Mercurial > p > roundup > code
annotate roundup/backends/rdbms_common.py @ 1476:5a01e90b7dc9
fixed export/import of retired nodes [SF#685273]
| author | Richard Jones <richard@users.sourceforge.net> |
|---|---|
| date | Wed, 26 Feb 2003 23:42:54 +0000 |
| parents | 378081f066cc |
| children | 405e91b5be46 |
| rev | line source |
|---|---|
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fixed export/import of retired nodes [SF#685273]
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1 # $Id: rdbms_common.py,v 1.36 2003-02-26 23:42:54 richard Exp $ |
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2 ''' Relational database (SQL) backend common code. |
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3 |
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4 Basics: |
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5 |
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6 - map roundup classes to relational tables |
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7 - automatically detect schema changes and modify the table schemas |
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8 appropriately (we store the "database version" of the schema in the |
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9 database itself as the only row of the "schema" table) |
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10 - multilinks (which represent a many-to-many relationship) are handled through |
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11 intermediate tables |
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12 - journals are stored adjunct to the per-class tables |
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13 - table names and columns have "_" prepended so the names can't clash with |
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14 restricted names (like "order") |
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15 - retirement is determined by the __retired__ column being true |
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16 |
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17 Database-specific changes may generally be pushed out to the overridable |
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18 sql_* methods, since everything else should be fairly generic. There's |
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19 probably a bit of work to be done if a database is used that actually |
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20 honors column typing, since the initial databases don't (sqlite stores |
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21 everything as a string, and gadfly stores anything that's marsallable). |
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22 ''' |
| 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 |
| 1165 | 37 |
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38 # number of rows to keep in memory |
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39 ROW_CACHE_SIZE = 100 |
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40 |
| 1165 | 41 class Database(FileStorage, hyperdb.Database, roundupdb.Database): |
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42 ''' Wrapper around an SQL database that presents a hyperdb interface. |
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43 |
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44 - some functionality is specific to the actual SQL database, hence |
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45 the sql_* methods that are NotImplemented |
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46 - we keep a cache of the latest ROW_CACHE_SIZE row fetches. |
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47 ''' |
| 1165 | 48 def __init__(self, config, journaltag=None): |
| 49 ''' Open the database and load the schema from it. | |
| 50 ''' | |
| 51 self.config, self.journaltag = config, journaltag | |
| 52 self.dir = config.DATABASE | |
| 53 self.classes = {} | |
| 54 self.indexer = Indexer(self.dir) | |
| 55 self.sessions = Sessions(self.config) | |
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56 self.otks = OneTimeKeys(self.config) |
| 1165 | 57 self.security = security.Security(self) |
| 58 | |
| 59 # additional transaction support for external files and the like | |
| 60 self.transactions = [] | |
| 61 | |
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62 # keep a cache of the N most recently retrieved rows of any kind |
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63 # (classname, nodeid) = row |
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64 self.cache = {} |
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65 self.cache_lru = [] |
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66 |
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67 # database lock |
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68 self.lockfile = None |
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69 |
| 1165 | 70 # open a connection to the database, creating the "conn" attribute |
| 71 self.open_connection() | |
| 72 | |
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73 def clearCache(self): |
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74 self.cache = {} |
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75 self.cache_lru = [] |
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76 |
| 1165 | 77 def open_connection(self): |
| 78 ''' Open a connection to the database, creating it if necessary | |
| 79 ''' | |
| 80 raise NotImplemented | |
| 81 | |
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82 def sql(self, sql, args=None): |
| 1165 | 83 ''' Execute the sql with the optional args. |
| 84 ''' | |
| 85 if __debug__: | |
| 86 print >>hyperdb.DEBUG, (self, sql, args) | |
| 87 if args: | |
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88 self.cursor.execute(sql, args) |
| 1165 | 89 else: |
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90 self.cursor.execute(sql) |
| 1165 | 91 |
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92 def sql_fetchone(self): |
| 1165 | 93 ''' Fetch a single row. If there's nothing to fetch, return None. |
| 94 ''' | |
| 95 raise NotImplemented | |
| 96 | |
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97 def sql_stringquote(self, value): |
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98 ''' Quote the string so it's safe to put in the 'sql quotes' |
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99 ''' |
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100 return re.sub("'", "''", str(value)) |
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101 |
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102 def save_dbschema(self, schema): |
| 1165 | 103 ''' Save the schema definition that the database currently implements |
| 104 ''' | |
| 105 raise NotImplemented | |
| 106 | |
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107 def load_dbschema(self): |
| 1165 | 108 ''' Load the schema definition that the database currently implements |
| 109 ''' | |
| 110 raise NotImplemented | |
| 111 | |
| 112 def post_init(self): | |
| 113 ''' Called once the schema initialisation has finished. | |
| 114 | |
| 115 We should now confirm that the schema defined by our "classes" | |
| 116 attribute actually matches the schema in the database. | |
| 117 ''' | |
| 118 # now detect changes in the schema | |
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119 save = 0 |
| 1165 | 120 for classname, spec in self.classes.items(): |
| 121 if self.database_schema.has_key(classname): | |
| 122 dbspec = self.database_schema[classname] | |
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123 if self.update_class(spec, dbspec): |
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124 self.database_schema[classname] = spec.schema() |
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125 save = 1 |
| 1165 | 126 else: |
| 127 self.create_class(spec) | |
| 128 self.database_schema[classname] = spec.schema() | |
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129 save = 1 |
| 1165 | 130 |
| 131 for classname in self.database_schema.keys(): | |
| 132 if not self.classes.has_key(classname): | |
| 133 self.drop_class(classname) | |
| 134 | |
| 135 # update the database version of the schema | |
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136 if save: |
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137 self.sql('delete from schema') |
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138 self.save_dbschema(self.database_schema) |
| 1165 | 139 |
| 140 # reindex the db if necessary | |
| 141 if self.indexer.should_reindex(): | |
| 142 self.reindex() | |
| 143 | |
| 144 # commit | |
| 145 self.conn.commit() | |
| 146 | |
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147 # figure the "curuserid" |
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148 if self.journaltag is None: |
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149 self.curuserid = None |
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150 elif self.journaltag == 'admin': |
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151 # admin user may not exist, but always has ID 1 |
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152 self.curuserid = '1' |
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153 else: |
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154 self.curuserid = self.user.lookup(self.journaltag) |
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155 |
| 1165 | 156 def reindex(self): |
| 157 for klass in self.classes.values(): | |
| 158 for nodeid in klass.list(): | |
| 159 klass.index(nodeid) | |
| 160 self.indexer.save_index() | |
| 161 | |
| 162 def determine_columns(self, properties): | |
| 163 ''' Figure the column names and multilink properties from the spec | |
| 164 | |
| 165 "properties" is a list of (name, prop) where prop may be an | |
| 166 instance of a hyperdb "type" _or_ a string repr of that type. | |
| 167 ''' | |
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168 cols = ['_activity', '_creator', '_creation'] |
| 1165 | 169 mls = [] |
| 170 # add the multilinks separately | |
| 171 for col, prop in properties: | |
| 172 if isinstance(prop, Multilink): | |
| 173 mls.append(col) | |
| 174 elif isinstance(prop, type('')) and prop.find('Multilink') != -1: | |
| 175 mls.append(col) | |
| 176 else: | |
| 177 cols.append('_'+col) | |
| 178 cols.sort() | |
| 179 return cols, mls | |
| 180 | |
| 181 def update_class(self, spec, dbspec): | |
| 182 ''' Determine the differences between the current spec and the | |
| 183 database version of the spec, and update where necessary | |
| 184 ''' | |
| 185 spec_schema = spec.schema() | |
| 186 if spec_schema == dbspec: | |
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187 # no save needed for this one |
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188 return 0 |
| 1165 | 189 if __debug__: |
| 190 print >>hyperdb.DEBUG, 'update_class FIRING' | |
| 191 | |
| 192 # key property changed? | |
| 193 if dbspec[0] != spec_schema[0]: | |
| 194 if __debug__: | |
| 195 print >>hyperdb.DEBUG, 'update_class setting keyprop', `spec[0]` | |
| 196 # XXX turn on indexing for the key property | |
| 197 | |
| 198 # dict 'em up | |
| 199 spec_propnames,spec_props = [],{} | |
| 200 for propname,prop in spec_schema[1]: | |
| 201 spec_propnames.append(propname) | |
| 202 spec_props[propname] = prop | |
| 203 dbspec_propnames,dbspec_props = [],{} | |
| 204 for propname,prop in dbspec[1]: | |
| 205 dbspec_propnames.append(propname) | |
| 206 dbspec_props[propname] = prop | |
| 207 | |
| 208 # now compare | |
| 209 for propname in spec_propnames: | |
| 210 prop = spec_props[propname] | |
| 211 if dbspec_props.has_key(propname) and prop==dbspec_props[propname]: | |
| 212 continue | |
| 213 if __debug__: | |
| 214 print >>hyperdb.DEBUG, 'update_class ADD', (propname, prop) | |
| 215 | |
| 216 if not dbspec_props.has_key(propname): | |
| 217 # add the property | |
| 218 if isinstance(prop, Multilink): | |
