Mercurial > p > roundup > code
annotate roundup/backends/rdbms_common.py @ 1528:96cd422532ef
bye bye gadfly - you served your purpose well [SF#701127]
| author | Richard Jones <richard@users.sourceforge.net> |
|---|---|
| date | Tue, 18 Mar 2003 00:50:24 +0000 |
| parents | 63aa7be52d2c |
| children | 800b5896e14a |
| rev | line source |
|---|---|
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1 # $Id: rdbms_common.py,v 1.46 2003-03-18 00:50:24 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.) |
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22 ''' |
| 1165 | 23 |
| 24 # standard python modules | |
| 25 import sys, os, time, re, errno, weakref, copy | |
| 26 | |
| 27 # roundup modules | |
| 28 from roundup import hyperdb, date, password, roundupdb, security | |
| 29 from roundup.hyperdb import String, Password, Date, Interval, Link, \ | |
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30 Multilink, DatabaseError, Boolean, Number, Node |
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31 from roundup.backends import locking |
| 1165 | 32 |
| 33 # support | |
| 34 from blobfiles import FileStorage | |
| 35 from roundup.indexer import Indexer | |
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36 from sessions import Sessions, OneTimeKeys |
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37 from roundup.date import Range |
| 1165 | 38 |
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39 # number of rows to keep in memory |
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40 ROW_CACHE_SIZE = 100 |
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41 |
| 1165 | 42 class Database(FileStorage, hyperdb.Database, roundupdb.Database): |
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43 ''' Wrapper around an SQL database that presents a hyperdb interface. |
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44 |
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45 - some functionality is specific to the actual SQL database, hence |
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46 the sql_* methods that are NotImplemented |
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47 - we keep a cache of the latest ROW_CACHE_SIZE row fetches. |
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48 ''' |
| 1165 | 49 def __init__(self, config, journaltag=None): |
| 50 ''' Open the database and load the schema from it. | |
| 51 ''' | |
| 52 self.config, self.journaltag = config, journaltag | |
| 53 self.dir = config.DATABASE | |
| 54 self.classes = {} | |
| 55 self.indexer = Indexer(self.dir) | |
| 56 self.sessions = Sessions(self.config) | |
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57 self.otks = OneTimeKeys(self.config) |
| 1165 | 58 self.security = security.Security(self) |
| 59 | |
| 60 # additional transaction support for external files and the like | |
| 61 self.transactions = [] | |
| 62 | |
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63 # keep a cache of the N most recently retrieved rows of any kind |
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64 # (classname, nodeid) = row |
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65 self.cache = {} |
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66 self.cache_lru = [] |
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67 |
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68 # database lock |
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69 self.lockfile = None |
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70 |
| 1165 | 71 # open a connection to the database, creating the "conn" attribute |
| 72 self.open_connection() | |
| 73 | |
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74 def clearCache(self): |
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75 self.cache = {} |
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76 self.cache_lru = [] |
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77 |
| 1165 | 78 def open_connection(self): |
| 79 ''' Open a connection to the database, creating it if necessary | |
| 80 ''' | |
| 81 raise NotImplemented | |
| 82 | |
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83 def sql(self, sql, args=None): |
| 1165 | 84 ''' Execute the sql with the optional args. |
| 85 ''' | |
| 86 if __debug__: | |
| 87 print >>hyperdb.DEBUG, (self, sql, args) | |
| 88 if args: | |
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89 self.cursor.execute(sql, args) |
| 1165 | 90 else: |
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91 self.cursor.execute(sql) |
| 1165 | 92 |
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93 def sql_fetchone(self): |
| 1165 | 94 ''' Fetch a single row. If there's nothing to fetch, return None. |
| 95 ''' | |
| 96 raise NotImplemented | |
| 97 | |
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98 def sql_stringquote(self, value): |
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99 ''' Quote the string so it's safe to put in the 'sql quotes' |
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100 ''' |
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101 return re.sub("'", "''", str(value)) |
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102 |
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103 def save_dbschema(self, schema): |
| 1165 | 104 ''' Save the schema definition that the database currently implements |
| 105 ''' | |
| 106 raise NotImplemented | |
| 107 | |
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108 def load_dbschema(self): |
| 1165 | 109 ''' Load the schema definition that the database currently implements |
| 110 ''' | |
| 111 raise NotImplemented | |
| 112 | |
| 113 def post_init(self): | |
| 114 ''' Called once the schema initialisation has finished. | |
| 115 | |
| 116 We should now confirm that the schema defined by our "classes" | |
| 117 attribute actually matches the schema in the database. | |
| 118 ''' | |
| 119 # now detect changes in the schema | |
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120 save = 0 |
| 1165 | 121 for classname, spec in self.classes.items(): |
| 122 if self.database_schema.has_key(classname): | |
| 123 dbspec = self.database_schema[classname] | |
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124 if self.update_class(spec, dbspec): |
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125 self.database_schema[classname] = spec.schema() |
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126 save = 1 |
| 1165 | 127 else: |
| 128 self.create_class(spec) | |
| 129 self.database_schema[classname] = spec.schema() | |
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130 save = 1 |
| 1165 | 131 |
| 132 for classname in self.database_schema.keys(): | |
| 133 if not self.classes.has_key(classname): | |
| 134 self.drop_class(classname) | |
| 135 | |
| 136 # update the database version of the schema | |
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137 if save: |
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138 self.sql('delete from schema') |
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139 self.save_dbschema(self.database_schema) |
| 1165 | 140 |
| 141 # reindex the db if necessary | |
| 142 if self.indexer.should_reindex(): | |
| 143 self.reindex() | |
| 144 | |
| 145 # commit | |
| 146 self.conn.commit() | |
| 147 | |
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148 # figure the "curuserid" |
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149 if self.journaltag is None: |
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150 self.curuserid = None |
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151 elif self.journaltag == 'admin': |
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152 # admin user may not exist, but always has ID 1 |
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153 self.curuserid = '1' |
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154 else: |
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155 self.curuserid = self.user.lookup(self.journaltag) |
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156 |
| 1165 | 157 def reindex(self): |
| 158 for klass in self.classes.values(): | |
| 159 for nodeid in klass.list(): | |
| 160 klass.index(nodeid) | |
| 161 self.indexer.save_index() | |
| 162 | |
| 163 def determine_columns(self, properties): | |
| 164 ''' Figure the column names and multilink properties from the spec | |
| 165 | |
| 166 "properties" is a list of (name, prop) where prop may be an | |
| 167 instance of a hyperdb "type" _or_ a string repr of that type. | |
| 168 ''' | |
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169 cols = ['_activity', '_creator', '_creation'] |
| 1165 | 170 mls = [] |
| 171 # add the multilinks separately | |
| 172 for col, prop in properties: | |
| 173 if isinstance(prop, Multilink): | |
| 174 mls.append(col) | |
| 175 elif isinstance(prop, type('')) and prop.find('Multilink') != -1: | |
| 176 mls.append(col) | |
| 177 else: | |
| 178 cols.append('_'+col) | |
| 179 cols.sort() | |
| 180 return cols, mls | |
| 181 | |
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182 def update_class(self, spec, old_spec): |
| 1165 | 183 ''' Determine the differences between the current spec and the |
| 184 database version of the spec, and update where necessary | |
| 185 ''' | |
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186 new_spec = spec |
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187 new_has = new_spec.properties.has_key |
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188 |
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189 new_spec = new_spec.schema() |
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190 new_spec[1].sort() |
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191 old_spec[1].sort() |
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192 if new_spec == old_spec: |
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193 # no changes |
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194 return 0 |
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195 |
| 1165 | 196 if __debug__: |
| 197 print >>hyperdb.DEBUG, 'update_class FIRING' | |
| 198 | |
| 199 # key property changed? | |
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200 if old_spec[0] != new_spec[0]: |
| 1165 | 201 if __debug__: |
| 202 print >>hyperdb.DEBUG, 'update_class setting keyprop', `spec[0]` | |
| 203 # XXX turn on indexing for the key property | |
| 204 | |
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205 # detect multilinks that have been removed, and drop their table |
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206 old_has = {} |
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207 for name,prop in old_spec[1]: |
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208 old_has[name] = 1 |
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209 if not new_has(name) and isinstance(prop, Multilink): |
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210 # it's a multilink, and it's been removed - drop the old |
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211 # table |
| 1165 | 212 sql = 'drop table %s_%s'%(spec.classname, prop) |
| 213 if __debug__: | |
| 214 print >>hyperdb.DEBUG, 'update_class', (self, sql) | |
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215 self.cursor.execute(sql) |
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216 continue |
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217 old_has = old_has.has_key |
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218 |
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219 # now figure how we populate the new table |
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220 fetch = ['_activity', '_creation', '_creator'] |
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221 properties = spec.getprops() |
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222 for propname,x in new_spec[1]: |
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223 prop = properties[propname] |
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224 if isinstance(prop, Multilink): |
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225 if not old_has(propname): |
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226 # we need to create the new table |
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227 self.create_multilink_table(spec, propname) |
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228 elif old_has(propname): |
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229 # we copy this col over from the old table |
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230 fetch.append('_'+propname) |
| 1165 | 231 |
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232 # select the data out of the old table |
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233 fetch.append('id') |
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234 fetch.append('__retired__') |
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235 fetchcols = ','.join(fetch) |
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236 cn = spec.classname |
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237 sql = 'select %s from _%s'%(fetchcols, cn) |
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238 if __debug__: |
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239 print >>hyperdb.DEBUG, 'update_class', (self, sql) |
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240 self.cursor.execute(sql) |
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241 olddata = self.cursor.fetchall() |
| 1165 | 242 |
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243 # drop the old table |
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244 self.cursor.execute('drop table _%s'%cn) |
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245 |
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246 # create the new table |
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247 self.create_class_table(spec) |
| 1165 | 248 |
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249 if olddata: |
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250 # do the insert |
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251 args = ','.join([self.arg for x in fetch]) |
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252 sql = 'insert into _%s (%s) values (%s)'%(cn, fetchcols, args) |
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253 if __debug__: |
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254 print >>hyperdb.DEBUG, 'update_class', (self, sql, olddata[0]) |
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255 for entry in olddata: |
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256 self.cursor.execute(sql, tuple(entry)) |
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257 |
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258 return 1 |
| 1165 | 259 |
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260 def create_class_table(self, spec): |
| 1165 | 261 ''' create the class table for the given spec |
| 262 ''' | |
| 263 cols, mls = self.determine_columns(spec.properties.items()) | |
| 264 | |
| 265 # add on our special columns | |
| 266 cols.append('id') | |
| 267 cols.append('__retired__') | |
| 268 | |
| 269 # create the base table | |
| 270 scols = ','.join(['%s varchar'%x for x in cols]) | |
| 271 sql = 'create table _%s (%s)'%(spec.classname, scols) | |
| 272 if __debug__: | |
| 273 print >>hyperdb.DEBUG, 'create_class', (self, sql) | |
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274 self.cursor.execute(sql) |
| 1165 | 275 |
| 276 return cols, mls | |
| 277 | |
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278 def create_journal_table(self, spec): |
| 1165 | 279 ''' create the journal table for a class given the spec and |
| 280 already-determined cols | |
| 281 ''' | |
| 282 # journal table | |
| 283 cols = ','.join(['%s varchar'%x | |
| 284 for x in 'nodeid date tag action params'.split()]) | |
| 285 sql = 'create table %s__journal (%s)'%(spec.classname, cols) | |
