database open read-only'
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103 newid = str(self.count() + 1)
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104
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105 # validate propvalues
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106 num_re = re.compile('^\d+$')
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107 for key, value in propvalues.items():
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108 if key == self.key:
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109 try:
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110 self.lookup(value)
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111 except KeyError:
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112 pass
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113 else:
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114 raise ValueError, 'node with key "%s" exists'%value
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115
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116 prop = self.properties[key]
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117
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118 if prop.isLinkType:
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119 value = str(value)
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120 link_class = self.properties[key].classname
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121 if not num_re.match(value):
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122 try:
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123 value = self.db.classes[link_class].lookup(value)
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124 except:
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125 raise ValueError, 'new property "%s": %s not a %s'%(
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126 key, value, self.properties[key].classname)
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127 propvalues[key] = value
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128 if not self.db.hasnode(link_class, value):
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129 raise ValueError, '%s has no node %s'%(link_class, value)
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130
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131 # register the link with the newly linked node
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132 self.db.addjournal(link_class, value, 'link',
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133 (self.classname, newid, key))
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134
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135 elif prop.isMultilinkType:
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136 if type(value) != type([]):
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137 raise TypeError, 'new property "%s" not a list of ids'%key
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138 link_class = self.properties[key].classname
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139 l = []
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140 for entry in map(str, value):
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141 if not num_re.match(entry):
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142 try:
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143 entry = self.db.classes[link_class].lookup(entry)
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144 except:
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145 raise ValueError, 'new property "%s": %s not a %s'%(
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146 key, entry, self.properties[key].classname)
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147 l.append(entry)
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148 value = l
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149 propvalues[key] = value
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150
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151 # handle additions
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152 for id in value:
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153 if not self.db.hasnode(link_class, id):
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154 raise ValueError, '%s has no node %s'%(link_class, id)
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155 # register the link with the newly linked node
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156 self.db.addjournal(link_class, id, 'link',
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157 (self.classname, newid, key))
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158
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159 elif prop.isStringType:
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160 if type(value) != type(''):
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161 raise TypeError, 'new property "%s" not a string'%key
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162
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163 elif prop.isDateType:
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164 if not hasattr(value, 'isDate'):
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165 raise TypeError, 'new property "%s" not a Date'% key
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parents:
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166
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167 elif prop.isIntervalType:
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parents:
diff changeset
168 if not hasattr(value, 'isInterval'):
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parents:
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169 raise TypeError, 'new property "%s" not an Interval'% key
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170
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diff changeset
171 for key,prop in self.properties.items():
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parents:
diff changeset
172 if propvalues.has_key(str(key)):
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parents:
diff changeset
173 continue
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174 if prop.isMultilinkType:
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175 propvalues[key] = []
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176 else:
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177 propvalues[key] = None
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178
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179 # done
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180 self.db.addnode(self.classname, newid, propvalues)
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181 self.db.addjournal(self.classname, newid, 'create', propvalues)
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182 return newid
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183
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184 def get(self, nodeid, propname):
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185 """Get the value of a property on an existing node of this class.
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186
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187 'nodeid' must be the id of an existing node of this class or an
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188 IndexError is raised. 'propname' must be the name of a property
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189 of this class or a KeyError is raised.
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190 """
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191 d = self.db.getnode(self.classname, str(nodeid))
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192 return d[propname]
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193
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194 # XXX not in spec
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195 def getnode(self, nodeid):
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196 ''' Return a convenience wrapper for the node
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197 '''
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198 return Node(self, nodeid)
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199
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200 def set(self, nodeid, **propvalues):
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201 """Modify a property on an existing node of this class.
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202
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203 'nodeid' must be the id of an existing node of this class or an
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204 IndexError is raised.
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205
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206 Each key in 'propvalues' must be the name of a property of this
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207 class or a KeyError is raised.
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diff changeset
208
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209 All values in 'propvalues' must be acceptable types for their
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diff changeset
210 corresponding properties or a TypeError is raised.
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211
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212 If the value of the key property is set, it must not collide with
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213 other key strings or a ValueError is raised.
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214
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diff changeset
215 If the value of a Link or Multilink property contains an invalid
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216 node id, a ValueError is raised.