| 219 # all we have to do here is create a new table, easy! | |
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220 self.create_multilink_table(spec, propname) |
| 1165 | 221 continue |
| 222 | |
| 223 # no ALTER TABLE, so we: | |
| 224 # 1. pull out the data, including an extra None column | |
| 225 oldcols, x = self.determine_columns(dbspec[1]) | |
| 226 oldcols.append('id') | |
| 227 oldcols.append('__retired__') | |
| 228 cn = spec.classname | |
| 229 sql = 'select %s,%s from _%s'%(','.join(oldcols), self.arg, cn) | |
| 230 if __debug__: | |
| 231 print >>hyperdb.DEBUG, 'update_class', (self, sql, None) | |
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232 self.cursor.execute(sql, (None,)) |
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233 olddata = self.cursor.fetchall() |
| 1165 | 234 |
| 235 # 2. drop the old table | |
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236 self.cursor.execute('drop table _%s'%cn) |
| 1165 | 237 |
| 238 # 3. create the new table | |
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239 cols, mls = self.create_class_table(spec) |
| 1165 | 240 # ensure the new column is last |
| 241 cols.remove('_'+propname) | |
| 242 assert oldcols == cols, "Column lists don't match!" | |
| 243 cols.append('_'+propname) | |
| 244 | |
| 245 # 4. populate with the data from step one | |
| 246 s = ','.join([self.arg for x in cols]) | |
| 247 scols = ','.join(cols) | |
| 248 sql = 'insert into _%s (%s) values (%s)'%(cn, scols, s) | |
| 249 | |
| 250 # GAH, nothing had better go wrong from here on in... but | |
| 251 # we have to commit the drop... | |
| 252 # XXX this isn't necessary in sqlite :( | |
| 253 self.conn.commit() | |
| 254 | |
| 255 # do the insert | |
| 256 for row in olddata: | |
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257 self.sql(sql, tuple(row)) |
| 1165 | 258 |
| 259 else: | |
| 260 # modify the property | |
| 261 if __debug__: | |
| 262 print >>hyperdb.DEBUG, 'update_class NOOP' | |
| 263 pass # NOOP in gadfly | |
| 264 | |
| 265 # and the other way - only worry about deletions here | |
| 266 for propname in dbspec_propnames: | |
| 267 prop = dbspec_props[propname] | |
| 268 if spec_props.has_key(propname): | |
| 269 continue | |
| 270 if __debug__: | |
| 271 print >>hyperdb.DEBUG, 'update_class REMOVE', `prop` | |
| 272 | |
| 273 # delete the property | |
| 274 if isinstance(prop, Multilink): | |
| 275 sql = 'drop table %s_%s'%(spec.classname, prop) | |
| 276 if __debug__: | |
| 277 print >>hyperdb.DEBUG, 'update_class', (self, sql) | |
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278 self.cursor.execute(sql) |
| 1165 | 279 else: |
| 280 # no ALTER TABLE, so we: | |
| 281 # 1. pull out the data, excluding the removed column | |
| 282 oldcols, x = self.determine_columns(spec.properties.items()) | |
| 283 oldcols.append('id') | |
| 284 oldcols.append('__retired__') | |
| 285 # remove the missing column | |
| 286 oldcols.remove('_'+propname) | |
| 287 cn = spec.classname | |
| 288 sql = 'select %s from _%s'%(','.join(oldcols), cn) | |
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289 self.cursor.execute(sql, (None,)) |
| 1165 | 290 olddata = sql.fetchall() |
| 291 | |
| 292 # 2. drop the old table | |
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293 self.cursor.execute('drop table _%s'%cn) |
| 1165 | 294 |
| 295 # 3. create the new table | |
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296 cols, mls = self.create_class_table(self, spec) |
| 1165 | 297 assert oldcols != cols, "Column lists don't match!" |
| 298 | |
| 299 # 4. populate with the data from step one | |
| 300 qs = ','.join([self.arg for x in cols]) | |
| 301 sql = 'insert into _%s values (%s)'%(cn, s) | |
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302 self.cursor.execute(sql, olddata) |
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303 return 1 |
| 1165 | 304 |
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305 def create_class_table(self, spec): |
| 1165 | 306 ''' create the class table for the given spec |
| 307 ''' | |
| 308 cols, mls = self.determine_columns(spec.properties.items()) | |
| 309 | |
| 310 # add on our special columns | |
| 311 cols.append('id') | |
| 312 cols.append('__retired__') | |
| 313 | |
| 314 # create the base table | |
| 315 scols = ','.join(['%s varchar'%x for x in cols]) | |
| 316 sql = 'create table _%s (%s)'%(spec.classname, scols) | |
| 317 if __debug__: | |
| 318 print >>hyperdb.DEBUG, 'create_class', (self, sql) | |
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319 self.cursor.execute(sql) |
| 1165 | 320 |
| 321 return cols, mls | |
| 322 | |
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323 def create_journal_table(self, spec): |
| 1165 | 324 ''' create the journal table for a class given the spec and |
| 325 already-determined cols | |
| 326 ''' | |
| 327 # journal table | |
| 328 cols = ','.join(['%s varchar'%x | |
| 329 for x in 'nodeid date tag action params'.split()]) | |
| 330 sql = 'create table %s__journal (%s)'%(spec.classname, cols) | |
| 331 if __debug__: | |
| 332 print >>hyperdb.DEBUG, 'create_class', (self, sql) | |
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333 self.cursor.execute(sql) |
| 1165 | 334 |
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335 def create_multilink_table(self, spec, ml): |
| 1165 | 336 ''' Create a multilink table for the "ml" property of the class |
| 337 given by the spec | |
| 338 ''' | |
| 339 sql = 'create table %s_%s (linkid varchar, nodeid varchar)'%( | |
| 340 spec.classname, ml) | |
| 341 if __debug__: | |
| 342 print >>hyperdb.DEBUG, 'create_class', (self, sql) | |
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343 self.cursor.execute(sql) |
| 1165 | 344 |
| 345 def create_class(self, spec): | |
| 346 ''' Create a database table according to the given spec. | |
| 347 ''' | |
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348 cols, mls = self.create_class_table(spec) |
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349 self.create_journal_table(spec) |
| 1165 | 350 |
| 351 # now create the multilink tables | |
| 352 for ml in mls: | |
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353 self.create_multilink_table(spec, ml) |
| 1165 | 354 |
| 355 # ID counter | |
| 356 sql = 'insert into ids (name, num) values (%s,%s)'%(self.arg, self.arg) | |
| 357 vals = (spec.classname, 1) | |
| 358 if __debug__: | |
| 359 print >>hyperdb.DEBUG, 'create_class', (self, sql, vals) | |
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360 self.cursor.execute(sql, vals) |
| 1165 | 361 |
| 362 def drop_class(self, spec): | |
| 363 ''' Drop the given table from the database. | |
| 364 | |
| 365 Drop the journal and multilink tables too. | |
| 366 ''' | |
| 367 # figure the multilinks | |
| 368 mls = [] | |
| 369 for col, prop in spec.properties.items(): | |
| 370 if isinstance(prop, Multilink): | |
| 371 mls.append(col) | |
| 372 | |
| 373 sql = 'drop table _%s'%spec.classname | |
| 374 if __debug__: | |
| 375 print >>hyperdb.DEBUG, 'drop_class', (self, sql) | |
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376 self.cursor.execute(sql) |
| 1165 | 377 |
| 378 sql = 'drop table %s__journal'%spec.classname | |
| 379 if __debug__: | |
| 380 print >>hyperdb.DEBUG, 'drop_class', (self, sql) | |
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381 self.cursor.execute(sql) |
| 1165 | 382 |
| 383 for ml in mls: | |
| 384 sql = 'drop table %s_%s'%(spec.classname, ml) | |
| 385 if __debug__: | |
| 386 print >>hyperdb.DEBUG, 'drop_class', (self, sql) | |
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387 self.cursor.execute(sql) |
| 1165 | 388 |
| 389 # | |
| 390 # Classes | |
| 391 # | |
| 392 def __getattr__(self, classname): | |
| 393 ''' A convenient way of calling self.getclass(classname). | |
| 394 ''' | |
| 395 if self.classes.has_key(classname): | |
| 396 if __debug__: | |
| 397 print >>hyperdb.DEBUG, '__getattr__', (self, classname) | |
| 398 return self.classes[classname] | |
| 399 raise AttributeError, classname | |
| 400 | |
| 401 def addclass(self, cl): | |
| 402 ''' Add a Class to the hyperdatabase. | |
| 403 ''' | |
| 404 if __debug__: | |
| 405 print >>hyperdb.DEBUG, 'addclass', (self, cl) | |
| 406 cn = cl.classname | |
| 407 if self.classes.has_key(cn): | |
| 408 raise ValueError, cn | |
| 409 self.classes[cn] = cl | |
| 410 | |
| 411 def getclasses(self): | |
| 412 ''' Return a list of the names of all existing classes. | |
| 413 ''' | |
| 414 if __debug__: | |
| 415 print >>hyperdb.DEBUG, 'getclasses', (self,) | |
| 416 l = self.classes.keys() | |
| 417 l.sort() | |
| 418 return l | |
| 419 | |
| 420 def getclass(self, classname): | |
| 421 '''Get the Class object representing a particular class. | |
| 422 | |
| 423 If 'classname' is not a valid class name, a KeyError is raised. | |
| 424 ''' | |
| 425 if __debug__: | |
| 426 print >>hyperdb.DEBUG, 'getclass', (self, classname) | |
| 427 try: | |
| 428 return self.classes[classname] | |
| 429 except KeyError: | |
| 430 raise KeyError, 'There is no class called "%s"'%classname | |
| 431 | |
| 432 def clear(self): | |
| 433 ''' Delete all database contents. | |
| 434 | |
| 435 Note: I don't commit here, which is different behaviour to the | |
| 436 "nuke from orbit" behaviour in the *dbms. | |
| 437 ''' | |
| 438 if __debug__: | |
| 439 print >>hyperdb.DEBUG, 'clear', (self,) | |
| 440 for cn in self.classes.keys(): | |
| 441 sql = 'delete from _%s'%cn | |
| 442 if __debug__: | |
| 443 print >>hyperdb.DEBUG, 'clear', (self, sql) | |
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444 self.cursor.execute(sql) |
| 1165 | 445 |
| 446 # | |
| 447 # Node IDs | |
| 448 # | |
| 449 def newid(self, classname): | |
| 450 ''' Generate a new id for the given class | |
| 451 ''' | |
| 452 # get the next ID | |
| 453 sql = 'select num from ids where name=%s'%self.arg | |
| 454 if __debug__: | |
| 455 print >>hyperdb.DEBUG, 'newid', (self, sql, classname) | |
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456 self.cursor.execute(sql, (classname, )) |
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457 newid = self.cursor.fetchone()[0] |
| 1165 | 458 |
| 459 # update the counter | |
| 460 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg) | |
| 461 vals = (int(newid)+1, classname) | |
| 462 if __debug__: | |
| 463 print >>hyperdb.DEBUG, 'newid', (self, sql, vals) | |
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464 self.cursor.execute(sql, vals) |
| 1165 | 465 |
| 466 # return as string | |
| 467 return str(newid) | |
| 468 | |
| 469 def setid(self, classname, setid): | |
| 470 ''' Set the id counter: used during import of database | |
| 471 ''' | |
| 472 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg) | |
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473 vals = (setid, classname) |
| 1165 | 474 if __debug__: |
| 475 print >>hyperdb.DEBUG, 'setid', (self, sql, vals) | |
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476 self.cursor.execute(sql, vals) |
| 1165 | 477 |
| 478 # | |
| 479 # Nodes | |
| 480 # | |
| 481 | |
| 482 def addnode(self, classname, nodeid, node): | |
| 483 ''' Add the specified node to its class's db. | |
| 484 ''' | |
| 485 if __debug__: | |
| 486 print >>hyperdb.DEBUG, 'addnode', (self, classname, nodeid, node) | |
| 487 # gadfly requires values for all non-multilink columns | |
| 488 cl = self.classes[classname] | |
| 489 cols, mls = self.determine_columns(cl.properties.items()) | |
| 490 | |
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491 # we'll be supplied these props if we're doing an import |
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492 if not node.has_key('creator'): |
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493 # add in the "calculated" properties (dupe so we don't affect |
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494 # calling code's node assumptions) |
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495 node = node.copy() |