| 286 if __debug__: | |
| 287 print >>hyperdb.DEBUG, 'create_class', (self, sql) | |
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288 self.cursor.execute(sql) |
| 1165 | 289 |
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290 def create_multilink_table(self, spec, ml): |
| 1165 | 291 ''' Create a multilink table for the "ml" property of the class |
| 292 given by the spec | |
| 293 ''' | |
| 294 sql = 'create table %s_%s (linkid varchar, nodeid varchar)'%( | |
| 295 spec.classname, ml) | |
| 296 if __debug__: | |
| 297 print >>hyperdb.DEBUG, 'create_class', (self, sql) | |
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298 self.cursor.execute(sql) |
| 1165 | 299 |
| 300 def create_class(self, spec): | |
| 301 ''' Create a database table according to the given spec. | |
| 302 ''' | |
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303 cols, mls = self.create_class_table(spec) |
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304 self.create_journal_table(spec) |
| 1165 | 305 |
| 306 # now create the multilink tables | |
| 307 for ml in mls: | |
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308 self.create_multilink_table(spec, ml) |
| 1165 | 309 |
| 310 # ID counter | |
| 311 sql = 'insert into ids (name, num) values (%s,%s)'%(self.arg, self.arg) | |
| 312 vals = (spec.classname, 1) | |
| 313 if __debug__: | |
| 314 print >>hyperdb.DEBUG, 'create_class', (self, sql, vals) | |
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315 self.cursor.execute(sql, vals) |
| 1165 | 316 |
| 317 def drop_class(self, spec): | |
| 318 ''' Drop the given table from the database. | |
| 319 | |
| 320 Drop the journal and multilink tables too. | |
| 321 ''' | |
| 322 # figure the multilinks | |
| 323 mls = [] | |
| 324 for col, prop in spec.properties.items(): | |
| 325 if isinstance(prop, Multilink): | |
| 326 mls.append(col) | |
| 327 | |
| 328 sql = 'drop table _%s'%spec.classname | |
| 329 if __debug__: | |
| 330 print >>hyperdb.DEBUG, 'drop_class', (self, sql) | |
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331 self.cursor.execute(sql) |
| 1165 | 332 |
| 333 sql = 'drop table %s__journal'%spec.classname | |
| 334 if __debug__: | |
| 335 print >>hyperdb.DEBUG, 'drop_class', (self, sql) | |
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336 self.cursor.execute(sql) |
| 1165 | 337 |
| 338 for ml in mls: | |
| 339 sql = 'drop table %s_%s'%(spec.classname, ml) | |
| 340 if __debug__: | |
| 341 print >>hyperdb.DEBUG, 'drop_class', (self, sql) | |
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342 self.cursor.execute(sql) |
| 1165 | 343 |
| 344 # | |
| 345 # Classes | |
| 346 # | |
| 347 def __getattr__(self, classname): | |
| 348 ''' A convenient way of calling self.getclass(classname). | |
| 349 ''' | |
| 350 if self.classes.has_key(classname): | |
| 351 if __debug__: | |
| 352 print >>hyperdb.DEBUG, '__getattr__', (self, classname) | |
| 353 return self.classes[classname] | |
| 354 raise AttributeError, classname | |
| 355 | |
| 356 def addclass(self, cl): | |
| 357 ''' Add a Class to the hyperdatabase. | |
| 358 ''' | |
| 359 if __debug__: | |
| 360 print >>hyperdb.DEBUG, 'addclass', (self, cl) | |
| 361 cn = cl.classname | |
| 362 if self.classes.has_key(cn): | |
| 363 raise ValueError, cn | |
| 364 self.classes[cn] = cl | |
| 365 | |
| 366 def getclasses(self): | |
| 367 ''' Return a list of the names of all existing classes. | |
| 368 ''' | |
| 369 if __debug__: | |
| 370 print >>hyperdb.DEBUG, 'getclasses', (self,) | |
| 371 l = self.classes.keys() | |
| 372 l.sort() | |
| 373 return l | |
| 374 | |
| 375 def getclass(self, classname): | |
| 376 '''Get the Class object representing a particular class. | |
| 377 | |
| 378 If 'classname' is not a valid class name, a KeyError is raised. | |
| 379 ''' | |
| 380 if __debug__: | |
| 381 print >>hyperdb.DEBUG, 'getclass', (self, classname) | |
| 382 try: | |
| 383 return self.classes[classname] | |
| 384 except KeyError: | |
| 385 raise KeyError, 'There is no class called "%s"'%classname | |
| 386 | |
| 387 def clear(self): | |
| 388 ''' Delete all database contents. | |
| 389 | |
| 390 Note: I don't commit here, which is different behaviour to the | |
| 391 "nuke from orbit" behaviour in the *dbms. | |
| 392 ''' | |
| 393 if __debug__: | |
| 394 print >>hyperdb.DEBUG, 'clear', (self,) | |
| 395 for cn in self.classes.keys(): | |
| 396 sql = 'delete from _%s'%cn | |
| 397 if __debug__: | |
| 398 print >>hyperdb.DEBUG, 'clear', (self, sql) | |
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399 self.cursor.execute(sql) |
| 1165 | 400 |
| 401 # | |
| 402 # Node IDs | |
| 403 # | |
| 404 def newid(self, classname): | |
| 405 ''' Generate a new id for the given class | |
| 406 ''' | |
| 407 # get the next ID | |
| 408 sql = 'select num from ids where name=%s'%self.arg | |
| 409 if __debug__: | |
| 410 print >>hyperdb.DEBUG, 'newid', (self, sql, classname) | |
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411 self.cursor.execute(sql, (classname, )) |
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412 newid = self.cursor.fetchone()[0] |
| 1165 | 413 |
| 414 # update the counter | |
| 415 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg) | |
| 416 vals = (int(newid)+1, classname) | |
| 417 if __debug__: | |
| 418 print >>hyperdb.DEBUG, 'newid', (self, sql, vals) | |
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419 self.cursor.execute(sql, vals) |
| 1165 | 420 |
| 421 # return as string | |
| 422 return str(newid) | |
| 423 | |
| 424 def setid(self, classname, setid): | |
| 425 ''' Set the id counter: used during import of database | |
| 426 ''' | |
| 427 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg) | |
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428 vals = (setid, classname) |
| 1165 | 429 if __debug__: |
| 430 print >>hyperdb.DEBUG, 'setid', (self, sql, vals) | |
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431 self.cursor.execute(sql, vals) |
| 1165 | 432 |
| 433 # | |
| 434 # Nodes | |
| 435 # | |
| 436 def addnode(self, classname, nodeid, node): | |
| 437 ''' Add the specified node to its class's db. | |
| 438 ''' | |
| 439 if __debug__: | |
| 440 print >>hyperdb.DEBUG, 'addnode', (self, classname, nodeid, node) | |
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441 |
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442 # determine the column definitions and multilink tables |
| 1165 | 443 cl = self.classes[classname] |
| 444 cols, mls = self.determine_columns(cl.properties.items()) | |
| 445 | |
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446 # we'll be supplied these props if we're doing an import |
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447 if not node.has_key('creator'): |
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448 # add in the "calculated" properties (dupe so we don't affect |
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449 # calling code's node assumptions) |
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450 node = node.copy() |
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451 node['creation'] = node['activity'] = date.Date() |
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452 node['creator'] = self.curuserid |
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453 |
| 1165 | 454 # default the non-multilink columns |
| 455 for col, prop in cl.properties.items(): | |
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456 if not node.has_key(col): |
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457 if isinstance(prop, Multilink): |
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458 node[col] = [] |
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459 else: |
| 1165 | 460 node[col] = None |
| 461 | |
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462 # clear this node out of the cache if it's in there |
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463 key = (classname, nodeid) |
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464 if self.cache.has_key(key): |
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465 del self.cache[key] |
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466 self.cache_lru.remove(key) |
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467 |
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468 # make the node data safe for the DB |
| 1165 | 469 node = self.serialise(classname, node) |
| 470 | |
| 471 # make sure the ordering is correct for column name -> column value | |
| 472 vals = tuple([node[col[1:]] for col in cols]) + (nodeid, 0) | |
| 473 s = ','.join([self.arg for x in cols]) + ',%s,%s'%(self.arg, self.arg) | |
| 474 cols = ','.join(cols) + ',id,__retired__' | |
| 475 | |
| 476 # perform the inserts | |
| 477 sql = 'insert into _%s (%s) values (%s)'%(classname, cols, s) | |
| 478 if __debug__: | |
| 479 print >>hyperdb.DEBUG, 'addnode', (self, sql, vals) | |
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480 self.cursor.execute(sql, vals) |
| 1165 | 481 |
| 482 # insert the multilink rows | |
| 483 for col in mls: | |
| 484 t = '%s_%s'%(classname, col) | |
| 485 for entry in node[col]: | |
| 486 sql = 'insert into %s (linkid, nodeid) values (%s,%s)'%(t, | |
| 487 self.arg, self.arg) | |
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488 self.sql(sql, (entry, nodeid)) |
| 1165 | 489 |
| 490 # make sure we do the commit-time extra stuff for this node | |
| 491 self.transactions.append((self.doSaveNode, (classname, nodeid, node))) | |
| 492 | |
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493 def setnode(self, classname, nodeid, values, multilink_changes): |
| 1165 | 494 ''' Change the specified node. |
| 495 ''' | |
| 496 if __debug__: | |
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497 print >>hyperdb.DEBUG, 'setnode', (self, classname, nodeid, values) |
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498 |
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499 # clear this node out of the cache if it's in there |
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500 key = (classname, nodeid) |
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501 if self.cache.has_key(key): |
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502 del self.cache[key] |
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503 self.cache_lru.remove(key) |
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504 |
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505 # add the special props |
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506 values = values.copy() |
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507 values['activity'] = date.Date() |
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508 |
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509 # make db-friendly |
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510 values = self.serialise(classname, values) |
| 1165 | 511 |
| 512 cl = self.classes[classname] | |
| 513 cols = [] | |
| 514 mls = [] | |
| 515 # add the multilinks separately | |
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516 props = cl.getprops() |
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517 for col in values.keys(): |
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518 prop = props[col] |
| 1165 | 519 if isinstance(prop, Multilink): |
| 520 mls.append(col) | |
| 521 else: | |
| 522 cols.append('_'+col) | |
| 523 cols.sort() | |
| 524 | |
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525 # if there's any updates to regular columns, do them |
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526 if cols: |
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527 # make sure the ordering is correct for column name -> column value |
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528 sqlvals = tuple([values[col[1:]] for col in cols]) + (nodeid,) |
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529 s = ','.join(['%s=%s'%(x, self.arg) for x in cols]) |
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530 cols = ','.join(cols) |
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531 |
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532 # perform the update |
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533 sql = 'update _%s set %s where id=%s'%(classname, s, self.arg) |
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534 if __debug__: |
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535 print >>hyperdb.DEBUG, 'setnode', (self, sql, sqlvals) |
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536 self.cursor.execute(sql, sqlvals) |
| 1165 | 537 |
| 538 # now the fun bit, updating the multilinks ;) | |
| 539 for col, (add, remove) in multilink_changes.items(): | |
| 540 tn = '%s_%s'%(classname, col) | |
| 541 if add: | |
| 542 sql = 'insert into %s (nodeid, linkid) values (%s,%s)'%(tn, | |
| 543 self.arg, self.arg) | |
| 544 for addid in add: | |
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545 self.sql(sql, (nodeid, addid)) |
| 1165 | 546 if remove: |
| 547 sql = 'delete from %s where nodeid=%s and linkid=%s'%(tn, | |
| 548 self.arg, self.arg) | |
| 549 for removeid in remove: | |
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550 self.sql(sql, (nodeid, removeid)) |
| 1165 | 551 |
| 552 # make sure we do the commit-time extra stuff for this node | |
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553 self.transactions.append((self.doSaveNode, (classname, nodeid, values))) |
| 1165 | 554 |
| 555 def getnode(self, classname, nodeid): | |
| 556 ''' Get a node from the database. | |
| 557 ''' | |
| 558 if __debug__: | |
| 559 print >>hyperdb.DEBUG, 'getnode', (self, classname, nodeid) | |
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560 |
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561 # see if we have this node cached |
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562 key = (classname, nodeid) |
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563 if self.cache.has_key(key): |
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564 # push us back to the top of the LRU |
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565 self.cache_lru.remove(key) |
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566 self.cache_lru.insert(0, key) |
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567 # return the cached information |
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568 return self.cache[key] |
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569 |
| 1165 | 570 # figure the columns we're fetching |
| 571 cl = self.classes[classname] | |
| 572 cols, mls = self.determine_columns(cl.properties.items()) | |
| 573 scols = ','.join(cols) | |
| 574 | |
| 575 # perform the basic property fetch | |
| 576 sql = 'select %s from _%s where id=%s'%(scols, classname, self.arg) | |
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577 self.sql(sql, (nodeid,)) |
| 1165 | 578 |
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579 values = self.sql_fetchone() |
| 1165 | 580 if values is None: |
| 581 raise IndexError, 'no such %s node %s'%(classname, nodeid) | |
| 582 | |
| 583 # make up the node | |
| 584 node = {} | |
| 585 for col in range(len(cols)): | |
| 586 node[cols[col][1:]] = values[col] | |
| 587 | |
| 588 # now the multilinks | |
| 589 for col in mls: | |
| 590 # get the link ids | |
| 591 sql = 'select linkid from %s_%s where nodeid=%s'%(classname, col, | |
| 592 self.arg) | |
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593 self.cursor.execute(sql, (nodeid,)) |
| 1165 | 594 # extract the first column from the result |
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595 node[col] = [x[0] for x in self.cursor.fetchall()] |
| 1165 | 596 |
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597 # un-dbificate the node data |
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598 node = self.unserialise(classname, node) |
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599 |
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600 # save off in the cache |