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217 """
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218 if not propvalues:
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219 return
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220 if self.db.journaltag is None:
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diff changeset
221 raise DatabaseError, 'Database open read-only'
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222 nodeid = str(nodeid)
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223 node = self.db.getnode(self.classname, nodeid)
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224 if node.has_key(self.db.RETIRED_FLAG):
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225 raise IndexError
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226 num_re = re.compile('^\d+$')
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diff changeset
227 for key, value in propvalues.items():
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parents:
diff changeset
228 if not node.has_key(key):
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diff changeset
229 raise KeyError, key
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diff changeset
230
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diff changeset
231 if key == self.key:
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232 try:
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233 self.lookup(value)
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234 except KeyError:
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235 pass
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236 else:
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237 raise ValueError, 'node with key "%s" exists'%value
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diff changeset
238
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diff changeset
239 prop = self.properties[key]
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diff changeset
240
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diff changeset
241 if prop.isLinkType:
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242 value = str(value)
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243 link_class = self.properties[key].classname
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diff changeset
244 if not num_re.match(value):
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diff changeset
245 try:
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246 value = self.db.classes[link_class].lookup(value)
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247 except:
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248 raise ValueError, 'new property "%s": %s not a %s'%(
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parents:
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249 key, value, self.properties[key].classname)
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diff changeset
250
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diff changeset
251 if not self.db.hasnode(link_class, value):
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parents:
diff changeset
252 raise ValueError, '%s has no node %s'%(link_class, value)
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parents:
diff changeset
253
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diff changeset
254 # register the unlink with the old linked node
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diff changeset
255 if node[key] is not None:
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diff changeset
256 self.db.addjournal(link_class, node[key], 'unlink',
4cf1daf2f2eb More Grande Splite
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parents:
diff changeset
257 (self.classname, nodeid, key))
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diff changeset
258
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diff changeset
259 # register the link with the newly linked node
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diff changeset
260 if value is not None:
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parents:
diff changeset
261 self.db.addjournal(link_class, value, 'link',
4cf1daf2f2eb More Grande Splite
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diff changeset
262 (self.classname, nodeid, key))
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parents:
diff changeset
263
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diff changeset
264 elif prop.isMultilinkType:
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parents:
diff changeset
265 if type(value) != type([]):
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diff changeset
266 raise TypeError, 'new property "%s" not a list of ids'%key
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diff changeset
267 link_class = self.properties[key].classname
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parents:
diff changeset
268 l = []
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parents:
diff changeset
269 for entry in map(str, value):
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parents:
diff changeset
270 if not num_re.match(entry):
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parents:
diff changeset
271 try:
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diff changeset
272 entry = self.db.classes[link_class].lookup(entry)
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diff changeset
273 except:
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parents:
diff changeset
274 raise ValueError, 'new property "%s": %s not a %s'%(
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parents:
diff changeset
275 key, entry, self.properties[key].classname)
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parents:
diff changeset
276 l.append(entry)
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diff changeset
277 value = l
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diff changeset
278 propvalues[key] = value
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diff changeset
279
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diff changeset
280 #handle removals
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parents:
diff changeset
281 l = node[key]
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parents:
diff changeset
282 for id in l[:]:
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parents:
diff changeset
283 if id in value:
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parents:
diff changeset
284 continue
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parents:
diff changeset
285 # register the unlink with the old linked node
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diff changeset
286 self.db.addjournal(link_class, id, 'unlink',
4cf1daf2f2eb More Grande Splite
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parents:
diff changeset
287 (self.classname, nodeid, key))
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parents:
diff changeset
288 l.remove(id)
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parents:
diff changeset
289
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parents:
diff changeset
290 # handle additions
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parents:
diff changeset
291 for id in value:
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parents:
diff changeset
292 if not self.db.hasnode(link_class, id):
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parents:
diff changeset
293 raise ValueError, '%s has no node %s'%(link_class, id)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
294 if id in l:
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parents:
diff changeset
295 continue
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parents:
diff changeset
296 # register the link with the newly linked node
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parents:
diff changeset
297 self.db.addjournal(link_class, id, 'link',
4cf1daf2f2eb More Grande Splite
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parents:
diff changeset
298 (self.classname, nodeid, key))
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parents:
diff changeset
299 l.append(id)
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parents:
diff changeset
300
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diff changeset
301 elif prop.isStringType:
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parents:
diff changeset
302 if value is not None and type(value) != type(''):
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parents:
diff changeset
303 raise TypeError, 'new property "%s" not a string'%key
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parents:
diff changeset
304
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parents:
diff changeset
305 elif prop.isDateType:
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parents:
diff changeset
306 if not hasattr(value, 'isDate'):
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parents:
diff changeset
307 raise TypeError, 'new property "%s" not a Date'% key
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parents:
diff changeset
308
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parents:
diff changeset
309 elif prop.isIntervalType:
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parents:
diff changeset
310 if not hasattr(value, 'isInterval'):
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parents:
diff changeset
311 raise TypeError, 'new property "%s" not an Interval'% key
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parents:
diff changeset
312
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parents:
diff changeset
313 node[key] = value
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parents:
diff changeset
314
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diff changeset
315 self.db.setnode(self.classname, nodeid, node)
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parents:
diff changeset
316 self.db.addjournal(self.classname, nodeid, 'set', propvalues)
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parents:
diff changeset
317
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parents:
diff changeset
318 def retire(self, nodeid):
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parents:
diff changeset
319 """Retire a node.