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496 node['creation'] = node['activity'] = date.Date() |
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497 node['creator'] = self.curuserid |
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498 |
| 1165 | 499 # default the non-multilink columns |
| 500 for col, prop in cl.properties.items(): | |
| 501 if not isinstance(col, Multilink): | |
| 502 if not node.has_key(col): | |
| 503 node[col] = None | |
| 504 | |
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505 # clear this node out of the cache if it's in there |
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506 key = (classname, nodeid) |
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507 if self.cache.has_key(key): |
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508 del self.cache[key] |
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509 self.cache_lru.remove(key) |
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510 |
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511 # make the node data safe for the DB |
| 1165 | 512 node = self.serialise(classname, node) |
| 513 | |
| 514 # make sure the ordering is correct for column name -> column value | |
| 515 vals = tuple([node[col[1:]] for col in cols]) + (nodeid, 0) | |
| 516 s = ','.join([self.arg for x in cols]) + ',%s,%s'%(self.arg, self.arg) | |
| 517 cols = ','.join(cols) + ',id,__retired__' | |
| 518 | |
| 519 # perform the inserts | |
| 520 sql = 'insert into _%s (%s) values (%s)'%(classname, cols, s) | |
| 521 if __debug__: | |
| 522 print >>hyperdb.DEBUG, 'addnode', (self, sql, vals) | |
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523 self.cursor.execute(sql, vals) |
| 1165 | 524 |
| 525 # insert the multilink rows | |
| 526 for col in mls: | |
| 527 t = '%s_%s'%(classname, col) | |
| 528 for entry in node[col]: | |
| 529 sql = 'insert into %s (linkid, nodeid) values (%s,%s)'%(t, | |
| 530 self.arg, self.arg) | |
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531 self.sql(sql, (entry, nodeid)) |
| 1165 | 532 |
| 533 # make sure we do the commit-time extra stuff for this node | |
| 534 self.transactions.append((self.doSaveNode, (classname, nodeid, node))) | |
| 535 | |
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536 def setnode(self, classname, nodeid, values, multilink_changes): |
| 1165 | 537 ''' Change the specified node. |
| 538 ''' | |
| 539 if __debug__: | |
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540 print >>hyperdb.DEBUG, 'setnode', (self, classname, nodeid, values) |
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541 |
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542 # clear this node out of the cache if it's in there |
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543 key = (classname, nodeid) |
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544 if self.cache.has_key(key): |
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545 del self.cache[key] |
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546 self.cache_lru.remove(key) |
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547 |
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548 # add the special props |
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549 values = values.copy() |
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550 values['activity'] = date.Date() |
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551 |
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552 # make db-friendly |
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553 values = self.serialise(classname, values) |
| 1165 | 554 |
| 555 cl = self.classes[classname] | |
| 556 cols = [] | |
| 557 mls = [] | |
| 558 # add the multilinks separately | |
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559 props = cl.getprops() |
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560 for col in values.keys(): |
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561 prop = props[col] |
| 1165 | 562 if isinstance(prop, Multilink): |
| 563 mls.append(col) | |
| 564 else: | |
| 565 cols.append('_'+col) | |
| 566 cols.sort() | |
| 567 | |
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568 # if there's any updates to regular columns, do them |
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569 if cols: |
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570 # make sure the ordering is correct for column name -> column value |
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571 sqlvals = tuple([values[col[1:]] for col in cols]) + (nodeid,) |
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572 s = ','.join(['%s=%s'%(x, self.arg) for x in cols]) |
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573 cols = ','.join(cols) |
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574 |
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575 # perform the update |
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576 sql = 'update _%s set %s where id=%s'%(classname, s, self.arg) |
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577 if __debug__: |
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578 print >>hyperdb.DEBUG, 'setnode', (self, sql, sqlvals) |
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579 self.cursor.execute(sql, sqlvals) |
| 1165 | 580 |
| 581 # now the fun bit, updating the multilinks ;) | |
| 582 for col, (add, remove) in multilink_changes.items(): | |
| 583 tn = '%s_%s'%(classname, col) | |
| 584 if add: | |
| 585 sql = 'insert into %s (nodeid, linkid) values (%s,%s)'%(tn, | |
| 586 self.arg, self.arg) | |
| 587 for addid in add: | |
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588 self.sql(sql, (nodeid, addid)) |
| 1165 | 589 if remove: |
| 590 sql = 'delete from %s where nodeid=%s and linkid=%s'%(tn, | |
| 591 self.arg, self.arg) | |
| 592 for removeid in remove: | |
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593 self.sql(sql, (nodeid, removeid)) |
| 1165 | 594 |
| 595 # make sure we do the commit-time extra stuff for this node | |
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596 self.transactions.append((self.doSaveNode, (classname, nodeid, values))) |
| 1165 | 597 |
| 598 def getnode(self, classname, nodeid): | |
| 599 ''' Get a node from the database. | |
| 600 ''' | |
| 601 if __debug__: | |
| 602 print >>hyperdb.DEBUG, 'getnode', (self, classname, nodeid) | |
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603 |
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604 # see if we have this node cached |
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605 key = (classname, nodeid) |
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606 if self.cache.has_key(key): |
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607 # push us back to the top of the LRU |
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608 self.cache_lru.remove(key) |
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609 self.cache_lru.insert(0, key) |
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610 # return the cached information |
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611 return self.cache[key] |
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612 |
| 1165 | 613 # figure the columns we're fetching |
| 614 cl = self.classes[classname] | |
| 615 cols, mls = self.determine_columns(cl.properties.items()) | |
| 616 scols = ','.join(cols) | |
| 617 | |
| 618 # perform the basic property fetch | |
| 619 sql = 'select %s from _%s where id=%s'%(scols, classname, self.arg) | |
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620 self.sql(sql, (nodeid,)) |
| 1165 | 621 |
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622 values = self.sql_fetchone() |
| 1165 | 623 if values is None: |
| 624 raise IndexError, 'no such %s node %s'%(classname, nodeid) | |
| 625 | |
| 626 # make up the node | |
| 627 node = {} | |
| 628 for col in range(len(cols)): | |
| 629 node[cols[col][1:]] = values[col] | |
| 630 | |
| 631 # now the multilinks | |
| 632 for col in mls: | |
| 633 # get the link ids | |
| 634 sql = 'select linkid from %s_%s where nodeid=%s'%(classname, col, | |
| 635 self.arg) | |
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636 self.cursor.execute(sql, (nodeid,)) |
| 1165 | 637 # extract the first column from the result |
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638 node[col] = [x[0] for x in self.cursor.fetchall()] |
| 1165 | 639 |
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640 # un-dbificate the node data |
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641 node = self.unserialise(classname, node) |
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642 |
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643 # save off in the cache |
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644 key = (classname, nodeid) |
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645 self.cache[key] = node |
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646 # update the LRU |
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647 self.cache_lru.insert(0, key) |
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648 if len(self.cache_lru) > ROW_CACHE_SIZE: |
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649 del self.cache[self.cache_lru.pop()] |
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650 |
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651 return node |
| 1165 | 652 |
| 653 def destroynode(self, classname, nodeid): | |
| 654 '''Remove a node from the database. Called exclusively by the | |
| 655 destroy() method on Class. | |
| 656 ''' | |
| 657 if __debug__: | |
| 658 print >>hyperdb.DEBUG, 'destroynode', (self, classname, nodeid) | |
| 659 | |
| 660 # make sure the node exists | |
| 661 if not self.hasnode(classname, nodeid): | |
| 662 raise IndexError, '%s has no node %s'%(classname, nodeid) | |
| 663 | |
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664 # see if we have this node cached |
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665 if self.cache.has_key((classname, nodeid)): |
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666 del self.cache[(classname, nodeid)] |
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667 |
| 1165 | 668 # see if there's any obvious commit actions that we should get rid of |
| 669 for entry in self.transactions[:]: | |
| 670 if entry[1][:2] == (classname, nodeid): | |
| 671 self.transactions.remove(entry) | |
| 672 | |
| 673 # now do the SQL | |
| 674 sql = 'delete from _%s where id=%s'%(classname, self.arg) | |
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675 self.sql(sql, (nodeid,)) |
| 1165 | 676 |
| 677 # remove from multilnks | |
| 678 cl = self.getclass(classname) | |
| 679 x, mls = self.determine_columns(cl.properties.items()) | |
| 680 for col in mls: | |
| 681 # get the link ids | |
| 682 sql = 'delete from %s_%s where nodeid=%s'%(classname, col, self.arg) | |
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683 self.cursor.execute(sql, (nodeid,)) |
| 1165 | 684 |
| 685 # remove journal entries | |
| 686 sql = 'delete from %s__journal where nodeid=%s'%(classname, self.arg) | |
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687 self.sql(sql, (nodeid,)) |
| 1165 | 688 |
| 689 def serialise(self, classname, node): | |
| 690 '''Copy the node contents, converting non-marshallable data into | |
| 691 marshallable data. | |
| 692 ''' | |
| 693 if __debug__: | |
| 694 print >>hyperdb.DEBUG, 'serialise', classname, node | |
| 695 properties = self.getclass(classname).getprops() | |
| 696 d = {} | |
| 697 for k, v in node.items(): | |
| 698 # if the property doesn't exist, or is the "retired" flag then | |
| 699 # it won't be in the properties dict | |
| 700 if not properties.has_key(k): | |
| 701 d[k] = v | |
| 702 continue | |
| 703 | |
| 704 # get the property spec | |
| 705 prop = properties[k] | |
| 706 | |
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707 if isinstance(prop, Password) and v is not None: |
| 1165 | 708 d[k] = str(v) |