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601 key = (classname, nodeid) |
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602 self.cache[key] = node |
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603 # update the LRU |
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604 self.cache_lru.insert(0, key) |
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605 if len(self.cache_lru) > ROW_CACHE_SIZE: |
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606 del self.cache[self.cache_lru.pop()] |
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607 |
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608 return node |
| 1165 | 609 |
| 610 def destroynode(self, classname, nodeid): | |
| 611 '''Remove a node from the database. Called exclusively by the | |
| 612 destroy() method on Class. | |
| 613 ''' | |
| 614 if __debug__: | |
| 615 print >>hyperdb.DEBUG, 'destroynode', (self, classname, nodeid) | |
| 616 | |
| 617 # make sure the node exists | |
| 618 if not self.hasnode(classname, nodeid): | |
| 619 raise IndexError, '%s has no node %s'%(classname, nodeid) | |
| 620 | |
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621 # see if we have this node cached |
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622 if self.cache.has_key((classname, nodeid)): |
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623 del self.cache[(classname, nodeid)] |
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624 |
| 1165 | 625 # see if there's any obvious commit actions that we should get rid of |
| 626 for entry in self.transactions[:]: | |
| 627 if entry[1][:2] == (classname, nodeid): | |
| 628 self.transactions.remove(entry) | |
| 629 | |
| 630 # now do the SQL | |
| 631 sql = 'delete from _%s where id=%s'%(classname, self.arg) | |
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632 self.sql(sql, (nodeid,)) |
| 1165 | 633 |
| 634 # remove from multilnks | |
| 635 cl = self.getclass(classname) | |
| 636 x, mls = self.determine_columns(cl.properties.items()) | |
| 637 for col in mls: | |
| 638 # get the link ids | |
| 639 sql = 'delete from %s_%s where nodeid=%s'%(classname, col, self.arg) | |
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640 self.cursor.execute(sql, (nodeid,)) |
| 1165 | 641 |
| 642 # remove journal entries | |
| 643 sql = 'delete from %s__journal where nodeid=%s'%(classname, self.arg) | |
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644 self.sql(sql, (nodeid,)) |
| 1165 | 645 |
| 646 def serialise(self, classname, node): | |
| 647 '''Copy the node contents, converting non-marshallable data into | |
| 648 marshallable data. | |
| 649 ''' | |
| 650 if __debug__: | |
| 651 print >>hyperdb.DEBUG, 'serialise', classname, node | |
| 652 properties = self.getclass(classname).getprops() | |
| 653 d = {} | |
| 654 for k, v in node.items(): | |
| 655 # if the property doesn't exist, or is the "retired" flag then | |
| 656 # it won't be in the properties dict | |
| 657 if not properties.has_key(k): | |
| 658 d[k] = v | |
| 659 continue | |
| 660 | |
| 661 # get the property spec | |
| 662 prop = properties[k] | |
| 663 | |
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664 if isinstance(prop, Password) and v is not None: |
| 1165 | 665 d[k] = str(v) |
| 666 elif isinstance(prop, Date) and v is not None: | |
| 667 d[k] = v.serialise() | |
| 668 elif isinstance(prop, Interval) and v is not None: | |
| 669 d[k] = v.serialise() | |
| 670 else: | |
| 671 d[k] = v | |
| 672 return d | |
| 673 | |
| 674 def unserialise(self, classname, node): | |
| 675 '''Decode the marshalled node data | |
| 676 ''' | |
| 677 if __debug__: | |
| 678 print >>hyperdb.DEBUG, 'unserialise', classname, node | |
| 679 properties = self.getclass(classname).getprops() | |
| 680 d = {} | |
| 681 for k, v in node.items(): | |
| 682 # if the property doesn't exist, or is the "retired" flag then | |
| 683 # it won't be in the properties dict | |
| 684 if not properties.has_key(k): | |
| 685 d[k] = v | |
| 686 continue | |
| 687 | |
| 688 # get the property spec | |
| 689 prop = properties[k] | |
| 690 | |
| 691 if isinstance(prop, Date) and v is not None: | |
| 692 d[k] = date.Date(v) | |
| 693 elif isinstance(prop, Interval) and v is not None: | |
| 694 d[k] = date.Interval(v) | |
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695 elif isinstance(prop, Password) and v is not None: |
| 1165 | 696 p = password.Password() |
| 697 p.unpack(v) | |
| 698 d[k] = p | |
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699 elif (isinstance(prop, Boolean) or isinstance(prop, Number)) and v is not None: |
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700 d[k]=float(v) |
| 1165 | 701 else: |
| 702 d[k] = v | |
| 703 return d | |
| 704 | |
| 705 def hasnode(self, classname, nodeid): | |
| 706 ''' Determine if the database has a given node. | |
| 707 ''' | |
| 708 sql = 'select count(*) from _%s where id=%s'%(classname, self.arg) | |
| 709 if __debug__: | |
| 710 print >>hyperdb.DEBUG, 'hasnode', (self, sql, nodeid) | |
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711 self.cursor.execute(sql, (nodeid,)) |
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Some speedups - both of the SQL backends can handle using only one cursor.
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changeset
|
712 return int(self.cursor.fetchone()[0]) |
| 1165 | 713 |
| 714 def countnodes(self, classname): | |
| 715 ''' Count the number of nodes that exist for a particular Class. | |
| 716 ''' | |
| 717 sql = 'select count(*) from _%s'%classname | |
| 718 if __debug__: | |
| 719 print >>hyperdb.DEBUG, 'countnodes', (self, sql) | |
|
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changeset
|
720 self.cursor.execute(sql) |
|
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changeset
|
721 return self.cursor.fetchone()[0] |
| 1165 | 722 |
| 723 def addjournal(self, classname, nodeid, action, params, creator=None, | |
| 724 creation=None): | |
| 725 ''' Journal the Action | |
| 726 'action' may be: | |
| 727 | |
| 728 'create' or 'set' -- 'params' is a dictionary of property values | |
| 729 'link' or 'unlink' -- 'params' is (classname, nodeid, propname) | |
| 730 'retire' -- 'params' is None | |
| 731 ''' | |
| 732 # serialise the parameters now if necessary | |
| 733 if isinstance(params, type({})): | |
| 734 if action in ('set', 'create'): | |
| 735 params = self.serialise(classname, params) | |
| 736 | |
| 737 # handle supply of the special journalling parameters (usually | |
| 738 # supplied on importing an existing database) | |
| 739 if creator: | |
| 740 journaltag = creator | |
| 741 else: | |
|
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On second thought, that last checkin was dumb.
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diff
changeset
|
742 journaltag = self.curuserid |
| 1165 | 743 if creation: |
| 744 journaldate = creation.serialise() | |
| 745 else: | |
| 746 journaldate = date.Date().serialise() | |
| 747 | |
| 748 # create the journal entry | |
| 749 cols = ','.join('nodeid date tag action params'.split()) | |
| 750 | |
| 751 if __debug__: | |
| 752 print >>hyperdb.DEBUG, 'addjournal', (nodeid, journaldate, | |
| 753 journaltag, action, params) | |
| 754 | |
|
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parents:
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|
755 self.save_journal(classname, cols, nodeid, journaldate, |
| 1165 | 756 journaltag, action, params) |
| 757 | |
|
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parents:
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diff
changeset
|
758 def save_journal(self, classname, cols, nodeid, journaldate, |
| 1165 | 759 journaltag, action, params): |
| 760 ''' Save the journal entry to the database | |
| 761 ''' | |
| 762 raise NotImplemented | |
| 763 | |
| 764 def getjournal(self, classname, nodeid): | |
| 765 ''' get the journal for id | |
| 766 ''' | |
| 767 # make sure the node exists | |
| 768 if not self.hasnode(classname, nodeid): | |
| 769 raise IndexError, '%s has no node %s'%(classname, nodeid) | |
| 770 | |
| 771 cols = ','.join('nodeid date tag action params'.split()) | |
|
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Some speedups - both of the SQL backends can handle using only one cursor.
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parents:
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|
772 return self.load_journal(classname, cols, nodeid) |
| 1165 | 773 |
|
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Some speedups - both of the SQL backends can handle using only one cursor.
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parents:
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diff
changeset
|
774 def load_journal(self, classname, cols, nodeid): |
| 1165 | 775 ''' Load the journal from the database |
| 776 ''' | |
| 777 raise NotImplemented | |
| 778 | |
| 779 def pack(self, pack_before): | |
| 780 ''' Delete all journal entries except "create" before 'pack_before'. | |
| 781 ''' | |
| 782 # get a 'yyyymmddhhmmss' version of the date | |
| 783 date_stamp = pack_before.serialise() | |
| 784 | |
| 785 # do the delete | |
| 786 for classname in self.classes.keys(): | |
| 787 sql = "delete from %s__journal where date<%s and "\ | |
| 788 "action<>'create'"%(classname, self.arg) | |
| 789 if __debug__: | |
| 790 print >>hyperdb.DEBUG, 'pack', (self, sql, date_stamp) | |
|
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|
791 self.cursor.execute(sql, (date_stamp,)) |
| 1165 | 792 |
| 793 def sql_commit(self): | |
| 794 ''' Actually commit to the database. | |
| 795 ''' | |
| 796 self.conn.commit() | |
| 797 | |
| 798 def commit(self): | |
| 799 ''' Commit the current transactions. | |
| 800 | |
| 801 Save all data changed since the database was opened or since the | |
| 802 last commit() or rollback(). | |
| 803 ''' | |
| 804 if __debug__: | |
| 805 print >>hyperdb.DEBUG, 'commit', (self,) | |
| 806 | |
| 807 # commit the database | |
| 808 self.sql_commit() | |
| 809 | |
| 810 # now, do all the other transaction stuff | |
| 811 reindex = {} | |
| 812 for method, args in self.transactions: | |
| 813 reindex[method(*args)] = 1 | |
| 814 | |
| 815 # reindex the nodes that request it | |
| 816 for classname, nodeid in filter(None, reindex.keys()): | |
| 817 print >>hyperdb.DEBUG, 'commit.reindex', (classname, nodeid) | |
| 818 self.getclass(classname).index(nodeid) | |
| 819 | |
| 820 # save the indexer state | |
| 821 self.indexer.save_index() | |
| 822 | |
| 823 # clear out the transactions | |
| 824 self.transactions = [] | |
| 825 | |
| 826 def rollback(self): | |
| 827 ''' Reverse all actions from the current transaction. | |
| 828 | |
| 829 Undo all the changes made since the database was opened or the last | |
| 830 commit() or rollback() was performed. | |
| 831 ''' | |
| 832 if __debug__: | |
| 833 print >>hyperdb.DEBUG, 'rollback', (self,) | |
| 834 | |
| 835 # roll back | |
| 836 self.conn.rollback() | |
| 837 | |
| 838 # roll back "other" transaction stuff | |
| 839 for method, args in self.transactions: | |
| 840 # delete temporary files | |
| 841 if method == self.doStoreFile: | |
| 842 self.rollbackStoreFile(*args) | |
| 843 self.transactions = [] | |
| 844 | |
|
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fixed sqlite rollback/caching bug [SF#689383]
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845 # clear the cache |
|
2fc7d4a8c9e7
fixed sqlite rollback/caching bug [SF#689383]
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parents:
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846 self.clearCache() |
|
2fc7d4a8c9e7
fixed sqlite rollback/caching bug [SF#689383]
Richard Jones <richard@users.sourceforge.net>
parents:
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diff
changeset
|
847 |
| 1165 | 848 def doSaveNode(self, classname, nodeid, node): |
| 849 ''' dummy that just generates a reindex event | |
| 850 ''' | |
| 851 # return the classname, nodeid so we reindex this content | |
| 852 return (classname, nodeid) | |
| 853 | |
| 854 def close(self): | |
| 855 ''' Close off the connection. | |
| 856 ''' | |
| 857 self.conn.close() | |
|
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|
858 if self.lockfile is not None: |
|
80d27b7d6db5
implemented whole-database locking
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|
859 locking.release_lock(self.lockfile) |
|
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860 if self.lockfile is not None: |
|
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861 self.lockfile.close() |
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862 self.lockfile = None |
| 1165 | 863 |
| 864 # | |
| 865 # The base Class class | |
| 866 # | |
| 867 class Class(hyperdb.Class): | |
| 868 ''' The handle to a particular class of nodes in a hyperdatabase. | |
| 869 | |
| 870 All methods except __repr__ and getnode must be implemented by a | |
| 871 concrete backend Class. | |
| 872 ''' | |
| 873 | |
| 874 def __init__(self, db, classname, **properties): | |
| 875 '''Create a new class with a given name and property specification. | |
| 876 | |
| 877 'classname' must not collide with the name of an existing class, | |
| 878 or a ValueError is raised. The keyword arguments in 'properties' | |
| 879 must map names to property objects, or a TypeError is raised. | |
| 880 ''' | |
| 881 if (properties.has_key('creation') or properties.has_key('activity') | |
| 882 or properties.has_key('creator')): | |
| 883 raise ValueError, '"creation", "activity" and "creator" are '\ | |
| 884 'reserved' | |
| 885 | |
| 886 self.classname = classname | |
| 887 self.properties = properties | |
| 888 self.db = weakref.proxy(db) # use a weak ref to avoid circularity | |
| 889 self.key = '' | |
| 890 | |
| 891 # should we journal changes (default yes) | |
| 892 self.do_journal = 1 | |
| 893 | |
| 894 # do the db-related init stuff | |
| 895 db.addclass(self) | |
| 896 | |
|
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added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
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diff
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897 self.auditors = {'create': [], 'set': [], 'retire': [], 'restore': []} |
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898 self.reactors = {'create': [], 'set': [], 'retire': [], 'restore': []} |
| 1165 | 899 |
| 900 def schema(self): | |
| 901 ''' A dumpable version of the schema that we can store in the | |
| 902 database | |
| 903 ''' | |
| 904 return (self.key, [(x, repr(y)) for x,y in self.properties.items()]) | |
| 905 | |
| 906 def enableJournalling(self): | |
| 907 '''Turn journalling on for this class | |
| 908 ''' | |
| 909 self.do_journal = 1 | |
| 910 | |
| 911 def disableJournalling(self): | |
| 912 '''Turn journalling off for this class | |
| 913 ''' | |
| 914 self.do_journal = 0 | |
| 915 | |
| 916 # Editing nodes: | |
| 917 def create(self, **propvalues): | |
| 918 ''' Create a new node of this class and return its id. | |
| 919 | |
| 920 The keyword arguments in 'propvalues' map property names to values. | |
| 921 | |
| 922 The values of arguments must be acceptable for the types of their | |
| 923 corresponding properties or a TypeError is raised. | |
| 924 | |
| 925 If this class has a key property, it must be present and its value | |
| 926 must not collide with other key strings or a ValueError is raised. | |
| 927 | |
| 928 Any other properties on this class that are missing from the | |
| 929 'propvalues' dictionary are set to None. | |
| 930 | |
| 931 If an id in a link or multilink property does not refer to a valid | |
| 932 node, an IndexError is raised. | |
| 933 ''' | |
|
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Richard Jones <richard@users.sourceforge.net>
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changeset
|
934 self.fireAuditors('create', None, propvalues) |
|
c70068162e64
Altered Class.create() and FileClass.create() methods...