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parents:
diff changeset
320
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parents:
diff changeset
321 The properties on the node remain available from the get() method,
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parents:
diff changeset
322 and the node's id is never reused.
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parents:
diff changeset
323
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diff changeset
324 Retired nodes are not returned by the find(), list(), or lookup()
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parents:
diff changeset
325 methods, and other nodes may reuse the values of their key properties.
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parents:
diff changeset
326 """
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parents:
diff changeset
327 nodeid = str(nodeid)
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parents:
diff changeset
328 if self.db.journaltag is None:
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parents:
diff changeset
329 raise DatabaseError, 'Database open read-only'
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parents:
diff changeset
330 node = self.db.getnode(self.classname, nodeid)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
331 node[self.db.RETIRED_FLAG] = 1
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
332 self.db.setnode(self.classname, nodeid, node)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
333 self.db.addjournal(self.classname, nodeid, 'retired', None)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
334
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
335 def history(self, nodeid):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
336 """Retrieve the journal of edits on a particular node.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
337
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parents:
diff changeset
338 'nodeid' must be the id of an existing node of this class or an
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parents:
diff changeset
339 IndexError is raised.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
340
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
341 The returned list contains tuples of the form
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
342
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
343 (date, tag, action, params)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
344
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
345 '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
346 'tag' is the journaltag specified when the database was opened.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
347 """
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parents:
diff changeset
348 return self.db.getjournal(self.classname, nodeid)
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parents:
diff changeset
349
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
350 # Locating nodes:
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parents:
diff changeset
351
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parents:
diff changeset
352 def setkey(self, propname):
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parents:
diff changeset
353 """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
354
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parents:
diff changeset
355 'propname' must be the name of a String property of this class or
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
356 None, or a TypeError is raised. The values of the key property on
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
357 all existing nodes must be unique or a ValueError is raised.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
358 """
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
359 self.key = propname
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
360
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
361 def getkey(self):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
362 """Return the name of the key property for this class or None."""
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
363 return self.key
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
364
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
365 # TODO: set up a separate index db file for this? profile?
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
366 def lookup(self, keyvalue):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
367 """Locate a particular node by its key property and return its id.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
368
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
369 If this class has no key property, a TypeError is raised. If the
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
370 'keyvalue' matches one of the values for the key property among
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
371 the nodes in this class, the matching node's id is returned;
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
372 otherwise a KeyError is raised.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
373 """
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
374 cldb = self.db.getclassdb(self.classname)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
375 for nodeid in self.db.getnodeids(self.classname, cldb):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
376 node = self.db.getnode(self.classname, nodeid, cldb)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
377 if node.has_key(self.db.RETIRED_FLAG):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
378 continue
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
379 if node[self.key] == keyvalue:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
380 return nodeid
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
381 cldb.close()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
382 raise KeyError, keyvalue
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
383
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
384 # XXX: change from spec - allows multiple props to match
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
385 def find(self, **propspec):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
386 """Get the ids of nodes in this class which link to a given node.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
387
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
388 'propspec' consists of keyword args propname=nodeid
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
389 'propname' must be the name of a property in this class, or a
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
390 KeyError is raised. That property must be a Link or Multilink
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
391 property, or a TypeError is raised.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
392
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
393 'nodeid' must be the id of an existing node in the class linked
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
394 to by the given property, or an IndexError is raised.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
395 """
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
396 propspec = propspec.items()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
397 for propname, nodeid in propspec:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
398 nodeid = str(nodeid)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
399 # check the prop is OK
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
400 prop = self.properties[propname]
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
401 if not prop.isLinkType and not prop.isMultilinkType:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
402 raise TypeError, "'%s' not a Link/Multilink property"%propname
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
403 if not self.db.hasnode(prop.classname, nodeid):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
404 raise ValueError, '%s has no node %s'%(link_class, nodeid)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
405
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
406 # ok, now do the find
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
407 cldb = self.db.getclassdb(self.classname)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
408 l = []
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
409 for id in self.db.getnodeids(self.classname, cldb):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
410 node = self.db.getnode(self.classname, id, cldb)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
411 if node.has_key(self.db.RETIRED_FLAG):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
412 continue
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
413 for propname, nodeid in propspec:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
414 nodeid = str(nodeid)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
415 property = node[propname]
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
416 if prop.isLinkType and nodeid == property:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
417 l.append(id)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
418 elif prop.isMultilinkType and nodeid in property:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
419 l.append(id)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
420 cldb.close()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
421 return l
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
422
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
423 def stringFind(self, **requirements):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
424 """Locate a particular node by matching a set of its String properties.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