| 709 elif isinstance(prop, Date) and v is not None: | |
| 710 d[k] = v.serialise() | |
| 711 elif isinstance(prop, Interval) and v is not None: | |
| 712 d[k] = v.serialise() | |
| 713 else: | |
| 714 d[k] = v | |
| 715 return d | |
| 716 | |
| 717 def unserialise(self, classname, node): | |
| 718 '''Decode the marshalled node data | |
| 719 ''' | |
| 720 if __debug__: | |
| 721 print >>hyperdb.DEBUG, 'unserialise', classname, node | |
| 722 properties = self.getclass(classname).getprops() | |
| 723 d = {} | |
| 724 for k, v in node.items(): | |
| 725 # if the property doesn't exist, or is the "retired" flag then | |
| 726 # it won't be in the properties dict | |
| 727 if not properties.has_key(k): | |
| 728 d[k] = v | |
| 729 continue | |
| 730 | |
| 731 # get the property spec | |
| 732 prop = properties[k] | |
| 733 | |
| 734 if isinstance(prop, Date) and v is not None: | |
| 735 d[k] = date.Date(v) | |
| 736 elif isinstance(prop, Interval) and v is not None: | |
| 737 d[k] = date.Interval(v) | |
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738 elif isinstance(prop, Password) and v is not None: |
| 1165 | 739 p = password.Password() |
| 740 p.unpack(v) | |
| 741 d[k] = p | |
|
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742 elif (isinstance(prop, Boolean) or isinstance(prop, Number)) and v is not None: |
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743 d[k]=float(v) |
| 1165 | 744 else: |
| 745 d[k] = v | |
| 746 return d | |
| 747 | |
| 748 def hasnode(self, classname, nodeid): | |
| 749 ''' Determine if the database has a given node. | |
| 750 ''' | |
| 751 sql = 'select count(*) from _%s where id=%s'%(classname, self.arg) | |
| 752 if __debug__: | |
| 753 print >>hyperdb.DEBUG, 'hasnode', (self, sql, nodeid) | |
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754 self.cursor.execute(sql, (nodeid,)) |
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755 return int(self.cursor.fetchone()[0]) |
| 1165 | 756 |
| 757 def countnodes(self, classname): | |
| 758 ''' Count the number of nodes that exist for a particular Class. | |
| 759 ''' | |
| 760 sql = 'select count(*) from _%s'%classname | |
| 761 if __debug__: | |
| 762 print >>hyperdb.DEBUG, 'countnodes', (self, sql) | |
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763 self.cursor.execute(sql) |
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764 return self.cursor.fetchone()[0] |
| 1165 | 765 |
| 766 def getnodeids(self, classname, retired=0): | |
| 767 ''' Retrieve all the ids of the nodes for a particular Class. | |
| 768 | |
| 769 Set retired=None to get all nodes. Otherwise it'll get all the | |
| 770 retired or non-retired nodes, depending on the flag. | |
| 771 ''' | |
| 772 # flip the sense of the flag if we don't want all of them | |
| 773 if retired is not None: | |
| 774 retired = not retired | |
| 775 sql = 'select id from _%s where __retired__ <> %s'%(classname, self.arg) | |
| 776 if __debug__: | |
| 777 print >>hyperdb.DEBUG, 'getnodeids', (self, sql, retired) | |
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778 self.cursor.execute(sql, (retired,)) |
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779 return [x[0] for x in self.cursor.fetchall()] |
| 1165 | 780 |
| 781 def addjournal(self, classname, nodeid, action, params, creator=None, | |
| 782 creation=None): | |
| 783 ''' Journal the Action | |
| 784 'action' may be: | |
| 785 | |
| 786 'create' or 'set' -- 'params' is a dictionary of property values | |
| 787 'link' or 'unlink' -- 'params' is (classname, nodeid, propname) | |
| 788 'retire' -- 'params' is None | |
| 789 ''' | |
| 790 # serialise the parameters now if necessary | |
| 791 if isinstance(params, type({})): | |
| 792 if action in ('set', 'create'): | |
| 793 params = self.serialise(classname, params) | |
| 794 | |
| 795 # handle supply of the special journalling parameters (usually | |
| 796 # supplied on importing an existing database) | |
| 797 if creator: | |
| 798 journaltag = creator | |
| 799 else: | |
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800 journaltag = self.curuserid |
| 1165 | 801 if creation: |
| 802 journaldate = creation.serialise() | |
| 803 else: | |
| 804 journaldate = date.Date().serialise() | |
| 805 | |
| 806 # create the journal entry | |
| 807 cols = ','.join('nodeid date tag action params'.split()) | |
| 808 | |
| 809 if __debug__: | |
| 810 print >>hyperdb.DEBUG, 'addjournal', (nodeid, journaldate, | |
| 811 journaltag, action, params) | |
| 812 | |
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813 self.save_journal(classname, cols, nodeid, journaldate, |
| 1165 | 814 journaltag, action, params) |
| 815 | |
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816 def save_journal(self, classname, cols, nodeid, journaldate, |
| 1165 | 817 journaltag, action, params): |
| 818 ''' Save the journal entry to the database | |
| 819 ''' | |
| 820 raise NotImplemented | |
| 821 | |
| 822 def getjournal(self, classname, nodeid): | |
| 823 ''' get the journal for id | |
| 824 ''' | |
| 825 # make sure the node exists | |
| 826 if not self.hasnode(classname, nodeid): | |
| 827 raise IndexError, '%s has no node %s'%(classname, nodeid) | |
| 828 | |
| 829 cols = ','.join('nodeid date tag action params'.split()) | |
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830 return self.load_journal(classname, cols, nodeid) |
| 1165 | 831 |
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832 def load_journal(self, classname, cols, nodeid): |
| 1165 | 833 ''' Load the journal from the database |
| 834 ''' | |
| 835 raise NotImplemented | |
| 836 | |
| 837 def pack(self, pack_before): | |
| 838 ''' Delete all journal entries except "create" before 'pack_before'. | |
| 839 ''' | |
| 840 # get a 'yyyymmddhhmmss' version of the date | |
| 841 date_stamp = pack_before.serialise() | |
| 842 | |
| 843 # do the delete | |
| 844 for classname in self.classes.keys(): | |
| 845 sql = "delete from %s__journal where date<%s and "\ | |
| 846 "action<>'create'"%(classname, self.arg) | |
| 847 if __debug__: | |
| 848 print >>hyperdb.DEBUG, 'pack', (self, sql, date_stamp) | |
|
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849 self.cursor.execute(sql, (date_stamp,)) |
| 1165 | 850 |
| 851 def sql_commit(self): | |
| 852 ''' Actually commit to the database. | |
| 853 ''' | |
| 854 self.conn.commit() | |
| 855 | |
| 856 def commit(self): | |
| 857 ''' Commit the current transactions. | |
| 858 | |
| 859 Save all data changed since the database was opened or since the | |
| 860 last commit() or rollback(). | |
| 861 ''' | |
| 862 if __debug__: | |
| 863 print >>hyperdb.DEBUG, 'commit', (self,) | |
| 864 | |
| 865 # commit the database | |
| 866 self.sql_commit() | |
| 867 | |
| 868 # now, do all the other transaction stuff | |
| 869 reindex = {} | |
| 870 for method, args in self.transactions: | |
| 871 reindex[method(*args)] = 1 | |
| 872 | |
| 873 # reindex the nodes that request it | |
| 874 for classname, nodeid in filter(None, reindex.keys()): | |
| 875 print >>hyperdb.DEBUG, 'commit.reindex', (classname, nodeid) | |
| 876 self.getclass(classname).index(nodeid) | |
| 877 | |
| 878 # save the indexer state | |
| 879 self.indexer.save_index() | |
| 880 | |
| 881 # clear out the transactions | |
| 882 self.transactions = [] | |
| 883 | |
| 884 def rollback(self): | |
| 885 ''' Reverse all actions from the current transaction. | |
| 886 | |
| 887 Undo all the changes made since the database was opened or the last | |
| 888 commit() or rollback() was performed. | |
| 889 ''' | |
| 890 if __debug__: | |
| 891 print >>hyperdb.DEBUG, 'rollback', (self,) | |
| 892 | |
| 893 # roll back | |
| 894 self.conn.rollback() | |
| 895 | |
| 896 # roll back "other" transaction stuff | |
| 897 for method, args in self.transactions: | |
| 898 # delete temporary files | |
| 899 if method == self.doStoreFile: | |
| 900 self.rollbackStoreFile(*args) | |
| 901 self.transactions = [] | |
| 902 | |
| 903 def doSaveNode(self, classname, nodeid, node): | |
| 904 ''' dummy that just generates a reindex event | |
| 905 ''' | |
| 906 # return the classname, nodeid so we reindex this content | |
| 907 return (classname, nodeid) | |
| 908 | |
| 909 def close(self): | |
| 910 ''' Close off the connection. | |
| 911 ''' | |
| 912 self.conn.close() | |
|
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913 if self.lockfile is not None: |
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914 locking.release_lock(self.lockfile) |
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915 if self.lockfile is not None: |
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916 self.lockfile.close() |
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917 self.lockfile = None |
| 1165 | 918 |
| 919 # | |
| 920 # The base Class class | |
| 921 # | |
| 922 class Class(hyperdb.Class): | |
| 923 ''' The handle to a particular class of nodes in a hyperdatabase. | |
| 924 | |
| 925 All methods except __repr__ and getnode must be implemented by a | |
| 926 concrete backend Class. | |
| 927 ''' | |
| 928 | |
| 929 def __init__(self, db, classname, **properties): | |
| 930 '''Create a new class with a given name and property specification. | |
| 931 | |
| 932 'classname' must not collide with the name of an existing class, | |
| 933 or a ValueError is raised. The keyword arguments in 'properties' | |
| 934 must map names to property objects, or a TypeError is raised. | |
| 935 ''' | |
| 936 if (properties.has_key('creation') or properties.has_key('activity') | |
| 937 or properties.has_key('creator')): | |
| 938 raise ValueError, '"creation", "activity" and "creator" are '\ | |
| 939 'reserved' | |
| 940 | |
| 941 self.classname = classname | |
| 942 self.properties = properties | |
| 943 self.db = weakref.proxy(db) # use a weak ref to avoid circularity | |
| 944 self.key = '' | |
| 945 | |
| 946 # should we journal changes (default yes) | |
| 947 self.do_journal = 1 | |
| 948 | |
| 949 # do the db-related init stuff | |
| 950 db.addclass(self) | |
| 951 | |
| 952 self.auditors = {'create': [], 'set': [], 'retire': []} | |
| 953 self.reactors = {'create': [], 'set': [], 'retire': []} | |
| 954 | |
| 955 def schema(self): | |
| 956 ''' A dumpable version of the schema that we can store in the | |
| 957 database | |
| 958 ''' | |
| 959 return (self.key, [(x, repr(y)) for x,y in self.properties.items()]) | |
| 960 | |
| 961 def enableJournalling(self): | |
| 962 '''Turn journalling on for this class | |
| 963 ''' | |
| 964 self.do_journal = 1 | |
| 965 | |
| 966 def disableJournalling(self): | |
| 967 '''Turn journalling off for this class | |
| 968 ''' | |
| 969 self.do_journal = 0 | |
| 970 | |
| 971 # Editing nodes: | |
| 972 def create(self, **propvalues): | |
| 973 ''' Create a new node of this class and return its id. | |
| 974 | |
| 975 The keyword arguments in 'propvalues' map property names to values. | |
| 976 | |
| 977 The values of arguments must be acceptable for the types of their | |
| 978 corresponding properties or a TypeError is raised. | |
| 979 | |
| 980 If this class has a key property, it must be present and its value | |
| 981 must not collide with other key strings or a ValueError is raised. | |
| 982 | |
| 983 Any other properties on this class that are missing from the | |
| 984 'propvalues' dictionary are set to None. | |
| 985 | |
| 986 If an id in a link or multilink property does not refer to a valid | |
| 987 node, an IndexError is raised. | |
| 988 ''' | |
|
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989 self.fireAuditors('create', None, propvalues) |
|
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|
990 newid = self.create_inner(**propvalues) |
|
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991 self.fireReactors('create', newid, None) |
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992 return newid |
|
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|
993 |
|
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|