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parents:
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changeset
|
935 newid = self.create_inner(**propvalues) |
|
c70068162e64
Altered Class.create() and FileClass.create() methods...
Richard Jones <richard@users.sourceforge.net>
parents:
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diff
changeset
|
936 self.fireReactors('create', newid, None) |
|
c70068162e64
Altered Class.create() and FileClass.create() methods...
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parents:
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diff
changeset
|
937 return newid |
|
c70068162e64
Altered Class.create() and FileClass.create() methods...
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parents:
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diff
changeset
|
938 |
|
c70068162e64
Altered Class.create() and FileClass.create() methods...
Richard Jones <richard@users.sourceforge.net>
parents:
1417
diff
changeset
|
939 def create_inner(self, **propvalues): |
|
c70068162e64
Altered Class.create() and FileClass.create() methods...
Richard Jones <richard@users.sourceforge.net>
parents:
1417
diff
changeset
|
940 ''' Called by create, in-between the audit and react calls. |
|
c70068162e64
Altered Class.create() and FileClass.create() methods...
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parents:
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diff
changeset
|
941 ''' |
| 1165 | 942 if propvalues.has_key('id'): |
| 943 raise KeyError, '"id" is reserved' | |
| 944 | |
| 945 if self.db.journaltag is None: | |
| 946 raise DatabaseError, 'Database open read-only' | |
| 947 | |
| 948 if propvalues.has_key('creation') or propvalues.has_key('activity'): | |
| 949 raise KeyError, '"creation" and "activity" are reserved' | |
| 950 | |
| 951 # new node's id | |
| 952 newid = self.db.newid(self.classname) | |
| 953 | |
| 954 # validate propvalues | |
| 955 num_re = re.compile('^\d+$') | |
| 956 for key, value in propvalues.items(): | |
| 957 if key == self.key: | |
| 958 try: | |
| 959 self.lookup(value) | |
| 960 except KeyError: | |
| 961 pass | |
| 962 else: | |
| 963 raise ValueError, 'node with key "%s" exists'%value | |
| 964 | |
| 965 # try to handle this property | |
| 966 try: | |
| 967 prop = self.properties[key] | |
| 968 except KeyError: | |
| 969 raise KeyError, '"%s" has no property "%s"'%(self.classname, | |
| 970 key) | |
| 971 | |
| 972 if value is not None and isinstance(prop, Link): | |
| 973 if type(value) != type(''): | |
| 974 raise ValueError, 'link value must be String' | |
| 975 link_class = self.properties[key].classname | |
| 976 # if it isn't a number, it's a key | |
| 977 if not num_re.match(value): | |
| 978 try: | |
| 979 value = self.db.classes[link_class].lookup(value) | |
| 980 except (TypeError, KeyError): | |
| 981 raise IndexError, 'new property "%s": %s not a %s'%( | |
| 982 key, value, link_class) | |
| 983 elif not self.db.getclass(link_class).hasnode(value): | |
| 984 raise IndexError, '%s has no node %s'%(link_class, value) | |
| 985 | |
| 986 # save off the value | |
| 987 propvalues[key] = value | |
| 988 | |
| 989 # register the link with the newly linked node | |
| 990 if self.do_journal and self.properties[key].do_journal: | |
| 991 self.db.addjournal(link_class, value, 'link', | |
| 992 (self.classname, newid, key)) | |
| 993 | |
| 994 elif isinstance(prop, Multilink): | |
| 995 if type(value) != type([]): | |
| 996 raise TypeError, 'new property "%s" not a list of ids'%key | |
| 997 | |
| 998 # clean up and validate the list of links | |
| 999 link_class = self.properties[key].classname | |
| 1000 l = [] | |
| 1001 for entry in value: | |
| 1002 if type(entry) != type(''): | |
| 1003 raise ValueError, '"%s" multilink value (%r) '\ | |
| 1004 'must contain Strings'%(key, value) | |
| 1005 # if it isn't a number, it's a key | |
| 1006 if not num_re.match(entry): | |
| 1007 try: | |
| 1008 entry = self.db.classes[link_class].lookup(entry) | |
| 1009 except (TypeError, KeyError): | |
| 1010 raise IndexError, 'new property "%s": %s not a %s'%( | |
| 1011 key, entry, self.properties[key].classname) | |
| 1012 l.append(entry) | |
| 1013 value = l | |
| 1014 propvalues[key] = value | |
| 1015 | |
| 1016 # handle additions | |
| 1017 for nodeid in value: | |
| 1018 if not self.db.getclass(link_class).hasnode(nodeid): | |
| 1019 raise IndexError, '%s has no node %s'%(link_class, | |
| 1020 nodeid) | |
| 1021 # register the link with the newly linked node | |
| 1022 if self.do_journal and self.properties[key].do_journal: | |
| 1023 self.db.addjournal(link_class, nodeid, 'link', | |
| 1024 (self.classname, newid, key)) | |
| 1025 | |
| 1026 elif isinstance(prop, String): | |
|
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parents:
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diff
changeset
|
1027 if type(value) != type('') and type(value) != type(u''): |
| 1165 | 1028 raise TypeError, 'new property "%s" not a string'%key |
| 1029 | |
| 1030 elif isinstance(prop, Password): | |
| 1031 if not isinstance(value, password.Password): | |
| 1032 raise TypeError, 'new property "%s" not a Password'%key | |
| 1033 | |
| 1034 elif isinstance(prop, Date): | |
| 1035 if value is not None and not isinstance(value, date.Date): | |
| 1036 raise TypeError, 'new property "%s" not a Date'%key | |
| 1037 | |
| 1038 elif isinstance(prop, Interval): | |
| 1039 if value is not None and not isinstance(value, date.Interval): | |
| 1040 raise TypeError, 'new property "%s" not an Interval'%key | |
| 1041 | |
| 1042 elif value is not None and isinstance(prop, Number): | |
| 1043 try: | |
| 1044 float(value) | |
| 1045 except ValueError: | |
| 1046 raise TypeError, 'new property "%s" not numeric'%key | |
| 1047 | |
| 1048 elif value is not None and isinstance(prop, Boolean): | |
| 1049 try: | |
| 1050 int(value) | |
| 1051 except ValueError: | |
| 1052 raise TypeError, 'new property "%s" not boolean'%key | |
| 1053 | |
| 1054 # make sure there's data where there needs to be | |
| 1055 for key, prop in self.properties.items(): | |
| 1056 if propvalues.has_key(key): | |
| 1057 continue | |
| 1058 if key == self.key: | |
| 1059 raise ValueError, 'key property "%s" is required'%key | |
| 1060 if isinstance(prop, Multilink): | |
| 1061 propvalues[key] = [] | |
| 1062 else: | |
| 1063 propvalues[key] = None | |
| 1064 | |
| 1065 # done | |
| 1066 self.db.addnode(self.classname, newid, propvalues) | |
| 1067 if self.do_journal: | |
|
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working toward 0.5.2 release
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parents:
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diff
changeset
|
1068 self.db.addjournal(self.classname, newid, 'create', {}) |
| 1165 | 1069 |
| 1070 return newid | |
| 1071 | |
| 1072 def export_list(self, propnames, nodeid): | |
| 1073 ''' Export a node - generate a list of CSV-able data in the order | |
| 1074 specified by propnames for the given node. | |
| 1075 ''' | |
| 1076 properties = self.getprops() | |
| 1077 l = [] | |
| 1078 for prop in propnames: | |
| 1079 proptype = properties[prop] | |
| 1080 value = self.get(nodeid, prop) | |
| 1081 # "marshal" data where needed | |
| 1082 if value is None: | |
| 1083 pass | |
| 1084 elif isinstance(proptype, hyperdb.Date): | |
| 1085 value = value.get_tuple() | |
| 1086 elif isinstance(proptype, hyperdb.Interval): | |
| 1087 value = value.get_tuple() | |
| 1088 elif isinstance(proptype, hyperdb.Password): | |
| 1089 value = str(value) | |
| 1090 l.append(repr(value)) | |
|
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fixed export/import of retired nodes [SF#685273]
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parents:
1467
diff
changeset
|
1091 l.append(self.is_retired(nodeid)) |
| 1165 | 1092 return l |
| 1093 | |
| 1094 def import_list(self, propnames, proplist): | |
| 1095 ''' Import a node - all information including "id" is present and | |
| 1096 should not be sanity checked. Triggers are not triggered. The | |
| 1097 journal should be initialised using the "creator" and "created" | |
| 1098 information. | |
| 1099 | |
| 1100 Return the nodeid of the node imported. | |
| 1101 ''' | |
| 1102 if self.db.journaltag is None: | |
| 1103 raise DatabaseError, 'Database open read-only' | |
| 1104 properties = self.getprops() | |
| 1105 | |
| 1106 # make the new node's property map | |
| 1107 d = {} | |
|
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relaxed CVS importing (feature [SF#693277])
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changeset
|
1108 retire = 0 |
|
e6ac4e074acb
relaxed CVS importing (feature [SF#693277])
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parents:
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diff
changeset
|
1109 newid = None |
| 1165 | 1110 for i in range(len(propnames)): |
| 1111 # Use eval to reverse the repr() used to output the CSV | |
| 1112 value = eval(proplist[i]) | |
| 1113 | |
| 1114 # Figure the property for this column | |
| 1115 propname = propnames[i] | |
| 1116 | |
| 1117 # "unmarshal" where necessary | |
| 1118 if propname == 'id': | |
| 1119 newid = value | |
| 1120 continue | |
|
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relaxed CVS importing (feature [SF#693277])
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parents:
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diff
changeset
|
1121 elif propname == 'is retired': |
|
e6ac4e074acb
relaxed CVS importing (feature [SF#693277])
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parents:
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diff
changeset
|
1122 # is the item retired? |
|
e6ac4e074acb
relaxed CVS importing (feature [SF#693277])
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parents:
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changeset
|
1123 if int(value): |
|
e6ac4e074acb
relaxed CVS importing (feature [SF#693277])
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parents:
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changeset
|
1124 retire = 1 |
|
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|
1125 continue |
|
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1126 |
|
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|
1127 prop = properties[propname] |
|
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|
1128 if value is None: |
| 1165 | 1129 # don't set Nones |
| 1130 continue | |
| 1131 elif isinstance(prop, hyperdb.Date): | |
| 1132 value = date.Date(value) | |
| 1133 elif isinstance(prop, hyperdb.Interval): | |
| 1134 value = date.Interval(value) | |
| 1135 elif isinstance(prop, hyperdb.Password): | |
| 1136 pwd = password.Password() | |
| 1137 pwd.unpack(value) | |
| 1138 value = pwd | |
| 1139 d[propname] = value | |
| 1140 | |
|
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|
1141 # get a new id if necessary |
|
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|
1142 if newid is None: |
|
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|
1143 newid = self.db.newid(self.classname) |
|
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|
1144 |
|
1476
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|
1145 # retire? |
|
1496
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|
1146 if retire: |
|
1476
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|
1147 # use the arg for __retired__ to cope with any odd database type |
|
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|
1148 # conversion (hello, sqlite) |
|
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|
1149 sql = 'update _%s set __retired__=%s where id=%s'%(self.classname, |
|
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|
1150 self.db.arg, self.db.arg) |
|
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|
1151 if __debug__: |
|
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|
1152 print >>hyperdb.DEBUG, 'retire', (self, sql, newid) |
|
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|
1153 self.db.cursor.execute(sql, (1, newid)) |
|
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|
1154 |
|
1187
84e40c9bcd99
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|
1155 # add the node and journal |
|
84e40c9bcd99
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|
1156 self.db.addnode(self.classname, newid, d) |
|
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|
1157 |
| 1165 | 1158 # extract the extraneous journalling gumpf and nuke it |
| 1159 if d.has_key('creator'): | |
| 1160 creator = d['creator'] | |
| 1161 del d['creator'] | |
|
1187
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1162 else: |
|
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|
1163 creator = None |
| 1165 | 1164 if d.has_key('creation'): |
| 1165 creation = d['creation'] | |
| 1166 del d['creation'] | |
|
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|
1167 else: |
|
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|
1168 creation = None |
| 1165 | 1169 if d.has_key('activity'): |
| 1170 del d['activity'] | |
|
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|
1171 self.db.addjournal(self.classname, newid, 'create', {}, creator, |
| 1165 | 1172 creation) |
| 1173 return newid | |
| 1174 | |
| 1175 _marker = [] | |
| 1176 def get(self, nodeid, propname, default=_marker, cache=1): | |
| 1177 '''Get the value of a property on an existing node of this class. | |
| 1178 | |
| 1179 'nodeid' must be the id of an existing node of this class or an | |
| 1180 IndexError is raised. 'propname' must be the name of a property | |
| 1181 of this class or a KeyError is raised. | |
| 1182 | |
| 1183 'cache' indicates whether the transaction cache should be queried | |
| 1184 for the node. If the node has been modified and you need to | |
| 1185 determine what its values prior to modification are, you need to | |
| 1186 set cache=0. | |
| 1187 ''' | |
| 1188 if propname == 'id': | |
| 1189 return nodeid | |
| 1190 | |
|
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|
1191 # get the node's dict |
|
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diff