425
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
426 If the property is not a String property, a TypeError is raised.
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
427
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
428 The return is a list of the id of all nodes that match.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
429 """
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
430 for propname in requirements.keys():
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
431 prop = self.properties[propname]
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
432 if not prop.isStringType:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
433 raise TypeError, "'%s' not a String property"%propname
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
434 l = []
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
435 cldb = self.db.getclassdb(self.classname)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
436 for nodeid in self.db.getnodeids(self.classname, cldb):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
437 node = self.db.getnode(self.classname, nodeid, cldb)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
438 if node.has_key(self.db.RETIRED_FLAG):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
439 continue
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
440 for key, value in requirements.items():
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
441 if node[key] != value:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
442 break
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
443 else:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
444 l.append(nodeid)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
445 cldb.close()
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
446 return l
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
447
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
448 def list(self):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
449 """Return a list of the ids of the active nodes in this class."""
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
450 l = []
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
451 cn = self.classname
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
452 cldb = self.db.getclassdb(cn)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
453 for nodeid in self.db.getnodeids(cn, cldb):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
454 node = self.db.getnode(cn, nodeid, cldb)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
455 if node.has_key(self.db.RETIRED_FLAG):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
456 continue
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
457 l.append(nodeid)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
458 l.sort()
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
459 cldb.close()
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
460 return l
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
461
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
462 # XXX not in spec
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
463 def filter(self, filterspec, sort, group, num_re = re.compile('^\d+$')):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
464 ''' Return a list of the ids of the active nodes in this class that
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
465 match the 'filter' spec, sorted by the group spec and then the
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
466 sort spec
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
467 '''
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
468 cn = self.classname
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
469
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
470 # optimise filterspec
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
471 l = []
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
472 props = self.getprops()
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
473 for k, v in filterspec.items():
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
474 propclass = props[k]
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
475 if propclass.isLinkType:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
476 if type(v) is not type([]):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
477 v = [v]
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
478 # replace key values with node ids
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
479 u = []
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
480 link_class = self.db.classes[propclass.classname]
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
481 for entry in v:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
482 if not num_re.match(entry):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
483 try:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
484 entry = link_class.lookup(entry)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
485 except:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
486 raise ValueError, 'new property "%s": %s not a %s'%(
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
487 k, entry, self.properties[k].classname)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
488 u.append(entry)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
489
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
490 l.append((0, k, u))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
491 elif propclass.isMultilinkType:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
492 if type(v) is not type([]):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
493 v = [v]
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
494 # replace key values with node ids
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
495 u = []
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
496 link_class = self.db.classes[propclass.classname]
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
497 for entry in v:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
498 if not num_re.match(entry):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
499 try:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
500 entry = link_class.lookup(entry)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
501 except:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
502 raise ValueError, 'new property "%s": %s not a %s'%(
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
503 k, entry, self.properties[k].classname)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
504 u.append(entry)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
505 l.append((1, k, u))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
506 elif propclass.isStringType:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
507 v = v[0]
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
508 if '*' in v or '?' in v:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
509 # simple glob searching
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
510 v = v.replace('?', '.')
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
511 v = v.replace('*', '.*?')