994 def create_inner(self, **propvalues): |
|
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|
995 ''' Called by create, in-between the audit and react calls. |
|
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|
996 ''' |
| 1165 | 997 if propvalues.has_key('id'): |
| 998 raise KeyError, '"id" is reserved' | |
| 999 | |
| 1000 if self.db.journaltag is None: | |
| 1001 raise DatabaseError, 'Database open read-only' | |
| 1002 | |
| 1003 if propvalues.has_key('creation') or propvalues.has_key('activity'): | |
| 1004 raise KeyError, '"creation" and "activity" are reserved' | |
| 1005 | |
| 1006 # new node's id | |
| 1007 newid = self.db.newid(self.classname) | |
| 1008 | |
| 1009 # validate propvalues | |
| 1010 num_re = re.compile('^\d+$') | |
| 1011 for key, value in propvalues.items(): | |
| 1012 if key == self.key: | |
| 1013 try: | |
| 1014 self.lookup(value) | |
| 1015 except KeyError: | |
| 1016 pass | |
| 1017 else: | |
| 1018 raise ValueError, 'node with key "%s" exists'%value | |
| 1019 | |
| 1020 # try to handle this property | |
| 1021 try: | |
| 1022 prop = self.properties[key] | |
| 1023 except KeyError: | |
| 1024 raise KeyError, '"%s" has no property "%s"'%(self.classname, | |
| 1025 key) | |
| 1026 | |
| 1027 if value is not None and isinstance(prop, Link): | |
| 1028 if type(value) != type(''): | |
| 1029 raise ValueError, 'link value must be String' | |
| 1030 link_class = self.properties[key].classname | |
| 1031 # if it isn't a number, it's a key | |
| 1032 if not num_re.match(value): | |
| 1033 try: | |
| 1034 value = self.db.classes[link_class].lookup(value) | |
| 1035 except (TypeError, KeyError): | |
| 1036 raise IndexError, 'new property "%s": %s not a %s'%( | |
| 1037 key, value, link_class) | |
| 1038 elif not self.db.getclass(link_class).hasnode(value): | |
| 1039 raise IndexError, '%s has no node %s'%(link_class, value) | |
| 1040 | |
| 1041 # save off the value | |
| 1042 propvalues[key] = value | |
| 1043 | |
| 1044 # register the link with the newly linked node | |
| 1045 if self.do_journal and self.properties[key].do_journal: | |
| 1046 self.db.addjournal(link_class, value, 'link', | |
| 1047 (self.classname, newid, key)) | |
| 1048 | |
| 1049 elif isinstance(prop, Multilink): | |
| 1050 if type(value) != type([]): | |
| 1051 raise TypeError, 'new property "%s" not a list of ids'%key | |
| 1052 | |
| 1053 # clean up and validate the list of links | |
| 1054 link_class = self.properties[key].classname | |
| 1055 l = [] | |
| 1056 for entry in value: | |
| 1057 if type(entry) != type(''): | |
| 1058 raise ValueError, '"%s" multilink value (%r) '\ | |
| 1059 'must contain Strings'%(key, value) | |
| 1060 # if it isn't a number, it's a key | |
| 1061 if not num_re.match(entry): | |
| 1062 try: | |
| 1063 entry = self.db.classes[link_class].lookup(entry) | |
| 1064 except (TypeError, KeyError): | |
| 1065 raise IndexError, 'new property "%s": %s not a %s'%( | |
| 1066 key, entry, self.properties[key].classname) | |
| 1067 l.append(entry) | |
| 1068 value = l | |
| 1069 propvalues[key] = value | |
| 1070 | |
| 1071 # handle additions | |
| 1072 for nodeid in value: | |
| 1073 if not self.db.getclass(link_class).hasnode(nodeid): | |
| 1074 raise IndexError, '%s has no node %s'%(link_class, | |
| 1075 nodeid) | |
| 1076 # register the link with the newly linked node | |
| 1077 if self.do_journal and self.properties[key].do_journal: | |
| 1078 self.db.addjournal(link_class, nodeid, 'link', | |
| 1079 (self.classname, newid, key)) | |
| 1080 | |
| 1081 elif isinstance(prop, String): | |
|
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diff
changeset
|
1082 if type(value) != type('') and type(value) != type(u''): |
| 1165 | 1083 raise TypeError, 'new property "%s" not a string'%key |
| 1084 | |
| 1085 elif isinstance(prop, Password): | |
| 1086 if not isinstance(value, password.Password): | |
| 1087 raise TypeError, 'new property "%s" not a Password'%key | |
| 1088 | |
| 1089 elif isinstance(prop, Date): | |
| 1090 if value is not None and not isinstance(value, date.Date): | |
| 1091 raise TypeError, 'new property "%s" not a Date'%key | |
| 1092 | |
| 1093 elif isinstance(prop, Interval): | |
| 1094 if value is not None and not isinstance(value, date.Interval): | |
| 1095 raise TypeError, 'new property "%s" not an Interval'%key | |
| 1096 | |
| 1097 elif value is not None and isinstance(prop, Number): | |
| 1098 try: | |
| 1099 float(value) | |
| 1100 except ValueError: | |
| 1101 raise TypeError, 'new property "%s" not numeric'%key | |
| 1102 | |
| 1103 elif value is not None and isinstance(prop, Boolean): | |
| 1104 try: | |
| 1105 int(value) | |
| 1106 except ValueError: | |
| 1107 raise TypeError, 'new property "%s" not boolean'%key | |
| 1108 | |
| 1109 # make sure there's data where there needs to be | |
| 1110 for key, prop in self.properties.items(): | |
| 1111 if propvalues.has_key(key): | |
| 1112 continue | |
| 1113 if key == self.key: | |
| 1114 raise ValueError, 'key property "%s" is required'%key | |
| 1115 if isinstance(prop, Multilink): | |
| 1116 propvalues[key] = [] | |
| 1117 else: | |
| 1118 propvalues[key] = None | |
| 1119 | |
| 1120 # done | |
| 1121 self.db.addnode(self.classname, newid, propvalues) | |
| 1122 if self.do_journal: | |
|
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|
1123 self.db.addjournal(self.classname, newid, 'create', {}) |
| 1165 | 1124 |
| 1125 return newid | |
| 1126 | |
| 1127 def export_list(self, propnames, nodeid): | |
| 1128 ''' Export a node - generate a list of CSV-able data in the order | |
| 1129 specified by propnames for the given node. | |
| 1130 ''' | |
| 1131 properties = self.getprops() | |
| 1132 l = [] | |
| 1133 for prop in propnames: | |
| 1134 proptype = properties[prop] | |
| 1135 value = self.get(nodeid, prop) | |
| 1136 # "marshal" data where needed | |
| 1137 if value is None: | |
| 1138 pass | |
| 1139 elif isinstance(proptype, hyperdb.Date): | |
| 1140 value = value.get_tuple() | |
| 1141 elif isinstance(proptype, hyperdb.Interval): | |
| 1142 value = value.get_tuple() | |
| 1143 elif isinstance(proptype, hyperdb.Password): | |
| 1144 value = str(value) | |
| 1145 l.append(repr(value)) | |
|
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|
1146 l.append(self.is_retired(nodeid)) |
| 1165 | 1147 return l |
| 1148 | |
| 1149 def import_list(self, propnames, proplist): | |
| 1150 ''' Import a node - all information including "id" is present and | |
| 1151 should not be sanity checked. Triggers are not triggered. The | |
| 1152 journal should be initialised using the "creator" and "created" | |
| 1153 information. | |
| 1154 | |
| 1155 Return the nodeid of the node imported. | |
| 1156 ''' | |
| 1157 if self.db.journaltag is None: | |
| 1158 raise DatabaseError, 'Database open read-only' | |
| 1159 properties = self.getprops() | |
| 1160 | |
| 1161 # make the new node's property map | |
| 1162 d = {} | |
| 1163 for i in range(len(propnames)): | |
| 1164 # Use eval to reverse the repr() used to output the CSV | |
| 1165 value = eval(proplist[i]) | |
| 1166 | |
| 1167 # Figure the property for this column | |
| 1168 propname = propnames[i] | |
| 1169 prop = properties[propname] | |
| 1170 | |
| 1171 # "unmarshal" where necessary | |
| 1172 if propname == 'id': | |
| 1173 newid = value | |
| 1174 continue | |
| 1175 elif value is None: | |
| 1176 # don't set Nones | |
| 1177 continue | |
| 1178 elif isinstance(prop, hyperdb.Date): | |
| 1179 value = date.Date(value) | |
| 1180 elif isinstance(prop, hyperdb.Interval): | |
| 1181 value = date.Interval(value) | |
| 1182 elif isinstance(prop, hyperdb.Password): | |
| 1183 pwd = password.Password() | |
| 1184 pwd.unpack(value) | |
| 1185 value = pwd | |
| 1186 d[propname] = value | |
| 1187 | |
|
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|
1188 # retire? |
|
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|
1189 if int(proplist[-1]): |
|
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1190 # use the arg for __retired__ to cope with any odd database type |
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|
1191 # conversion (hello, sqlite) |
|
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1192 sql = 'update _%s set __retired__=%s where id=%s'%(self.classname, |
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1193 self.db.arg, self.db.arg) |
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1194 if __debug__: |
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1195 print >>hyperdb.DEBUG, 'retire', (self, sql, newid) |
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1196 self.db.cursor.execute(sql, (1, newid)) |
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1197 |
|
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1198 # add the node and journal |
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1199 self.db.addnode(self.classname, newid, d) |
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1200 |
| 1165 | 1201 # extract the extraneous journalling gumpf and nuke it |
| 1202 if d.has_key('creator'): | |
| 1203 creator = d['creator'] | |
| 1204 del d['creator'] | |
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1205 else: |
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1206 creator = None |
| 1165 | 1207 if d.has_key('creation'): |
| 1208 creation = d['creation'] | |
| 1209 del d['creation'] | |
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1210 else: |
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1211 creation = None |
| 1165 | 1212 if d.has_key('activity'): |
| 1213 del d['activity'] | |
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1214 self.db.addjournal(self.classname, newid, 'create', {}, creator, |
| 1165 | 1215 creation) |
| 1216 return newid | |
| 1217 | |
| 1218 _marker = [] | |
| 1219 def get(self, nodeid, propname, default=_marker, cache=1): | |
| 1220 '''Get the value of a property on an existing node of this class. | |
| 1221 | |
| 1222 'nodeid' must be the id of an existing node of this class or an | |
| 1223 IndexError is raised. 'propname' must be the name of a property | |
| 1224 of this class or a KeyError is raised. | |
| 1225 | |
| 1226 'cache' indicates whether the transaction cache should be queried | |
| 1227 for the node. If the node has been modified and you need to | |
| 1228 determine what its values prior to modification are, you need to | |
| 1229 set cache=0. | |
| 1230 ''' | |
| 1231 if propname == 'id': | |
| 1232 return nodeid | |
| 1233 | |
|
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1234 # get the node's dict |
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1235 d = self.db.getnode(self.classname, nodeid) |
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1236 |
| 1165 | 1237 if propname == 'creation': |
|
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1238 if d.has_key('creation'): |
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1239 return d['creation'] |
| 1165 | 1240 else: |
| 1241 return date.Date() | |
| 1242 if propname == 'activity': | |
|
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1243 if d.has_key('activity'): |
|
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Verify contents of tracker module when the tracker is opened
Richard Jones <richard@users.sourceforge.net>
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1173
diff
changeset
|
1244 return d['activity'] |
| 1165 | 1245 else: |
| 1246 return date.Date() | |
| 1247 if propname == 'creator': | |
|
1174
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Verify contents of tracker module when the tracker is opened
Richard Jones <richard@users.sourceforge.net>
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1173
diff
changeset
|
1248 if d.has_key('creator'): |
|
8e318dfaf479
Verify contents of tracker module when the tracker is opened
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parents:
1173
diff
changeset
|
1249 return d['creator'] |
| 1165 | 1250 else: |
|
1176
bd3b57859c37
On second thought, that last checkin was dumb.