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|
1192 d = self.db.getnode(self.classname, nodeid) |
|
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|
1193 |
| 1165 | 1194 if propname == 'creation': |
|
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1195 if d.has_key('creation'): |
|
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|
1196 return d['creation'] |
| 1165 | 1197 else: |
| 1198 return date.Date() | |
| 1199 if propname == 'activity': | |
|
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|
1200 if d.has_key('activity'): |
|
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|
1201 return d['activity'] |
| 1165 | 1202 else: |
| 1203 return date.Date() | |
| 1204 if propname == 'creator': | |
|
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|
1205 if d.has_key('creator'): |
|
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|
1206 return d['creator'] |
| 1165 | 1207 else: |
|
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|
1208 return self.db.curuserid |
| 1165 | 1209 |
| 1210 # get the property (raises KeyErorr if invalid) | |
| 1211 prop = self.properties[propname] | |
| 1212 | |
| 1213 if not d.has_key(propname): | |
| 1214 if default is self._marker: | |
| 1215 if isinstance(prop, Multilink): | |
| 1216 return [] | |
| 1217 else: | |
| 1218 return None | |
| 1219 else: | |
| 1220 return default | |
| 1221 | |
| 1222 # don't pass our list to other code | |
| 1223 if isinstance(prop, Multilink): | |
| 1224 return d[propname][:] | |
| 1225 | |
| 1226 return d[propname] | |
| 1227 | |
| 1228 def getnode(self, nodeid, cache=1): | |
| 1229 ''' Return a convenience wrapper for the node. | |
| 1230 | |
| 1231 'nodeid' must be the id of an existing node of this class or an | |
| 1232 IndexError is raised. | |
| 1233 | |
| 1234 'cache' indicates whether the transaction cache should be queried | |
| 1235 for the node. If the node has been modified and you need to | |
| 1236 determine what its values prior to modification are, you need to | |
| 1237 set cache=0. | |
| 1238 ''' | |
| 1239 return Node(self, nodeid, cache=cache) | |
| 1240 | |
| 1241 def set(self, nodeid, **propvalues): | |
| 1242 '''Modify a property on an existing node of this class. | |
| 1243 | |
| 1244 'nodeid' must be the id of an existing node of this class or an | |
| 1245 IndexError is raised. | |
| 1246 | |
| 1247 Each key in 'propvalues' must be the name of a property of this | |
| 1248 class or a KeyError is raised. | |
| 1249 | |
| 1250 All values in 'propvalues' must be acceptable types for their | |
| 1251 corresponding properties or a TypeError is raised. | |
| 1252 | |
| 1253 If the value of the key property is set, it must not collide with | |
| 1254 other key strings or a ValueError is raised. | |
| 1255 | |
| 1256 If the value of a Link or Multilink property contains an invalid | |
| 1257 node id, a ValueError is raised. | |
| 1258 ''' | |
| 1259 if not propvalues: | |
| 1260 return propvalues | |
| 1261 | |
| 1262 if propvalues.has_key('creation') or propvalues.has_key('activity'): | |
| 1263 raise KeyError, '"creation" and "activity" are reserved' | |
| 1264 | |
| 1265 if propvalues.has_key('id'): | |
| 1266 raise KeyError, '"id" is reserved' | |
| 1267 | |
| 1268 if self.db.journaltag is None: | |
| 1269 raise DatabaseError, 'Database open read-only' | |
| 1270 | |
| 1271 self.fireAuditors('set', nodeid, propvalues) | |
| 1272 # Take a copy of the node dict so that the subsequent set | |
| 1273 # operation doesn't modify the oldvalues structure. | |
| 1274 # XXX used to try the cache here first | |
| 1275 oldvalues = copy.deepcopy(self.db.getnode(self.classname, nodeid)) | |
| 1276 | |
| 1277 node = self.db.getnode(self.classname, nodeid) | |
| 1278 if self.is_retired(nodeid): | |
| 1279 raise IndexError, 'Requested item is retired' | |
| 1280 num_re = re.compile('^\d+$') | |
| 1281 | |
| 1282 # if the journal value is to be different, store it in here | |
| 1283 journalvalues = {} | |
| 1284 | |
| 1285 # remember the add/remove stuff for multilinks, making it easier | |
| 1286 # for the Database layer to do its stuff | |
| 1287 multilink_changes = {} | |
| 1288 | |
| 1289 for propname, value in propvalues.items(): | |
| 1290 # check to make sure we're not duplicating an existing key | |
| 1291 if propname == self.key and node[propname] != value: | |
| 1292 try: | |
| 1293 self.lookup(value) | |
| 1294 except KeyError: | |
| 1295 pass | |
| 1296 else: | |
| 1297 raise ValueError, 'node with key "%s" exists'%value | |
| 1298 | |
| 1299 # this will raise the KeyError if the property isn't valid | |
| 1300 # ... we don't use getprops() here because we only care about | |
| 1301 # the writeable properties. | |
|
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1302 try: |
|
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|
1303 prop = self.properties[propname] |
|
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|
1304 except KeyError: |
|
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|
1305 raise KeyError, '"%s" has no property named "%s"'%( |
|
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diff
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|
1306 self.classname, propname) |
| 1165 | 1307 |
| 1308 # if the value's the same as the existing value, no sense in | |
| 1309 # doing anything | |
|
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|
1310 current = node.get(propname, None) |
|
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|
1311 if value == current: |
| 1165 | 1312 del propvalues[propname] |
| 1313 continue | |
|
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changeset
|
1314 journalvalues[propname] = current |
| 1165 | 1315 |
| 1316 # do stuff based on the prop type | |
| 1317 if isinstance(prop, Link): | |
| 1318 link_class = prop.classname | |
| 1319 # if it isn't a number, it's a key | |
| 1320 if value is not None and not isinstance(value, type('')): | |
| 1321 raise ValueError, 'property "%s" link value be a string'%( | |
| 1322 propname) | |
| 1323 if isinstance(value, type('')) and not num_re.match(value): | |
| 1324 try: | |
| 1325 value = self.db.classes[link_class].lookup(value) | |
| 1326 except (TypeError, KeyError): | |
| 1327 raise IndexError, 'new property "%s": %s not a %s'%( | |
| 1328 propname, value, prop.classname) | |
| 1329 | |
| 1330 if (value is not None and | |
| 1331 not self.db.getclass(link_class).hasnode(value)): | |
| 1332 raise IndexError, '%s has no node %s'%(link_class, value) | |
| 1333 | |
| 1334 if self.do_journal and prop.do_journal: | |
| 1335 # register the unlink with the old linked node | |
| 1336 if node[propname] is not None: | |
| 1337 self.db.addjournal(link_class, node[propname], 'unlink', | |
| 1338 (self.classname, nodeid, propname)) | |
| 1339 | |
| 1340 # register the link with the newly linked node | |
| 1341 if value is not None: | |
| 1342 self.db.addjournal(link_class, value, 'link', | |
| 1343 (self.classname, nodeid, propname)) | |
| 1344 | |
| 1345 elif isinstance(prop, Multilink): | |
| 1346 if type(value) != type([]): | |
| 1347 raise TypeError, 'new property "%s" not a list of'\ | |
| 1348 ' ids'%propname | |
| 1349 link_class = self.properties[propname].classname | |
| 1350 l = [] | |
| 1351 for entry in value: | |
| 1352 # if it isn't a number, it's a key | |
| 1353 if type(entry) != type(''): | |
| 1354 raise ValueError, 'new property "%s" link value ' \ | |
| 1355 'must be a string'%propname | |
| 1356 if not num_re.match(entry): | |
| 1357 try: | |
| 1358 entry = self.db.classes[link_class].lookup(entry) | |
| 1359 except (TypeError, KeyError): | |
| 1360 raise IndexError, 'new property "%s": %s not a %s'%( | |
| 1361 propname, entry, | |
| 1362 self.properties[propname].classname) | |
| 1363 l.append(entry) | |
| 1364 value = l | |
| 1365 propvalues[propname] = value | |
| 1366 | |
| 1367 # figure the journal entry for this property | |
| 1368 add = [] | |
| 1369 remove = [] | |
| 1370 | |
| 1371 # handle removals | |
| 1372 if node.has_key(propname): | |
| 1373 l = node[propname] | |
| 1374 else: | |
| 1375 l = [] | |
| 1376 for id in l[:]: | |
| 1377 if id in value: | |
| 1378 continue | |
| 1379 # register the unlink with the old linked node | |
| 1380 if self.do_journal and self.properties[propname].do_journal: | |
| 1381 self.db.addjournal(link_class, id, 'unlink', | |
| 1382 (self.classname, nodeid, propname)) | |
| 1383 l.remove(id) | |
| 1384 remove.append(id) | |
| 1385 | |
| 1386 # handle additions | |
| 1387 for id in value: | |
| 1388 if not self.db.getclass(link_class).hasnode(id): | |
| 1389 raise IndexError, '%s has no node %s'%(link_class, id) | |
| 1390 if id in l: | |
| 1391 continue | |
| 1392 # register the link with the newly linked node | |
| 1393 if self.do_journal and self.properties[propname].do_journal: | |
| 1394 self.db.addjournal(link_class, id, 'link', | |
| 1395 (self.classname, nodeid, propname)) | |
| 1396 l.append(id) | |
| 1397 add.append(id) | |
| 1398 | |
| 1399 # figure the journal entry | |
| 1400 l = [] | |
| 1401 if add: | |
| 1402 l.append(('+', add)) | |
| 1403 if remove: | |
| 1404 l.append(('-', remove)) | |
| 1405 multilink_changes[propname] = (add, remove) | |
| 1406 if l: | |
| 1407 journalvalues[propname] = tuple(l) | |
| 1408 | |
| 1409 elif isinstance(prop, String): | |
|
1383
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diff
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|
1410 if value is not None and type(value) != type('') and type(value) != type(u''): |
| 1165 | 1411 raise TypeError, 'new property "%s" not a string'%propname |
| 1412 | |
| 1413 elif isinstance(prop, Password): | |
| 1414 if not isinstance(value, password.Password): | |
| 1415 raise TypeError, 'new property "%s" not a Password'%propname | |
| 1416 propvalues[propname] = value | |
| 1417 | |
| 1418 elif value is not None and isinstance(prop, Date): | |
| 1419 if not isinstance(value, date.Date): | |
| 1420 raise TypeError, 'new property "%s" not a Date'% propname | |
| 1421 propvalues[propname] = value | |
| 1422 | |
| 1423 elif value is not None and isinstance(prop, Interval): | |
| 1424 if not isinstance(value, date.Interval): | |
| 1425 raise TypeError, 'new property "%s" not an '\ | |
| 1426 'Interval'%propname | |
| 1427 propvalues[propname] = value | |
| 1428 | |
| 1429 elif value is not None and isinstance(prop, Number): | |
| 1430 try: | |
| 1431 float(value) | |
| 1432 except ValueError: | |
| 1433 raise TypeError, 'new property "%s" not numeric'%propname | |
| 1434 | |
| 1435 elif value is not None and isinstance(prop, Boolean): | |
| 1436 try: | |
| 1437 int(value) | |
| 1438 except ValueError: | |
| 1439 raise TypeError, 'new property "%s" not boolean'%propname | |
| 1440 | |
| 1441 # nothing to do? | |
| 1442 if not propvalues: | |
| 1443 return propvalues | |
| 1444 | |
| 1445 # do the set, and journal it | |
|
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|
1446 self.db.setnode(self.classname, nodeid, propvalues, multilink_changes) |
| 1165 | 1447 |
| 1448 if self.do_journal: | |
|
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|
1449 self.db.addjournal(self.classname, nodeid, 'set', journalvalues) |
| 1165 | 1450 |
| 1451 self.fireReactors('set', nodeid, oldvalues) | |
| 1452 | |
| 1453 return propvalues | |
| 1454 | |
| 1455 def retire(self, nodeid): | |
| 1456 '''Retire a node. | |
| 1457 | |
| 1458 The properties on the node remain available from the get() method, | |
| 1459 and the node's id is never reused. | |
| 1460 | |
| 1461 Retired nodes are not returned by the find(), list(), or lookup() | |
| 1462 methods, and other nodes may reuse the values of their key properties. | |
| 1463 ''' | |
| 1464 if self.db.journaltag is None: | |
| 1465 raise DatabaseError, 'Database open read-only' | |
| 1466 | |
|
1345
618aa9c37d65
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1333
diff
changeset
|
1467 self.fireAuditors('retire', nodeid, None) |
|
618aa9c37d65
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changeset
|
1468 |
|
1222
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diff
changeset
|
1469 # use the arg for __retired__ to cope with any odd database type |
|
bc3bc3248dd1
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diff
changeset
|
1470 # conversion (hello, sqlite) |
|
bc3bc3248dd1
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diff
changeset
|
1471 sql = 'update _%s set __retired__=%s where id=%s'%(self.classname, |
|
bc3bc3248dd1
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1212
diff
changeset
|
1472 self.db.arg, self.db.arg) |
| 1165 | 1473 if __debug__: |
| 1474 print >>hyperdb.DEBUG, 'retire', (self, sql, nodeid) | |
|
1222
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1475 self.db.cursor.execute(sql, (1, nodeid)) |
|
1519
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1476 if self.do_journal: |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1477 self.db.addjournal(self.classname, nodeid, 'retired', None) |
| 1165 | 1478 |
|
1345
618aa9c37d65
fire auditors and reactors in rdbms retire (thanks Sheila King)
Richard Jones <richard@users.sourceforge.net>
parents:
1333
diff
changeset
|
1479 self.fireReactors('retire', nodeid, None) |
|
618aa9c37d65
fire auditors and reactors in rdbms retire (thanks Sheila King)
Richard Jones <richard@users.sourceforge.net>
parents:
1333
diff
changeset
|
1480 |
|
1519
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1481 def restore(self, nodeid): |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1482 '''Restpre a retired node. |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1483 |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1484 Make node available for all operations like it was before retirement. |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1485 ''' |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1486 if self.db.journaltag is None: |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1487 raise DatabaseError, 'Database open read-only' |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1488 |
|
1523
63aa7be52d2c
checked to make sure that the restored item doesn't clash...