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
512 v = re.compile(v)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
513 l.append((2, k, v))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
514 elif v[0] == '^':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
515 # start-anchored
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
516 if v[-1] == '$':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
517 # _and_ end-anchored
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
518 l.append((6, k, v[1:-1]))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
519 l.append((3, k, v[1:]))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
520 elif v[-1] == '$':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
521 # end-anchored
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
522 l.append((4, k, v[:-1]))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
523 else:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
524 # substring
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
525 l.append((5, k, v))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
526 else:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
527 l.append((6, k, v))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
528 filterspec = l
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
529
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
530 # now, find all the nodes that are active and pass filtering
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
531 l = []
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
532 cldb = self.db.getclassdb(cn)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
533 for nodeid in self.db.getnodeids(cn, cldb):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
534 node = self.db.getnode(cn, nodeid, cldb)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
535 if node.has_key(self.db.RETIRED_FLAG):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
536 continue
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
537 # apply filter
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
538 for t, k, v in filterspec:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
539 if t == 0 and node[k] not in v:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
540 # link - if this node'd property doesn't appear in the
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
541 # filterspec's nodeid list, skip it
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
542 break
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
543 elif t == 1:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
544 # multilink - if any of the nodeids required by the
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
545 # filterspec aren't in this node's property, then skip
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
546 # it
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
547 for value in v:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
548 if value not in node[k]:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
549 break
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
550 else:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
551 continue
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
552 break
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
553 elif t == 2 and not v.search(node[k]):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
554 # RE search
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
555 break
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
556 elif t == 3 and node[k][:len(v)] != v:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
557 # start anchored
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
558 break
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
559 elif t == 4 and node[k][-len(v):] != v:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
560 # end anchored
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
561 break
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
562 elif t == 5 and node[k].find(v) == -1:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
563 # substring search
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
564 break
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
565 elif t == 6 and node[k] != v:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
566 # straight value comparison for the other types
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
567 break
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
568 else:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
569 l.append((nodeid, node))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
570 l.sort()
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
571 cldb.close()
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
572
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
573 # optimise sort
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
574 m = []
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
575 for entry in sort:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
576 if entry[0] != '-':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
577 m.append(('+', entry))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
578 else:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
579 m.append((entry[0], entry[1:]))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
580 sort = m
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
581
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
582 # optimise group
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
583 m = []
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
584 for entry in group:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
585 if entry[0] != '-':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
586 m.append(('+', entry))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
587 else:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
588 m.append((entry[0], entry[1:]))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
589 group = m
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
590
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
591 # now, sort the result
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
592 def sortfun(a, b, sort=sort, group=group, properties=self.getprops(),
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
593 db = self.db, cl=self):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
594 a_id, an = a
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
595 b_id, bn = b
86
b89712288636 just some comments
Richard Jones <richard@users.sourceforge.net>
parents: 26
diff changeset
596 # sort by group and then sort
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
597 for list in group, sort:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
598 for dir, prop in list:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
599 # handle the properties that might be "faked"
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
600 if not an.has_key(prop):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
601 an[prop] = cl.get(a_id, prop)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
602 av = an[prop]
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
603 if not bn.has_key(prop):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
604 bn[prop] = cl.get(b_id, prop)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
605 bv = bn[prop]
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
606
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
607 # sorting is class-specific
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
608 propclass = properties[prop]
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
609
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
610 # String and Date values are sorted in the natural way
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
611 if propclass.isStringType:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
612 # clean up the strings
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
613 if av and av[0] in string.uppercase:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
614 av = an[prop] = av.lower()
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
615 if bv and bv[0] in string.uppercase:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
616 bv = bn[prop] = bv.lower()
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
617 if propclass.isStringType or propclass.isDateType:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
618 if dir == '+':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
619 r = cmp(av, bv)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
620 if r != 0: return r
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
621 elif dir == '-':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
622 r = cmp(bv, av)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
623 if r != 0: return r
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
624
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
625 # Link properties are sorted according to the value of
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
626 # the "order" property on the linked nodes if it is
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
627 # present; or otherwise on the key string of the linked
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
628 # nodes; or finally on the node ids.
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
629 elif propclass.isLinkType:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
630 link = db.classes[propclass.classname]
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
631 if link.getprops().has_key('order'):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
632 if dir == '+':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
633 r = cmp(link.get(av, 'order'),
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
634 link.get(bv, 'order'))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
635 if r != 0: return r
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
636 elif dir == '-':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
637 r = cmp(link.get(bv, 'order'),
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
638 link.get(av, 'order'))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
639 if r != 0: return r
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
640 elif link.getkey():
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
641 key = link.getkey()
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
642 if dir == '+':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
643 r = cmp(link.get(av, key), link.get(bv, key))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
644 if r != 0: return r
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
645 elif dir == '-':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
646 r = cmp(link.get(bv, key), link.get(av, key))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
647 if r != 0: return r
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
648 else:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
649 if dir == '+':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
650 r = cmp(av, bv)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
651 if r != 0: return r
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
652 elif dir == '-':
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
653 r = cmp(bv, av)
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diff changeset
654 if r != 0: return r
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parents:
diff changeset
655
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parents:
diff changeset
656 # Multilink properties are sorted according to how many
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parents:
diff changeset
657 # links are present.