Richard Jones <richard@users.sourceforge.net>
parents:
1175
diff
changeset
|
1251 return self.db.curuserid |
| 1165 | 1252 |
| 1253 # get the property (raises KeyErorr if invalid) | |
| 1254 prop = self.properties[propname] | |
| 1255 | |
| 1256 if not d.has_key(propname): | |
| 1257 if default is self._marker: | |
| 1258 if isinstance(prop, Multilink): | |
| 1259 return [] | |
| 1260 else: | |
| 1261 return None | |
| 1262 else: | |
| 1263 return default | |
| 1264 | |
| 1265 # don't pass our list to other code | |
| 1266 if isinstance(prop, Multilink): | |
| 1267 return d[propname][:] | |
| 1268 | |
| 1269 return d[propname] | |
| 1270 | |
| 1271 def getnode(self, nodeid, cache=1): | |
| 1272 ''' Return a convenience wrapper for the node. | |
| 1273 | |
| 1274 'nodeid' must be the id of an existing node of this class or an | |
| 1275 IndexError is raised. | |
| 1276 | |
| 1277 'cache' indicates whether the transaction cache should be queried | |
| 1278 for the node. If the node has been modified and you need to | |
| 1279 determine what its values prior to modification are, you need to | |
| 1280 set cache=0. | |
| 1281 ''' | |
| 1282 return Node(self, nodeid, cache=cache) | |
| 1283 | |
| 1284 def set(self, nodeid, **propvalues): | |
| 1285 '''Modify a property on an existing node of this class. | |
| 1286 | |
| 1287 'nodeid' must be the id of an existing node of this class or an | |
| 1288 IndexError is raised. | |
| 1289 | |
| 1290 Each key in 'propvalues' must be the name of a property of this | |
| 1291 class or a KeyError is raised. | |
| 1292 | |
| 1293 All values in 'propvalues' must be acceptable types for their | |
| 1294 corresponding properties or a TypeError is raised. | |
| 1295 | |
| 1296 If the value of the key property is set, it must not collide with | |
| 1297 other key strings or a ValueError is raised. | |
| 1298 | |
| 1299 If the value of a Link or Multilink property contains an invalid | |
| 1300 node id, a ValueError is raised. | |
| 1301 ''' | |
| 1302 if not propvalues: | |
| 1303 return propvalues | |
| 1304 | |
| 1305 if propvalues.has_key('creation') or propvalues.has_key('activity'): | |
| 1306 raise KeyError, '"creation" and "activity" are reserved' | |
| 1307 | |
| 1308 if propvalues.has_key('id'): | |
| 1309 raise KeyError, '"id" is reserved' | |
| 1310 | |
| 1311 if self.db.journaltag is None: | |
| 1312 raise DatabaseError, 'Database open read-only' | |
| 1313 | |
| 1314 self.fireAuditors('set', nodeid, propvalues) | |
| 1315 # Take a copy of the node dict so that the subsequent set | |
| 1316 # operation doesn't modify the oldvalues structure. | |
| 1317 # XXX used to try the cache here first | |
| 1318 oldvalues = copy.deepcopy(self.db.getnode(self.classname, nodeid)) | |
| 1319 | |
| 1320 node = self.db.getnode(self.classname, nodeid) | |
| 1321 if self.is_retired(nodeid): | |
| 1322 raise IndexError, 'Requested item is retired' | |
| 1323 num_re = re.compile('^\d+$') | |
| 1324 | |
| 1325 # if the journal value is to be different, store it in here | |
| 1326 journalvalues = {} | |
| 1327 | |
| 1328 # remember the add/remove stuff for multilinks, making it easier | |
| 1329 # for the Database layer to do its stuff | |
| 1330 multilink_changes = {} | |
| 1331 | |
| 1332 for propname, value in propvalues.items(): | |
| 1333 # check to make sure we're not duplicating an existing key | |
| 1334 if propname == self.key and node[propname] != value: | |
| 1335 try: | |
| 1336 self.lookup(value) | |
| 1337 except KeyError: | |
| 1338 pass | |
| 1339 else: | |
| 1340 raise ValueError, 'node with key "%s" exists'%value | |
| 1341 | |
| 1342 # this will raise the KeyError if the property isn't valid | |
| 1343 # ... we don't use getprops() here because we only care about | |
| 1344 # the writeable properties. | |
|
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|
1345 try: |
|
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|
1346 prop = self.properties[propname] |
|
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|
1347 except KeyError: |
|
8e318dfaf479
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diff
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|
1348 raise KeyError, '"%s" has no property named "%s"'%( |
|
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diff
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|
1349 self.classname, propname) |
| 1165 | 1350 |
| 1351 # if the value's the same as the existing value, no sense in | |
| 1352 # doing anything | |
|
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61ad556cfc8d
working toward 0.5.2 release
Richard Jones <richard@users.sourceforge.net>
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diff
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|
1353 current = node.get(propname, None) |
|
61ad556cfc8d
working toward 0.5.2 release
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diff
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|
1354 if value == current: |
| 1165 | 1355 del propvalues[propname] |
| 1356 continue | |
|
1304
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|
1357 journalvalues[propname] = current |
| 1165 | 1358 |
| 1359 # do stuff based on the prop type | |
| 1360 if isinstance(prop, Link): | |
| 1361 link_class = prop.classname | |
| 1362 # if it isn't a number, it's a key | |
| 1363 if value is not None and not isinstance(value, type('')): | |
| 1364 raise ValueError, 'property "%s" link value be a string'%( | |
| 1365 propname) | |
| 1366 if isinstance(value, type('')) and not num_re.match(value): | |
| 1367 try: | |
| 1368 value = self.db.classes[link_class].lookup(value) | |
| 1369 except (TypeError, KeyError): | |
| 1370 raise IndexError, 'new property "%s": %s not a %s'%( | |
| 1371 propname, value, prop.classname) | |
| 1372 | |
| 1373 if (value is not None and | |
| 1374 not self.db.getclass(link_class).hasnode(value)): | |
| 1375 raise IndexError, '%s has no node %s'%(link_class, value) | |
| 1376 | |
| 1377 if self.do_journal and prop.do_journal: | |
| 1378 # register the unlink with the old linked node | |
| 1379 if node[propname] is not None: | |
| 1380 self.db.addjournal(link_class, node[propname], 'unlink', | |
| 1381 (self.classname, nodeid, propname)) | |
| 1382 | |
| 1383 # register the link with the newly linked node | |
| 1384 if value is not None: | |
| 1385 self.db.addjournal(link_class, value, 'link', | |
| 1386 (self.classname, nodeid, propname)) | |
| 1387 | |
| 1388 elif isinstance(prop, Multilink): | |
| 1389 if type(value) != type([]): | |
| 1390 raise TypeError, 'new property "%s" not a list of'\ | |
| 1391 ' ids'%propname | |
| 1392 link_class = self.properties[propname].classname | |
| 1393 l = [] | |
| 1394 for entry in value: | |
| 1395 # if it isn't a number, it's a key | |
| 1396 if type(entry) != type(''): | |
| 1397 raise ValueError, 'new property "%s" link value ' \ | |
| 1398 'must be a string'%propname | |
| 1399 if not num_re.match(entry): | |
| 1400 try: | |
| 1401 entry = self.db.classes[link_class].lookup(entry) | |
| 1402 except (TypeError, KeyError): | |
| 1403 raise IndexError, 'new property "%s": %s not a %s'%( | |
| 1404 propname, entry, | |
| 1405 self.properties[propname].classname) | |
| 1406 l.append(entry) | |
| 1407 value = l | |
| 1408 propvalues[propname] = value | |
| 1409 | |
| 1410 # figure the journal entry for this property | |
| 1411 add = [] | |
| 1412 remove = [] | |
| 1413 | |
| 1414 # handle removals | |
| 1415 if node.has_key(propname): | |
| 1416 l = node[propname] | |
| 1417 else: | |
| 1418 l = [] | |
| 1419 for id in l[:]: | |
| 1420 if id in value: | |
| 1421 continue | |
| 1422 # register the unlink with the old linked node | |
| 1423 if self.do_journal and self.properties[propname].do_journal: | |
| 1424 self.db.addjournal(link_class, id, 'unlink', | |
| 1425 (self.classname, nodeid, propname)) | |
| 1426 l.remove(id) | |
| 1427 remove.append(id) | |
| 1428 | |
| 1429 # handle additions | |
| 1430 for id in value: | |
| 1431 if not self.db.getclass(link_class).hasnode(id): | |
| 1432 raise IndexError, '%s has no node %s'%(link_class, id) | |
| 1433 if id in l: | |
| 1434 continue | |
| 1435 # register the link with the newly linked node | |
| 1436 if self.do_journal and self.properties[propname].do_journal: | |
| 1437 self.db.addjournal(link_class, id, 'link', | |
| 1438 (self.classname, nodeid, propname)) | |
| 1439 l.append(id) | |
| 1440 add.append(id) | |
| 1441 | |
| 1442 # figure the journal entry | |
| 1443 l = [] | |
| 1444 if add: | |
| 1445 l.append(('+', add)) | |
| 1446 if remove: | |
| 1447 l.append(('-', remove)) | |
| 1448 multilink_changes[propname] = (add, remove) | |
| 1449 if l: | |
| 1450 journalvalues[propname] = tuple(l) | |
| 1451 | |
| 1452 elif isinstance(prop, String): | |
|
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diff
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|
1453 if value is not None and type(value) != type('') and type(value) != type(u''): |
| 1165 | 1454 raise TypeError, 'new property "%s" not a string'%propname |
| 1455 | |
| 1456 elif isinstance(prop, Password): | |
| 1457 if not isinstance(value, password.Password): | |
| 1458 raise TypeError, 'new property "%s" not a Password'%propname | |
| 1459 propvalues[propname] = value | |
| 1460 | |
| 1461 elif value is not None and isinstance(prop, Date): | |
| 1462 if not isinstance(value, date.Date): | |
| 1463 raise TypeError, 'new property "%s" not a Date'% propname | |
| 1464 propvalues[propname] = value | |
| 1465 | |
| 1466 elif value is not None and isinstance(prop, Interval): | |
| 1467 if not isinstance(value, date.Interval): | |
| 1468 raise TypeError, 'new property "%s" not an '\ | |
| 1469 'Interval'%propname | |
| 1470 propvalues[propname] = value | |
| 1471 | |
| 1472 elif value is not None and isinstance(prop, Number): | |
| 1473 try: | |
| 1474 float(value) | |
| 1475 except ValueError: | |
| 1476 raise TypeError, 'new property "%s" not numeric'%propname | |
| 1477 | |
| 1478 elif value is not None and isinstance(prop, Boolean): | |
| 1479 try: | |
| 1480 int(value) | |
| 1481 except ValueError: | |
| 1482 raise TypeError, 'new property "%s" not boolean'%propname | |
| 1483 | |
| 1484 # nothing to do? | |
| 1485 if not propvalues: | |
| 1486 return propvalues | |
| 1487 | |
| 1488 # do the set, and journal it | |
|
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1489 self.db.setnode(self.classname, nodeid, propvalues, multilink_changes) |
| 1165 | 1490 |
| 1491 if self.do_journal: | |
|
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1492 self.db.addjournal(self.classname, nodeid, 'set', journalvalues) |
| 1165 | 1493 |
| 1494 self.fireReactors('set', nodeid, oldvalues) | |
| 1495 | |
| 1496 return propvalues | |
| 1497 | |
| 1498 def retire(self, nodeid): | |
| 1499 '''Retire a node. | |
| 1500 | |
| 1501 The properties on the node remain available from the get() method, | |
| 1502 and the node's id is never reused. | |
| 1503 | |
| 1504 Retired nodes are not returned by the find(), list(), or lookup() | |
| 1505 methods, and other nodes may reuse the values of their key properties. | |
| 1506 ''' | |
| 1507 if self.db.journaltag is None: | |
| 1508 raise DatabaseError, 'Database open read-only' | |
| 1509 | |
|
1345
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|
1510 self.fireAuditors('retire', nodeid, None) |
|
618aa9c37d65
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|
1511 |
|
1222
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
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diff
changeset
|
1512 # use the arg for __retired__ to cope with any odd database type |
|
bc3bc3248dd1
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diff
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|
1513 # conversion (hello, sqlite) |
|
bc3bc3248dd1
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diff
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|
1514 sql = 'update _%s set __retired__=%s where id=%s'%(self.classname, |
|
bc3bc3248dd1
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diff
changeset
|
1515 self.db.arg, self.db.arg) |
| 1165 | 1516 if __debug__: |
| 1517 print >>hyperdb.DEBUG, 'retire', (self, sql, nodeid) | |
|
1222
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diff
changeset
|
1518 self.db.cursor.execute(sql, (1, nodeid)) |
| 1165 | 1519 |
|
1345
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|
1520 self.fireReactors('retire', nodeid, None) |
|
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diff
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|
1521 |
| 1165 | 1522 def is_retired(self, nodeid): |
| 1523 '''Return true if the node is rerired | |
| 1524 ''' | |
| 1525 sql = 'select __retired__ from _%s where id=%s'%(self.classname, | |
| 1526 self.db.arg) | |
| 1527 if __debug__: | |
| 1528 print >>hyperdb.DEBUG, 'is_retired', (self, sql, nodeid) | |
|
1183
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Some speedups - both of the SQL backends can handle using only one cursor.