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1519
diff
changeset
|
1489 node = self.db.getnode(self.classname, nodeid) |
|
63aa7be52d2c
checked to make sure that the restored item doesn't clash...
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1519
diff
changeset
|
1490 # check if key property was overrided |
|
63aa7be52d2c
checked to make sure that the restored item doesn't clash...
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1519
diff
changeset
|
1491 key = self.getkey() |
|
63aa7be52d2c
checked to make sure that the restored item doesn't clash...
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1519
diff
changeset
|
1492 try: |
|
63aa7be52d2c
checked to make sure that the restored item doesn't clash...
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1519
diff
changeset
|
1493 id = self.lookup(node[key]) |
|
63aa7be52d2c
checked to make sure that the restored item doesn't clash...
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1519
diff
changeset
|
1494 except KeyError: |
|
63aa7be52d2c
checked to make sure that the restored item doesn't clash...
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1519
diff
changeset
|
1495 pass |
|
63aa7be52d2c
checked to make sure that the restored item doesn't clash...
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1519
diff
changeset
|
1496 else: |
|
63aa7be52d2c
checked to make sure that the restored item doesn't clash...
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1519
diff
changeset
|
1497 raise KeyError, "Key property (%s) of retired node clashes with \ |
|
63aa7be52d2c
checked to make sure that the restored item doesn't clash...
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1519
diff
changeset
|
1498 existing one (%s)" % (key, node[key]) |
|
63aa7be52d2c
checked to make sure that the restored item doesn't clash...
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1519
diff
changeset
|
1499 |
|
1519
6fede2aa6a12
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Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1500 self.fireAuditors('restore', nodeid, None) |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1501 # use the arg for __retired__ to cope with any odd database type |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1502 # conversion (hello, sqlite) |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1503 sql = 'update _%s set __retired__=%s where id=%s'%(self.classname, |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1504 self.db.arg, self.db.arg) |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1505 if __debug__: |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1506 print >>hyperdb.DEBUG, 'restore', (self, sql, nodeid) |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1507 self.db.cursor.execute(sql, (0, nodeid)) |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1508 if self.do_journal: |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1515
diff
changeset
|
1509 self.db.addjournal(self.classname, nodeid, 'restored', None) |
|
6fede2aa6a12
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parents:
1515
diff
changeset
|
1510 |
|
6fede2aa6a12
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diff
changeset
|
1511 self.fireReactors('restore', nodeid, None) |
|
6fede2aa6a12
added ability to restore retired nodes
Andrey Lebedev <kedder@users.sourceforge.net>
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1515
diff
changeset
|
1512 |
| 1165 | 1513 def is_retired(self, nodeid): |
| 1514 '''Return true if the node is rerired | |
| 1515 ''' | |
| 1516 sql = 'select __retired__ from _%s where id=%s'%(self.classname, | |
| 1517 self.db.arg) | |
| 1518 if __debug__: | |
| 1519 print >>hyperdb.DEBUG, 'is_retired', (self, sql, nodeid) | |
|
1183
08a13a84ed43
Some speedups - both of the SQL backends can handle using only one cursor.
Richard Jones <richard@users.sourceforge.net>
parents:
1181
diff
changeset
|
1520 self.db.cursor.execute(sql, (nodeid,)) |
|
08a13a84ed43
Some speedups - both of the SQL backends can handle using only one cursor.
Richard Jones <richard@users.sourceforge.net>
parents:
1181
diff
changeset
|
1521 return int(self.db.sql_fetchone()[0]) |
| 1165 | 1522 |
| 1523 def destroy(self, nodeid): | |
| 1524 '''Destroy a node. | |
| 1525 | |
| 1526 WARNING: this method should never be used except in extremely rare | |
| 1527 situations where there could never be links to the node being | |
| 1528 deleted | |
| 1529 WARNING: use retire() instead | |
| 1530 WARNING: the properties of this node will not be available ever again | |
| 1531 WARNING: really, use retire() instead | |
| 1532 | |
| 1533 Well, I think that's enough warnings. This method exists mostly to | |
| 1534 support the session storage of the cgi interface. | |
| 1535 | |
| 1536 The node is completely removed from the hyperdb, including all journal | |
| 1537 entries. It will no longer be available, and will generally break code | |
| 1538 if there are any references to the node. | |
| 1539 ''' | |
| 1540 if self.db.journaltag is None: | |
| 1541 raise DatabaseError, 'Database open read-only' | |
| 1542 self.db.destroynode(self.classname, nodeid) | |
| 1543 | |
| 1544 def history(self, nodeid): | |
| 1545 '''Retrieve the journal of edits on a particular node. | |
| 1546 | |
| 1547 'nodeid' must be the id of an existing node of this class or an | |
| 1548 IndexError is raised. | |
| 1549 | |
| 1550 The returned list contains tuples of the form | |
| 1551 | |
|
1409
8dc60d87ab42
Fixed a backlog of bug reports, and worked on python 2.3 compatibility:
Richard Jones <richard@users.sourceforge.net>
parents:
1383
diff
changeset
|
1552 (nodeid, date, tag, action, params) |
| 1165 | 1553 |
| 1554 'date' is a Timestamp object specifying the time of the change and | |
| 1555 'tag' is the journaltag specified when the database was opened. | |
| 1556 ''' | |
| 1557 if not self.do_journal: | |
| 1558 raise ValueError, 'Journalling is disabled for this class' | |
| 1559 return self.db.getjournal(self.classname, nodeid) | |
| 1560 | |
| 1561 # Locating nodes: | |
| 1562 def hasnode(self, nodeid): | |
| 1563 '''Determine if the given nodeid actually exists | |
| 1564 ''' | |
| 1565 return self.db.hasnode(self.classname, nodeid) | |
| 1566 | |
| 1567 def setkey(self, propname): | |
| 1568 '''Select a String property of this class to be the key property. | |
| 1569 | |
| 1570 'propname' must be the name of a String property of this class or | |
| 1571 None, or a TypeError is raised. The values of the key property on | |
| 1572 all existing nodes must be unique or a ValueError is raised. | |
| 1573 ''' | |
| 1574 # XXX create an index on the key prop column | |
| 1575 prop = self.getprops()[propname] | |
| 1576 if not isinstance(prop, String): | |
| 1577 raise TypeError, 'key properties must be String' | |
| 1578 self.key = propname | |
| 1579 | |
| 1580 def getkey(self): | |
| 1581 '''Return the name of the key property for this class or None.''' | |
| 1582 return self.key | |
| 1583 | |
| 1584 def labelprop(self, default_to_id=0): | |
| 1585 ''' Return the property name for a label for the given node. | |
| 1586 | |
| 1587 This method attempts to generate a consistent label for the node. | |
| 1588 It tries the following in order: | |
| 1589 1. key property | |
| 1590 2. "name" property | |
| 1591 3. "title" property | |
| 1592 4. first property from the sorted property name list | |
| 1593 ''' | |
| 1594 k = self.getkey() | |
| 1595 if k: | |
| 1596 return k | |
| 1597 props = self.getprops() | |
| 1598 if props.has_key('name'): | |
| 1599 return 'name' | |
| 1600 elif props.has_key('title'): | |
| 1601 return 'title' | |
| 1602 if default_to_id: | |
| 1603 return 'id' | |
| 1604 props = props.keys() | |
| 1605 props.sort() | |
| 1606 return props[0] | |
| 1607 | |
| 1608 def lookup(self, keyvalue): | |
| 1609 '''Locate a particular node by its key property and return its id. | |
| 1610 | |
| 1611 If this class has no key property, a TypeError is raised. If the | |
| 1612 'keyvalue' matches one of the values for the key property among | |
| 1613 the nodes in this class, the matching node's id is returned; | |
| 1614 otherwise a KeyError is raised. | |
| 1615 ''' | |
| 1616 if not self.key: | |
| 1617 raise TypeError, 'No key property set for class %s'%self.classname | |
| 1618 | |
|
1222
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1619 # use the arg to handle any odd database type conversion (hello, |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1620 # sqlite) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1621 sql = "select id from _%s where _%s=%s and __retired__ <> %s"%( |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1622 self.classname, self.key, self.db.arg, self.db.arg) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1623 self.db.sql(sql, (keyvalue, 1)) |
| 1165 | 1624 |
|
1174
8e318dfaf479
Verify contents of tracker module when the tracker is opened
Richard Jones <richard@users.sourceforge.net>
parents:
1173
diff
changeset
|
1625 # see if there was a result that's not retired |
|
1203
735adcbfc665
fix to SQL lookup() and retirement
Richard Jones <richard@users.sourceforge.net>
parents:
1195
diff
changeset
|
1626 row = self.db.sql_fetchone() |
|
735adcbfc665
fix to SQL lookup() and retirement
Richard Jones <richard@users.sourceforge.net>
parents:
1195
diff
changeset
|
1627 if not row: |
|
1174
8e318dfaf479
Verify contents of tracker module when the tracker is opened
Richard Jones <richard@users.sourceforge.net>
parents:
1173
diff
changeset
|
1628 raise KeyError, 'No key (%s) value "%s" for "%s"'%(self.key, |
|
8e318dfaf479
Verify contents of tracker module when the tracker is opened
Richard Jones <richard@users.sourceforge.net>
parents:
1173
diff
changeset
|
1629 keyvalue, self.classname) |
| 1165 | 1630 |
| 1631 # return the id | |
|
1203
735adcbfc665
fix to SQL lookup() and retirement
Richard Jones <richard@users.sourceforge.net>
parents:
1195
diff
changeset
|
1632 return row[0] |
| 1165 | 1633 |
| 1634 def find(self, **propspec): | |
| 1635 '''Get the ids of nodes in this class which link to the given nodes. | |
| 1636 | |
|
1222
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1637 'propspec' consists of keyword args propname=nodeid or |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1638 propname={nodeid:1, } |
| 1165 | 1639 'propname' must be the name of a property in this class, or a |
| 1640 KeyError is raised. That property must be a Link or Multilink | |
| 1641 property, or a TypeError is raised. | |
| 1642 | |
| 1643 Any node in this class whose 'propname' property links to any of the | |
| 1644 nodeids will be returned. Used by the full text indexing, which knows | |
| 1645 that "foo" occurs in msg1, msg3 and file7, so we have hits on these | |
| 1646 issues: | |
| 1647 | |
| 1648 db.issue.find(messages={'1':1,'3':1}, files={'7':1}) | |
| 1649 ''' | |
| 1650 if __debug__: | |
| 1651 print >>hyperdb.DEBUG, 'find', (self, propspec) | |
|
1222
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1652 |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1653 # shortcut |
| 1165 | 1654 if not propspec: |
| 1655 return [] | |
|
1222
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1656 |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1657 # validate the args |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1658 props = self.getprops() |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1659 propspec = propspec.items() |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1660 for propname, nodeids in propspec: |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1661 # check the prop is OK |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1662 prop = props[propname] |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1663 if not isinstance(prop, Link) and not isinstance(prop, Multilink): |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1664 raise TypeError, "'%s' not a Link/Multilink property"%propname |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1665 |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1666 # first, links |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1667 where = [] |
| 1165 | 1668 allvalues = () |
|
1222
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1669 a = self.db.arg |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1670 for prop, values in propspec: |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1671 if not isinstance(props[prop], hyperdb.Link): |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1672 continue |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1673 if type(values) is type(''): |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1674 allvalues += (values,) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1675 where.append('_%s = %s'%(prop, a)) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1676 else: |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1677 allvalues += tuple(values.keys()) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1678 where.append('_%s in (%s)'%(prop, ','.join([a]*len(values)))) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1679 tables = [] |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1680 if where: |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1681 tables.append('select id as nodeid from _%s where %s'%( |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1682 self.classname, ' and '.join(where))) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1683 |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1684 # now multilinks |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1685 for prop, values in propspec: |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1686 if not isinstance(props[prop], hyperdb.Multilink): |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1687 continue |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1688 if type(values) is type(''): |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1689 allvalues += (values,) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1690 s = a |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1691 else: |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1692 allvalues += tuple(values.keys()) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1693 s = ','.join([a]*len(values)) |
| 1165 | 1694 tables.append('select nodeid from %s_%s where linkid in (%s)'%( |
|
1222
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1695 self.classname, prop, s)) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1696 sql = '\nunion\n'.join(tables) |
|
1183
08a13a84ed43
Some speedups - both of the SQL backends can handle using only one cursor.