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parents:
diff changeset
658 elif propclass.isMultilinkType:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
659 if dir == '+':
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parents:
diff changeset
660 r = cmp(len(av), len(bv))
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parents:
diff changeset
661 if r != 0: return r
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parents:
diff changeset
662 elif dir == '-':
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parents:
diff changeset
663 r = cmp(len(bv), len(av))
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parents:
diff changeset
664 if r != 0: return r
86
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diff changeset
665 # end for dir, prop in list:
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parents: 26
diff changeset
666 # end for list in sort, group:
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diff changeset
667 # if all else fails, compare the ids
25
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parents:
diff changeset
668 return cmp(a[0], b[0])
86
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parents: 26
diff changeset
669
25
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parents:
diff changeset
670 l.sort(sortfun)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
671 return [i[0] for i in l]
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
672
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
673 def count(self):
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parents:
diff changeset
674 """Get the number of nodes in this class.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
675
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parents:
diff changeset
676 If the returned integer is 'numnodes', the ids of all the nodes
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
677 in this class run from 1 to numnodes, and numnodes+1 will be the
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parents:
diff changeset
678 id of the next node to be created in this class.
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parents:
diff changeset
679 """
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parents:
diff changeset
680 return self.db.countnodes(self.classname)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
681
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parents:
diff changeset
682 # Manipulating properties:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
683
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
684 def getprops(self):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
685 """Return a dictionary mapping property names to property objects."""
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
686 return self.properties
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
687
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
688 def addprop(self, **properties):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
689 """Add properties to this class.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
690
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
691 The keyword arguments in 'properties' must map names to property
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
692 objects, or a TypeError is raised. None of the keys in 'properties'
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
693 may collide with the names of existing properties, or a ValueError
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
694 is raised before any properties have been added.
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
695 """
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
696 for key in properties.keys():
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
697 if self.properties.has_key(key):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
698 raise ValueError, key
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
699 self.properties.update(properties)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
700
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
701
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
702 # XXX not in spec
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
703 class Node:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
704 ''' A convenience wrapper for the given node
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
705 '''
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
706 def __init__(self, cl, nodeid):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
707 self.__dict__['cl'] = cl
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
708 self.__dict__['nodeid'] = nodeid
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
709 def keys(self):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
710 return self.cl.getprops().keys()
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
711 def has_key(self, name):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
712 return self.cl.getprops().has_key(name)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
713 def __getattr__(self, name):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
714 if self.__dict__.has_key(name):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
715 return self.__dict__['name']
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
716 try:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
717 return self.cl.get(self.nodeid, name)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
718 except KeyError, value:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
719 raise AttributeError, str(value)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
720 def __getitem__(self, name):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
721 return self.cl.get(self.nodeid, name)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
722 def __setattr__(self, name, value):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
723 try:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
724 return self.cl.set(self.nodeid, **{name: value})
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
725 except KeyError, value:
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
726 raise AttributeError, str(value)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
727 def __setitem__(self, name, value):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
728 self.cl.set(self.nodeid, **{name: value})
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
729 def history(self):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
730 return self.cl.history(self.nodeid)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
731 def retire(self):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
732 return self.cl.retire(self.nodeid)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
733
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
734
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
735 def Choice(name, *options):
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
736 cl = Class(db, name, name=hyperdb.String(), order=hyperdb.String())
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
737 for i in range(len(options)):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
738 cl.create(name=option[i], order=i)
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
739 return hyperdb.Link(name)
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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 #
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
742 # $Log: not supported by cvs2svn $
86
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parents: 26
diff changeset
743 # Revision 1.2 2001/07/22 12:09:32 richard
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parents: 26
diff changeset
744 # Final commit of Grande Splite
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Richard Jones <richard@users.sourceforge.net>
parents: 26
diff changeset
745 #
26
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parents: 25
diff changeset
746 # Revision 1.1 2001/07/22 11:58:35 richard
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parents: 25
diff changeset
747 # More Grande Splite
25
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
748 #
Roundup Issue Tracker: http://roundup-tracker.org/