Richard Jones <richard@users.sourceforge.net>
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diff
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|
1529 self.db.cursor.execute(sql, (nodeid,)) |
|
08a13a84ed43
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|
1530 return int(self.db.sql_fetchone()[0]) |
| 1165 | 1531 |
| 1532 def destroy(self, nodeid): | |
| 1533 '''Destroy a node. | |
| 1534 | |
| 1535 WARNING: this method should never be used except in extremely rare | |
| 1536 situations where there could never be links to the node being | |
| 1537 deleted | |
| 1538 WARNING: use retire() instead | |
| 1539 WARNING: the properties of this node will not be available ever again | |
| 1540 WARNING: really, use retire() instead | |
| 1541 | |
| 1542 Well, I think that's enough warnings. This method exists mostly to | |
| 1543 support the session storage of the cgi interface. | |
| 1544 | |
| 1545 The node is completely removed from the hyperdb, including all journal | |
| 1546 entries. It will no longer be available, and will generally break code | |
| 1547 if there are any references to the node. | |
| 1548 ''' | |
| 1549 if self.db.journaltag is None: | |
| 1550 raise DatabaseError, 'Database open read-only' | |
| 1551 self.db.destroynode(self.classname, nodeid) | |
| 1552 | |
| 1553 def history(self, nodeid): | |
| 1554 '''Retrieve the journal of edits on a particular node. | |
| 1555 | |
| 1556 'nodeid' must be the id of an existing node of this class or an | |
| 1557 IndexError is raised. | |
| 1558 | |
| 1559 The returned list contains tuples of the form | |
| 1560 | |
|
1409
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Fixed a backlog of bug reports, and worked on python 2.3 compatibility:
Richard Jones <richard@users.sourceforge.net>
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diff
changeset
|
1561 (nodeid, date, tag, action, params) |
| 1165 | 1562 |
| 1563 'date' is a Timestamp object specifying the time of the change and | |
| 1564 'tag' is the journaltag specified when the database was opened. | |
| 1565 ''' | |
| 1566 if not self.do_journal: | |
| 1567 raise ValueError, 'Journalling is disabled for this class' | |
| 1568 return self.db.getjournal(self.classname, nodeid) | |
| 1569 | |
| 1570 # Locating nodes: | |
| 1571 def hasnode(self, nodeid): | |
| 1572 '''Determine if the given nodeid actually exists | |
| 1573 ''' | |
| 1574 return self.db.hasnode(self.classname, nodeid) | |
| 1575 | |
| 1576 def setkey(self, propname): | |
| 1577 '''Select a String property of this class to be the key property. | |
| 1578 | |
| 1579 'propname' must be the name of a String property of this class or | |
| 1580 None, or a TypeError is raised. The values of the key property on | |
| 1581 all existing nodes must be unique or a ValueError is raised. | |
| 1582 ''' | |
| 1583 # XXX create an index on the key prop column | |
| 1584 prop = self.getprops()[propname] | |
| 1585 if not isinstance(prop, String): | |
| 1586 raise TypeError, 'key properties must be String' | |
| 1587 self.key = propname | |
| 1588 | |
| 1589 def getkey(self): | |
| 1590 '''Return the name of the key property for this class or None.''' | |
| 1591 return self.key | |
| 1592 | |
| 1593 def labelprop(self, default_to_id=0): | |
| 1594 ''' Return the property name for a label for the given node. | |
| 1595 | |
| 1596 This method attempts to generate a consistent label for the node. | |
| 1597 It tries the following in order: | |
| 1598 1. key property | |
| 1599 2. "name" property | |
| 1600 3. "title" property | |
| 1601 4. first property from the sorted property name list | |
| 1602 ''' | |
| 1603 k = self.getkey() | |
| 1604 if k: | |
| 1605 return k | |
| 1606 props = self.getprops() | |
| 1607 if props.has_key('name'): | |
| 1608 return 'name' | |
| 1609 elif props.has_key('title'): | |
| 1610 return 'title' | |
| 1611 if default_to_id: | |
| 1612 return 'id' | |
| 1613 props = props.keys() | |
| 1614 props.sort() | |
| 1615 return props[0] | |
| 1616 | |
| 1617 def lookup(self, keyvalue): | |
| 1618 '''Locate a particular node by its key property and return its id. | |
| 1619 | |
| 1620 If this class has no key property, a TypeError is raised. If the | |
| 1621 'keyvalue' matches one of the values for the key property among | |
| 1622 the nodes in this class, the matching node's id is returned; | |
| 1623 otherwise a KeyError is raised. | |
| 1624 ''' | |
| 1625 if not self.key: | |
| 1626 raise TypeError, 'No key property set for class %s'%self.classname | |
| 1627 | |
|
1222
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|
1628 # use the arg to handle any odd database type conversion (hello, |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
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parents:
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|
1629 # sqlite) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
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diff
changeset
|
1630 sql = "select id from _%s where _%s=%s and __retired__ <> %s"%( |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
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|
1631 self.classname, self.key, self.db.arg, self.db.arg) |
|
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added Class.find() unit test, fixed implementations
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|
1632 self.db.sql(sql, (keyvalue, 1)) |
| 1165 | 1633 |
|
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1634 # see if there was a result that's not retired |
|
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|
1635 row = self.db.sql_fetchone() |
|
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diff
changeset
|
1636 if not row: |
|
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|
1637 raise KeyError, 'No key (%s) value "%s" for "%s"'%(self.key, |
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1638 keyvalue, self.classname) |
| 1165 | 1639 |
| 1640 # return the id | |
|
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1195
diff
changeset
|
1641 return row[0] |
| 1165 | 1642 |
| 1643 def find(self, **propspec): | |
| 1644 '''Get the ids of nodes in this class which link to the given nodes. | |
| 1645 | |
|
1222
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1646 '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
|
1647 propname={nodeid:1, } |
| 1165 | 1648 'propname' must be the name of a property in this class, or a |
| 1649 KeyError is raised. That property must be a Link or Multilink | |
| 1650 property, or a TypeError is raised. | |
| 1651 | |
| 1652 Any node in this class whose 'propname' property links to any of the | |
| 1653 nodeids will be returned. Used by the full text indexing, which knows | |
| 1654 that "foo" occurs in msg1, msg3 and file7, so we have hits on these | |
| 1655 issues: | |
| 1656 | |
| 1657 db.issue.find(messages={'1':1,'3':1}, files={'7':1}) | |
| 1658 ''' | |
| 1659 if __debug__: | |
| 1660 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
|
1661 |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1662 # shortcut |
| 1165 | 1663 if not propspec: |
| 1664 return [] | |
|
1222
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 # validate the args |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1667 props = self.getprops() |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1668 propspec = propspec.items() |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1669 for propname, nodeids in propspec: |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1670 # check the prop is OK |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1671 prop = props[propname] |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1672 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
|
1673 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
|
1674 |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1675 # first, links |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1676 where = [] |
| 1165 | 1677 allvalues = () |
|
1222
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1678 a = self.db.arg |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1679 for prop, values in propspec: |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1680 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
|
1681 continue |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1682 if type(values) is type(''): |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1683 allvalues += (values,) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1684 where.append('_%s = %s'%(prop, a)) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1685 else: |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
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diff
changeset
|
1686 allvalues += tuple(values.keys()) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1687 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:
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diff
changeset
|
1688 tables = [] |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1689 if where: |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1690 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
|
1691 self.classname, ' and '.join(where))) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1692 |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
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diff
changeset
|
1693 # now multilinks |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1694 for prop, values in propspec: |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1695 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
|
1696 continue |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1697 if type(values) is type(''): |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1698 allvalues += (values,) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1699 s = a |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1700 else: |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1701 allvalues += tuple(values.keys()) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1702 s = ','.join([a]*len(values)) |
| 1165 | 1703 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
|
1704 self.classname, prop, s)) |
|
bc3bc3248dd1
added Class.find() unit test, fixed implementations
Richard Jones <richard@users.sourceforge.net>
parents:
1212
diff
changeset
|
1705 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
|
1706 self.db.sql(sql, allvalues) |
|
1195
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1707 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
|
1708 if __debug__: |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1709 print >>hyperdb.DEBUG, 'find ... ', l |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1710 return l |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1711 |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1712 def stringFind(self, **requirements): |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1713 '''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
|
1714 properties in a caseless search. |
|
e0032f4ab334
added missing stringFind to sql backends
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parents:
1189
diff
changeset
|
1715 |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
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1189
diff
changeset
|
1716 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
|
1717 |
|
e0032f4ab334
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Richard Jones <richard@users.sourceforge.net>
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1189
diff
changeset
|
1718 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
|
1719 ''' |
|
e0032f4ab334
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1189
diff
changeset
|
1720 where = [] |
|
e0032f4ab334
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Richard Jones <richard@users.sourceforge.net>
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1189
diff
changeset
|
1721 args = [] |
|
e0032f4ab334
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Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1722 for propname in requirements.keys(): |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1723 prop = self.properties[propname] |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1724 if isinstance(not prop, String): |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1725 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
|
1726 where.append(propname) |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1727 args.append(requirements[propname].lower()) |
|
e0032f4ab334
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parents:
1189
diff
changeset
|
1728 |
|
e0032f4ab334
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Richard Jones <richard@users.sourceforge.net>
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1189
diff
changeset
|
1729 # generate the where clause |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
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1189
diff
changeset
|
1730 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
|
1731 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
|
1732 self.db.sql(sql, tuple(args)) |
|
e0032f4ab334
added missing stringFind to sql backends
Richard Jones <richard@users.sourceforge.net>
parents:
1189
diff
changeset
|
1733 l = [x[0] for x in self.db.sql_fetchall()] |
| 1165 | 1734 if __debug__: |
| 1735 print >>hyperdb.DEBUG, 'find ... ', l | |
| 1736 return l | |
| 1737 | |
| 1738 def list(self): | |
| 1739 ''' Return a list of the ids of the active nodes in this class. | |
| 1740 ''' | |
| 1741 return self.db.getnodeids(self.classname, retired=0) | |
| 1742 | |
|
1249
6c24a86a12ae
Fixes for SourceForge tracker bugs.