Richard Jones <richard@users.sourceforge.net>
parents:
1181
diff
changeset
|
1697 self.db.sql(sql, allvalues) |
|
1195
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1698 l = [x[0] for x in self.db.sql_fetchall()] |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1699 if __debug__: |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1700 print >>hyperdb.DEBUG, 'find ... ', l |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1701 return l |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1702 |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1703 def stringFind(self, **requirements): |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1704 '''Locate a particular node by matching a set of its String |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1705 properties in a caseless search. |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1706 |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1707 If the property is not a String property, a TypeError is raised. |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1708 |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1709 The return is a list of the id of all nodes that match. |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1710 ''' |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1711 where = [] |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1712 args = [] |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1713 for propname in requirements.keys(): |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1714 prop = self.properties[propname] |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1715 if isinstance(not prop, String): |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1716 raise TypeError, "'%s' not a String property"%propname |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1717 where.append(propname) |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1718 args.append(requirements[propname].lower()) |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1719 |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1720 # generate the where clause |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1721 s = ' and '.join(['_%s=%s'%(col, self.db.arg) for col in where]) |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1722 sql = 'select id from _%s where %s'%(self.classname, s) |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1723 self.db.sql(sql, tuple(args)) |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1724 l = [x[0] for x in self.db.sql_fetchall()] |
| 1165 | 1725 if __debug__: |
| 1726 print >>hyperdb.DEBUG, 'find ... ', l | |
| 1727 return l | |
| 1728 | |
| 1729 def list(self): | |
| 1730 ''' Return a list of the ids of the active nodes in this class. | |
| 1731 ''' | |
|
1484
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1732 return self.getnodeids(retired=0) |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1733 |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1734 def getnodeids(self, retired=None): |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1735 ''' Retrieve all the ids of the nodes for a particular Class. |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1736 |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1737 Set retired=None to get all nodes. Otherwise it'll get all the |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1738 retired or non-retired nodes, depending on the flag. |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1739 ''' |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1740 # flip the sense of the flag if we don't want all of them |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1741 if retired is not None: |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1742 retired = not retired |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1743 sql = 'select id from _%s where __retired__ <> %s'%(self.classname, |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1744 self.db.arg) |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1745 if __debug__: |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1746 print >>hyperdb.DEBUG, 'getnodeids', (self, sql, retired) |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1747 self.db.cursor.execute(sql, (retired,)) |
|
b3f2484babce
fixes to import/export
Richard Jones <richard@users.sourceforge.net>
parents:
1479
diff
changeset
|
1748 return [x[0] for x in self.db.cursor.fetchall()] |
| 1165 | 1749 |
|
1249
6c24a86a12ae
Fixes for SourceForge tracker bugs.
Richard Jones <richard@users.sourceforge.net>
parents:
1244
diff
changeset
|
1750 def filter(self, search_matches, filterspec, sort=(None,None), |
|
6c24a86a12ae
Fixes for SourceForge tracker bugs.
Richard Jones <richard@users.sourceforge.net>
parents:
1244
diff
changeset
|
1751 group=(None,None)): |
| 1165 | 1752 ''' Return a list of the ids of the active nodes in this class that |
| 1753 match the 'filter' spec, sorted by the group spec and then the | |
| 1754 sort spec | |
| 1755 | |
| 1756 "filterspec" is {propname: value(s)} | |
| 1757 "sort" and "group" are (dir, prop) where dir is '+', '-' or None | |
| 1758 and prop is a prop name or None | |
| 1759 "search_matches" is {nodeid: marker} | |
|
1170
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1760 |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1761 The filter must match all properties specificed - but if the |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1762 property value to match is a list, any one of the values in the |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1763 list may match for that property to match. |
| 1165 | 1764 ''' |
|
1205
0df08772f166
fix to SQL filtering
Richard Jones <richard@users.sourceforge.net>
parents:
1203
diff
changeset
|
1765 # just don't bother if the full-text search matched diddly |
|
0df08772f166
fix to SQL filtering
Richard Jones <richard@users.sourceforge.net>
parents:
1203
diff
changeset
|
1766 if search_matches == {}: |
|
0df08772f166
fix to SQL filtering
Richard Jones <richard@users.sourceforge.net>
parents:
1203
diff
changeset
|
1767 return [] |
|
0df08772f166
fix to SQL filtering
Richard Jones <richard@users.sourceforge.net>
parents:
1203
diff
changeset
|
1768 |
| 1165 | 1769 cn = self.classname |
| 1770 | |
|
1499
8ee69708da0c
added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1496
diff
changeset
|
1771 timezone = self.db.getUserTimezone() |
|
8ee69708da0c
added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents:
1496
diff
changeset
|
1772 |
| 1165 | 1773 # figure the WHERE clause from the filterspec |
| 1774 props = self.getprops() | |
| 1775 frum = ['_'+cn] | |
| 1776 where = [] | |
| 1777 args = [] | |
|
1168
94620e088e3a
fixes to the rdbms backends
Richard Jones <richard@users.sourceforge.net>
parents:
1165
diff
changeset
|
1778 a = self.db.arg |
| 1165 | 1779 for k, v in filterspec.items(): |
| 1780 propclass = props[k] | |
|
1170
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1781 # now do other where clause stuff |
| 1165 | 1782 if isinstance(propclass, Multilink): |
| 1783 tn = '%s_%s'%(cn, k) | |
| 1784 frum.append(tn) | |
| 1785 if isinstance(v, type([])): | |
|
1174
8e318dfaf479
Verify contents of tracker module when the tracker is opened
Richard Jones <richard@users.sourceforge.net>
parents:
1173
diff
changeset
|
1786 s = ','.join([a for x in v]) |
| 1165 | 1787 where.append('id=%s.nodeid and %s.linkid in (%s)'%(tn,tn,s)) |
| 1788 args = args + v | |
| 1789 else: | |
|
1170
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1790 where.append('id=%s.nodeid and %s.linkid = %s'%(tn, tn, a)) |
| 1165 | 1791 args.append(v) |
|
1365
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1792 elif k == 'id': |
|
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1793 if isinstance(v, type([])): |
|
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1794 s = ','.join([a for x in v]) |
|
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1795 where.append('%s in (%s)'%(k, s)) |
|
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1796 args = args + v |
|
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1797 else: |
|
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1798 where.append('%s=%s'%(k, a)) |
|
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1799 args.append(v) |
|
1170
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1800 elif isinstance(propclass, String): |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1801 if not isinstance(v, type([])): |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1802 v = [v] |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1803 |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1804 # Quote the bits in the string that need it and then embed |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1805 # in a "substring" search. Note - need to quote the '%' so |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1806 # they make it through the python layer happily |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1807 v = ['%%'+self.db.sql_stringquote(s)+'%%' for s in v] |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1808 |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1809 # now add to the where clause |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1810 where.append(' or '.join(["_%s LIKE '%s'"%(k, s) for s in v])) |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1811 # note: args are embedded in the query string now |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1812 elif isinstance(propclass, Link): |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1813 if isinstance(v, type([])): |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1814 if '-1' in v: |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1815 v.remove('-1') |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1816 xtra = ' or _%s is NULL'%k |
|
1173
58f1a2c174ed
simple LRU cache for SQL databases
Richard Jones <richard@users.sourceforge.net>
parents:
1172
diff
changeset
|
1817 else: |
|
58f1a2c174ed
simple LRU cache for SQL databases
Richard Jones <richard@users.sourceforge.net>
parents:
1172
diff
changeset
|
1818 xtra = '' |
|
1295
9c3459cb8ab6
work-around for sqlite bug
Richard Jones <richard@users.sourceforge.net>
parents:
1252
diff
changeset
|
1819 if v: |
|
9c3459cb8ab6
work-around for sqlite bug
Richard Jones <richard@users.sourceforge.net>
parents:
1252
diff
changeset
|
1820 s = ','.join([a for x in v]) |
|
9c3459cb8ab6
work-around for sqlite bug
Richard Jones <richard@users.sourceforge.net>
parents:
1252
diff
changeset
|
1821 where.append('(_%s in (%s)%s)'%(k, s, xtra)) |
|
9c3459cb8ab6
work-around for sqlite bug
Richard Jones <richard@users.sourceforge.net>
parents:
1252
diff
changeset
|
1822 args = args + v |
|
9c3459cb8ab6
work-around for sqlite bug
Richard Jones <richard@users.sourceforge.net>
parents:
1252
diff
changeset
|
1823 else: |
|
9c3459cb8ab6
work-around for sqlite bug
Richard Jones <richard@users.sourceforge.net>
parents:
1252
diff
changeset
|
1824 where.append('_%s is NULL'%k) |
|
1170
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1825 else: |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1826 if v == '-1': |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1827 v = None |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1828 where.append('_%s is NULL'%k) |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1829 else: |
|
af104fa52746
Added some words to the installation doc about choosing backends.
Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1830 where.append('_%s=%s'%(k, a)) |
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1831 args.append(v) |
|
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1832 elif isinstance(propclass, Date): |
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1833 if isinstance(v, type([])): |
|
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1834 s = ','.join([a for x in v]) |
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1835 where.append('_%s in (%s)'%(k, s)) |
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1836 args = args + [date.Date(x).serialise() for x in v] |
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1837 else: |
|
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1838 try: |
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1839 # Try to filter on range of dates |
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1840 date_rng = Range(v, date.Date, offset=timezone) |
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1841 if (date_rng.from_value): |
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1842 where.append('_%s > %s'%(k, a)) |
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1843 args.append(date_rng.from_value.serialise()) |
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1844 if (date_rng.to_value): |
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1845 where.append('_%s < %s'%(k, a)) |
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1846 args.append(date_rng.to_value.serialise()) |
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1847 except ValueError: |
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1848 # If range creation fails - ignore that search parameter |
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1849 pass |
|
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1850 elif isinstance(propclass, Interval): |
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1851 if isinstance(v, type([])): |
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1852 s = ','.join([a for x in v]) |
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1853 where.append('_%s in (%s)'%(k, s)) |
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1854 args = args + [date.Interval(x).serialise() for x in v] |
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1855 else: |
|
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1856 where.append('_%s=%s'%(k, a)) |
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1857 args.append(date.Interval(v).serialise()) |
| 1165 | 1858 else: |
| 1859 if isinstance(v, type([])): | |
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1860 s = ','.join([a for x in v]) |
| 1165 | 1861 where.append('_%s in (%s)'%(k, s)) |
| 1862 args = args + v | |
| 1863 else: | |
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1864 where.append('_%s=%s'%(k, a)) |
| 1165 | 1865 args.append(v) |
| 1866 | |
| 1867 # add results of full text search | |
| 1868 if search_matches is not None: | |
| 1869 v = search_matches.keys() | |
|
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1870 s = ','.join([a for x in v]) |
| 1165 | 1871 where.append('id in (%s)'%s) |
| 1872 args = args + v | |
| 1873 | |
|
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1874 # "grouping" is just the first-order sorting in the SQL fetch |
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1875 # can modify it...) |
| 1165 | 1876 orderby = [] |
| 1877 ordercols = [] | |
|
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1878 if group[0] is not None and group[1] is not None: |
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1879 if group[0] != '-': |
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1880 orderby.append('_'+group[1]) |
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1881 ordercols.append('_'+group[1]) |
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1882 else: |
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1883 orderby.append('_'+group[1]+' desc') |
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1884 ordercols.append('_'+group[1]) |
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1885 |
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1886 # now add in the sorting |
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1887 group = '' |
| 1165 | 1888 if sort[0] is not None and sort[1] is not None: |
|
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1889 direction, colname = sort |
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1890 if direction != '-': |
|
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1891 if colname == 'id': |
|
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1892 orderby.append(colname) |
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1893 else: |
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1894 orderby.append('_'+colname) |
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1895 ordercols.append('_'+colname) |
| 1165 | 1896 else: |
|
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1897 if colname == 'id': |
|
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1898 orderby.append(colname+' desc') |
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1899 ordercols.append(colname) |
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1900 else: |
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1901 orderby.append('_'+colname+' desc') |
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1902 ordercols.append('_'+colname) |
| 1165 | 1903 |
| 1904 # construct the SQL | |
| 1905 frum = ','.join(frum) | |
|
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1906 if where: |
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1907 where = ' where ' + (' and '.join(where)) |
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1908 else: |
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1909 where = '' |
| 1165 | 1910 cols = ['id'] |
| 1911 if orderby: | |
| 1912 cols = cols + ordercols | |
| 1913 order = ' order by %s'%(','.join(orderby)) | |
| 1914 else: | |
| 1915 order = '' | |
| 1916 cols = ','.join(cols) | |
|
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1917 sql = 'select %s from %s %s%s%s'%(cols, frum, where, group, order) |
| 1165 | 1918 args = tuple(args) |
| 1919 if __debug__: | |
|
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1920 print >>hyperdb.DEBUG, 'filter', (self, sql, args) |
|
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1921 self.db.cursor.execute(sql, args) |
|
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1922 l = self.db.cursor.fetchall() |
| 1165 | 1923 |
|
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1924 # return the IDs (the first column) |
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1925 # XXX The filter(None, l) bit is sqlite-specific... if there's _NO_ |
|
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1926 # XXX matches to a fetch, it returns NULL instead of nothing!?! |
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1927 return filter(None, [row[0] for row in l]) |
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1928 |
| 1165 | 1929 def count(self): |
| 1930 '''Get the number of nodes in this class. | |
| 1931 | |
| 1932 If the returned integer is 'numnodes', the ids of all the nodes | |
| 1933 in this class run from 1 to numnodes, and numnodes+1 will be the | |
| 1934 id of the next node to be created in this class. | |
| 1935 ''' | |
| 1936 return self.db.countnodes(self.classname) | |
| 1937 | |
| 1938 # Manipulating properties: | |
| 1939 def getprops(self, protected=1): | |
| 1940 '''Return a dictionary mapping property names to property objects. | |
| 1941 If the "protected" flag is true, we include protected properties - | |
| 1942 those which may not be modified. | |
| 1943 ''' | |
| 1944 d = self.properties.copy() | |
| 1945 if protected: | |
| 1946 d['id'] = String() | |
| 1947 d['creation'] = hyperdb.Date() | |
| 1948 d['activity'] = hyperdb.Date() | |
|
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1949 d['creator'] = hyperdb.Link('user') |
| 1165 | 1950 return d |
| 1951 | |
| 1952 def addprop(self, **properties): | |
| 1953 '''Add properties to this class. | |
| 1954 | |
| 1955 The keyword arguments in 'properties' must map names to property | |
| 1956 objects, or a TypeError is raised. None of the keys in 'properties' | |
| 1957 may collide with the names of existing properties, or a ValueError | |
| 1958 is raised before any properties have been added. | |
| 1959 ''' | |
| 1960 for key in properties.keys(): | |
| 1961 if self.properties.has_key(key): | |
| 1962 raise ValueError, key | |
| 1963 self.properties.update(properties) | |
| 1964 | |
| 1965 def index(self, nodeid): | |
| 1966 '''Add (or refresh) the node to search indexes | |
| 1967 ''' | |
| 1968 # find all the String properties that have indexme | |
| 1969 for prop, propclass in self.getprops().items(): | |
| 1970 if isinstance(propclass, String) and propclass.indexme: | |
| 1971 try: | |
| 1972 value = str(self.get(nodeid, prop)) | |
| 1973 except IndexError: | |
| 1974 # node no longer exists - entry should be removed | |
| 1975 self.db.indexer.purge_entry((self.classname, nodeid, prop)) | |
| 1976 else: | |
| 1977 # and index them under (classname, nodeid, property) | |
| 1978 self.db.indexer.add_text((self.classname, nodeid, prop), | |
| 1979 value) | |
| 1980 | |
| 1981 | |
| 1982 # | |
| 1983 # Detector interface | |
| 1984 # | |
| 1985 def audit(self, event, detector): | |
| 1986 '''Register a detector | |
| 1987 ''' | |
| 1988 l = self.auditors[event] | |
| 1989 if detector not in l: | |
| 1990 self.auditors[event].append(detector) | |
| 1991 | |
| 1992 def fireAuditors(self, action, nodeid, newvalues): | |
| 1993 '''Fire all registered auditors. | |
| 1994 ''' | |
| 1995 for audit in self.auditors[action]: | |
| 1996 audit(self.db, self, nodeid, newvalues) | |
| 1997 | |
| 1998 def react(self, event, detector): | |
| 1999 '''Register a detector | |
| 2000 ''' | |
| 2001 l = self.reactors[event] | |
| 2002 if detector not in l: | |
| 2003 self.reactors[event].append(detector) | |
| 2004 | |
| 2005 def fireReactors(self, action, nodeid, oldvalues): | |
| 2006 '''Fire all registered reactors. | |
| 2007 ''' | |
| 2008 for react in self.reactors[action]: | |
| 2009 react(self.db, self, nodeid, oldvalues) | |
| 2010 | |
|
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2011 class FileClass(Class, hyperdb.FileClass): |
| 1165 | 2012 '''This class defines a large chunk of data. To support this, it has a |
| 2013 mandatory String property "content" which is typically saved off | |
| 2014 externally to the hyperdb. | |
| 2015 | |
| 2016 The default MIME type of this data is defined by the | |
| 2017 "default_mime_type" class attribute, which may be overridden by each | |
| 2018 node if the class defines a "type" String property. | |
| 2019 ''' | |
| 2020 default_mime_type = 'text/plain' | |
| 2021 | |
| 2022 def create(self, **propvalues): | |
| 2023 ''' snaffle the file propvalue and store in a file | |
| 2024 ''' | |
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2025 # we need to fire the auditors now, or the content property won't |
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2026 # be in propvalues for the auditors to play with |
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2027 self.fireAuditors('create', None, propvalues) |
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2028 |
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2029 # now remove the content property so it's not stored in the db |
| 1165 | 2030 content = propvalues['content'] |
| 2031 del propvalues['content'] | |
|
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2032 |
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2033 # do the database create |
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2034 newid = Class.create_inner(self, **propvalues) |
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2035 |
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2036 # fire reactors |
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2037 self.fireReactors('create', newid, None) |
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2038 |
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2039 # store off the content as a file |
| 1165 | 2040 self.db.storefile(self.classname, newid, None, content) |
| 2041 return newid | |
| 2042 | |
| 2043 def import_list(self, propnames, proplist): | |
| 2044 ''' Trap the "content" property... | |
| 2045 ''' | |
| 2046 # dupe this list so we don't affect others | |
| 2047 propnames = propnames[:] | |
| 2048 | |
| 2049 # extract the "content" property from the proplist | |
| 2050 i = propnames.index('content') | |
| 2051 content = eval(proplist[i]) | |
| 2052 del propnames[i] | |
| 2053 del proplist[i] | |
| 2054 | |
| 2055 # do the normal import | |
| 2056 newid = Class.import_list(self, propnames, proplist) | |
| 2057 | |
| 2058 # save off the "content" file | |
| 2059 self.db.storefile(self.classname, newid, None, content) | |
| 2060 return newid | |
| 2061 | |
| 2062 _marker = [] | |
| 2063 def get(self, nodeid, propname, default=_marker, cache=1): | |
| 2064 ''' trap the content propname and get it from the file | |
| 2065 ''' | |
| 2066 poss_msg = 'Possibly a access right configuration problem.' | |
| 2067 if propname == 'content': | |
| 2068 try: | |
| 2069 return self.db.getfile(self.classname, nodeid, None) | |
| 2070 except IOError, (strerror): | |
| 2071 # BUG: by catching this we donot see an error in the log. | |
| 2072 return 'ERROR reading file: %s%s\n%s\n%s'%( | |
| 2073 self.classname, nodeid, poss_msg, strerror) | |
| 2074 if default is not self._marker: | |
| 2075 return Class.get(self, nodeid, propname, default, cache=cache) | |
| 2076 else: | |
| 2077 return Class.get(self, nodeid, propname, cache=cache) | |
| 2078 | |
| 2079 def getprops(self, protected=1): | |
| 2080 ''' In addition to the actual properties on the node, these methods | |
| 2081 provide the "content" property. If the "protected" flag is true, | |
| 2082 we include protected properties - those which may not be | |
| 2083 modified. | |
| 2084 ''' | |
| 2085 d = Class.getprops(self, protected=protected).copy() | |
| 2086 d['content'] = hyperdb.String() | |
| 2087 return d | |
| 2088 | |
| 2089 def index(self, nodeid): | |
| 2090 ''' Index the node in the search index. | |
| 2091 | |
| 2092 We want to index the content in addition to the normal String | |
| 2093 property indexing. | |
| 2094 ''' | |
| 2095 # perform normal indexing | |
| 2096 Class.index(self, nodeid) | |
| 2097 | |
| 2098 # get the content to index | |
| 2099 content = self.get(nodeid, 'content') | |
| 2100 | |
| 2101 # figure the mime type | |
| 2102 if self.properties.has_key('type'): | |
| 2103 mime_type = self.get(nodeid, 'type') | |
| 2104 else: | |
| 2105 mime_type = self.default_mime_type | |
| 2106 | |
| 2107 # and index! | |
| 2108 self.db.indexer.add_text((self.classname, nodeid, 'content'), content, | |
| 2109 mime_type) | |
| 2110 | |
| 2111 # XXX deviation from spec - was called ItemClass | |
| 2112 class IssueClass(Class, roundupdb.IssueClass): | |
| 2113 # Overridden methods: | |
| 2114 def __init__(self, db, classname, **properties): | |
| 2115 '''The newly-created class automatically includes the "messages", | |
| 2116 "files", "nosy", and "superseder" properties. If the 'properties' | |
| 2117 dictionary attempts to specify any of these properties or a | |
| 2118 "creation" or "activity" property, a ValueError is raised. | |
| 2119 ''' | |
| 2120 if not properties.has_key('title'): | |
| 2121 properties['title'] = hyperdb.String(indexme='yes') | |
| 2122 if not properties.has_key('messages'): | |
| 2123 properties['messages'] = hyperdb.Multilink("msg") | |
| 2124 if not properties.has_key('files'): | |
| 2125 properties['files'] = hyperdb.Multilink("file") | |
| 2126 if not properties.has_key('nosy'): | |
| 2127 # note: journalling is turned off as it really just wastes | |
| 2128 # space. this behaviour may be overridden in an instance | |
| 2129 properties['nosy'] = hyperdb.Multilink("user", do_journal="no") | |
| 2130 if not properties.has_key('superseder'): | |
| 2131 properties['superseder'] = hyperdb.Multilink(classname) | |
| 2132 Class.__init__(self, db, classname, **properties) | |
| 2133 |