Richard Jones <richard@users.sourceforge.net>
parents:
1244
diff
changeset
|
1743 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
|
1744 group=(None,None)): |
| 1165 | 1745 ''' Return a list of the ids of the active nodes in this class that |
| 1746 match the 'filter' spec, sorted by the group spec and then the | |
| 1747 sort spec | |
| 1748 | |
| 1749 "filterspec" is {propname: value(s)} | |
| 1750 "sort" and "group" are (dir, prop) where dir is '+', '-' or None | |
| 1751 and prop is a prop name or None | |
| 1752 "search_matches" is {nodeid: marker} | |
|
1170
af104fa52746
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Richard Jones <richard@users.sourceforge.net>
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1168
diff
changeset
|
1753 |
|
af104fa52746
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1168
diff
changeset
|
1754 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
|
1755 property value to match is a list, any one of the values in the |
|
af104fa52746
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Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
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|
1756 list may match for that property to match. |
| 1165 | 1757 ''' |
|
1205
0df08772f166
fix to SQL filtering
Richard Jones <richard@users.sourceforge.net>
parents:
1203
diff
changeset
|
1758 # 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
|
1759 if search_matches == {}: |
|
0df08772f166
fix to SQL filtering
Richard Jones <richard@users.sourceforge.net>
parents:
1203
diff
changeset
|
1760 return [] |
|
0df08772f166
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Richard Jones <richard@users.sourceforge.net>
parents:
1203
diff
changeset
|
1761 |
| 1165 | 1762 cn = self.classname |
| 1763 | |
| 1764 # figure the WHERE clause from the filterspec | |
| 1765 props = self.getprops() | |
| 1766 frum = ['_'+cn] | |
| 1767 where = [] | |
| 1768 args = [] | |
|
1168
94620e088e3a
fixes to the rdbms backends
Richard Jones <richard@users.sourceforge.net>
parents:
1165
diff
changeset
|
1769 a = self.db.arg |
| 1165 | 1770 for k, v in filterspec.items(): |
| 1771 propclass = props[k] | |
|
1170
af104fa52746
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Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1772 # now do other where clause stuff |
| 1165 | 1773 if isinstance(propclass, Multilink): |
| 1774 tn = '%s_%s'%(cn, k) | |
| 1775 frum.append(tn) | |
| 1776 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
|
1777 s = ','.join([a for x in v]) |
| 1165 | 1778 where.append('id=%s.nodeid and %s.linkid in (%s)'%(tn,tn,s)) |
| 1779 args = args + v | |
| 1780 else: | |
|
1170
af104fa52746
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Richard Jones <richard@users.sourceforge.net>
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1168
diff
changeset
|
1781 where.append('id=%s.nodeid and %s.linkid = %s'%(tn, tn, a)) |
| 1165 | 1782 args.append(v) |
|
1365
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1783 elif k == 'id': |
|
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1784 if isinstance(v, type([])): |
|
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1785 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
|
1786 where.append('%s in (%s)'%(k, s)) |
|
4884fb0860f9
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Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1787 args = args + v |
|
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1788 else: |
|
4884fb0860f9
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Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1789 where.append('%s=%s'%(k, a)) |
|
4884fb0860f9
fixed rdbms searching by ID [SF#666615]
Richard Jones <richard@users.sourceforge.net>
parents:
1351
diff
changeset
|
1790 args.append(v) |
|
1170
af104fa52746
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Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1791 elif isinstance(propclass, String): |
|
af104fa52746
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Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1792 if not isinstance(v, type([])): |
|
af104fa52746
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Richard Jones <richard@users.sourceforge.net>
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1168
diff
changeset
|
1793 v = [v] |
|
af104fa52746
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1168
diff
changeset
|
1794 |
|
af104fa52746
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Richard Jones <richard@users.sourceforge.net>
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1168
diff
changeset
|
1795 # 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
|
1796 # 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
|
1797 # they make it through the python layer happily |
|
af104fa52746
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Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1798 v = ['%%'+self.db.sql_stringquote(s)+'%%' for s in v] |
|
af104fa52746
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Richard Jones <richard@users.sourceforge.net>
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1168
diff
changeset
|
1799 |
|
af104fa52746
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Richard Jones <richard@users.sourceforge.net>
parents:
1168
diff
changeset
|
1800 # now add to the where clause |
|
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1801 where.append(' or '.join(["_%s LIKE '%s'"%(k, s) for s in v])) |
|
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1802 # note: args are embedded in the query string now |
|
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1803 elif isinstance(propclass, Link): |
|
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1804 if isinstance(v, type([])): |
|
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1805 if '-1' in v: |
|
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1806 v.remove('-1') |
|
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1807 xtra = ' or _%s is NULL'%k |
|
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1808 else: |
|
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1809 xtra = '' |
|
1295
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1810 if v: |
|
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1811 s = ','.join([a for x in v]) |
|
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1812 where.append('(_%s in (%s)%s)'%(k, s, xtra)) |
|
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1813 args = args + v |
|
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|
1814 else: |
|
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1815 where.append('_%s is NULL'%k) |
|
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1816 else: |
|
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1817 if v == '-1': |
|
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1818 v = None |
|
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1819 where.append('_%s is NULL'%k) |
|
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1820 else: |
|
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1821 where.append('_%s=%s'%(k, a)) |
|
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1822 args.append(v) |
|
1351
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1823 elif isinstance(propclass, Date): |
|
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1824 if isinstance(v, type([])): |
|
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1825 s = ','.join([a for x in v]) |
|
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1826 where.append('_%s in (%s)'%(k, s)) |
|
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1827 args = args + [date.Date(x).serialise() for x in v] |
|
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1828 else: |
|
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1829 where.append('_%s=%s'%(k, a)) |
|
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1830 args.append(date.Date(v).serialise()) |
|
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1831 elif isinstance(propclass, Interval): |
|
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1832 if isinstance(v, type([])): |
|
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1833 s = ','.join([a for x in v]) |
|
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1834 where.append('_%s in (%s)'%(k, s)) |
|
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1835 args = args + [date.Interval(x).serialise() for x in v] |
|
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1836 else: |
|
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1837 where.append('_%s=%s'%(k, a)) |
|
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1838 args.append(date.Interval(v).serialise()) |
| 1165 | 1839 else: |
| 1840 if isinstance(v, type([])): | |
|
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1841 s = ','.join([a for x in v]) |
| 1165 | 1842 where.append('_%s in (%s)'%(k, s)) |
| 1843 args = args + v | |
| 1844 else: | |
|
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1845 where.append('_%s=%s'%(k, a)) |
| 1165 | 1846 args.append(v) |
| 1847 | |
| 1848 # add results of full text search | |
| 1849 if search_matches is not None: | |
| 1850 v = search_matches.keys() | |
|
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1851 s = ','.join([a for x in v]) |
| 1165 | 1852 where.append('id in (%s)'%s) |
| 1853 args = args + v | |
| 1854 | |
|
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1855 # "grouping" is just the first-order sorting in the SQL fetch |
|
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1856 # can modify it...) |
| 1165 | 1857 orderby = [] |
| 1858 ordercols = [] | |
|
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1859 if group[0] is not None and group[1] is not None: |
|
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1860 if group[0] != '-': |
|
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1861 orderby.append('_'+group[1]) |
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1862 ordercols.append('_'+group[1]) |
|
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1863 else: |
|
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1864 orderby.append('_'+group[1]+' desc') |
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1865 ordercols.append('_'+group[1]) |
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1866 |
|
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|
1867 # now add in the sorting |
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1868 group = '' |
| 1165 | 1869 if sort[0] is not None and sort[1] is not None: |
|
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1870 direction, colname = sort |
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1871 if direction != '-': |
|
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1872 if colname == 'id': |
|
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1873 orderby.append(colname) |
|
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1874 else: |
|
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1875 orderby.append('_'+colname) |
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1876 ordercols.append('_'+colname) |
| 1165 | 1877 else: |
|
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1878 if colname == 'id': |
|
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1879 orderby.append(colname+' desc') |
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1880 ordercols.append(colname) |
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1881 else: |
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1882 orderby.append('_'+colname+' desc') |
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1883 ordercols.append('_'+colname) |
| 1165 | 1884 |
| 1885 # construct the SQL | |
| 1886 frum = ','.join(frum) | |
|
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1887 if where: |
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1888 where = ' where ' + (' and '.join(where)) |
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1889 else: |
|
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1890 where = '' |
| 1165 | 1891 cols = ['id'] |
| 1892 if orderby: | |
| 1893 cols = cols + ordercols | |
| 1894 order = ' order by %s'%(','.join(orderby)) | |
| 1895 else: | |
| 1896 order = '' | |
| 1897 cols = ','.join(cols) | |
|
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1898 sql = 'select %s from %s %s%s%s'%(cols, frum, where, group, order) |
| 1165 | 1899 args = tuple(args) |
| 1900 if __debug__: | |
|
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1901 print >>hyperdb.DEBUG, 'filter', (self, sql, args) |
|
1183
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1902 self.db.cursor.execute(sql, args) |
|
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1903 l = self.db.cursor.fetchall() |
| 1165 | 1904 |
|
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1905 # return the IDs (the first column) |
|
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1906 # XXX The filter(None, l) bit is sqlite-specific... if there's _NO_ |
|
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1907 # XXX matches to a fetch, it returns NULL instead of nothing!?! |
|
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1908 return filter(None, [row[0] for row in l]) |
|
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1909 |
| 1165 | 1910 def count(self): |
| 1911 '''Get the number of nodes in this class. | |
| 1912 | |
| 1913 If the returned integer is 'numnodes', the ids of all the nodes | |
| 1914 in this class run from 1 to numnodes, and numnodes+1 will be the | |
| 1915 id of the next node to be created in this class. | |
| 1916 ''' | |
| 1917 return self.db.countnodes(self.classname) | |
| 1918 | |
| 1919 # Manipulating properties: | |
| 1920 def getprops(self, protected=1): | |
| 1921 '''Return a dictionary mapping property names to property objects. | |
| 1922 If the "protected" flag is true, we include protected properties - | |
| 1923 those which may not be modified. | |
| 1924 ''' | |
| 1925 d = self.properties.copy() | |
| 1926 if protected: | |
| 1927 d['id'] = String() | |
| 1928 d['creation'] = hyperdb.Date() | |
| 1929 d['activity'] = hyperdb.Date() | |
|
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1930 d['creator'] = hyperdb.Link('user') |
| 1165 | 1931 return d |
| 1932 | |
| 1933 def addprop(self, **properties): | |
| 1934 '''Add properties to this class. | |
| 1935 | |
| 1936 The keyword arguments in 'properties' must map names to property | |
| 1937 objects, or a TypeError is raised. None of the keys in 'properties' | |
| 1938 may collide with the names of existing properties, or a ValueError | |
| 1939 is raised before any properties have been added. | |
| 1940 ''' | |
| 1941 for key in properties.keys(): | |
| 1942 if self.properties.has_key(key): | |
| 1943 raise ValueError, key | |
| 1944 self.properties.update(properties) | |
| 1945 | |
| 1946 def index(self, nodeid): | |
| 1947 '''Add (or refresh) the node to search indexes | |
| 1948 ''' | |
| 1949 # find all the String properties that have indexme | |
| 1950 for prop, propclass in self.getprops().items(): | |
| 1951 if isinstance(propclass, String) and propclass.indexme: | |
| 1952 try: | |
| 1953 value = str(self.get(nodeid, prop)) | |
| 1954 except IndexError: | |
| 1955 # node no longer exists - entry should be removed | |
| 1956 self.db.indexer.purge_entry((self.classname, nodeid, prop)) | |
| 1957 else: | |
| 1958 # and index them under (classname, nodeid, property) | |
| 1959 self.db.indexer.add_text((self.classname, nodeid, prop), | |
| 1960 value) | |
| 1961 | |
| 1962 | |
| 1963 # | |
| 1964 # Detector interface | |
| 1965 # | |
| 1966 def audit(self, event, detector): | |
| 1967 '''Register a detector | |
| 1968 ''' | |
| 1969 l = self.auditors[event] | |
| 1970 if detector not in l: | |
| 1971 self.auditors[event].append(detector) | |
| 1972 | |
| 1973 def fireAuditors(self, action, nodeid, newvalues): | |
| 1974 '''Fire all registered auditors. | |
| 1975 ''' | |
| 1976 for audit in self.auditors[action]: | |
| 1977 audit(self.db, self, nodeid, newvalues) | |
| 1978 | |
| 1979 def react(self, event, detector): | |
| 1980 '''Register a detector | |
| 1981 ''' | |
| 1982 l = self.reactors[event] | |
| 1983 if detector not in l: | |
| 1984 self.reactors[event].append(detector) | |
| 1985 | |
| 1986 def fireReactors(self, action, nodeid, oldvalues): | |
| 1987 '''Fire all registered reactors. | |
| 1988 ''' | |
| 1989 for react in self.reactors[action]: | |
| 1990 react(self.db, self, nodeid, oldvalues) | |
| 1991 | |
|
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1992 class FileClass(Class, hyperdb.FileClass): |
| 1165 | 1993 '''This class defines a large chunk of data. To support this, it has a |
| 1994 mandatory String property "content" which is typically saved off | |
| 1995 externally to the hyperdb. | |
| 1996 | |
| 1997 The default MIME type of this data is defined by the | |
| 1998 "default_mime_type" class attribute, which may be overridden by each | |
| 1999 node if the class defines a "type" String property. | |
| 2000 ''' | |
| 2001 default_mime_type = 'text/plain' | |
| 2002 | |
| 2003 def create(self, **propvalues): | |
| 2004 ''' snaffle the file propvalue and store in a file | |
| 2005 ''' | |
|
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2006 # we need to fire the auditors now, or the content property won't |
|
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2007 # be in propvalues for the auditors to play with |
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2008 self.fireAuditors('create', None, propvalues) |
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2009 |
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|
2010 # now remove the content property so it's not stored in the db |
| 1165 | 2011 content = propvalues['content'] |
| 2012 del propvalues['content'] | |
|
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2013 |
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|
2014 # do the database create |
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c70068162e64
Altered Class.create() and FileClass.create() methods...
Richard Jones <richard@users.sourceforge.net>
parents:
1417
diff
changeset
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2015 newid = Class.create_inner(self, **propvalues) |
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c70068162e64
Altered Class.create() and FileClass.create() methods...
Richard Jones <richard@users.sourceforge.net>
parents:
1417
diff
changeset
|
2016 |
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c70068162e64
Altered Class.create() and FileClass.create() methods...
Richard Jones <richard@users.sourceforge.net>
parents:
1417
diff
changeset
|
2017 # fire reactors |
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c70068162e64
Altered Class.create() and FileClass.create() methods...
Richard Jones <richard@users.sourceforge.net>
parents:
1417
diff
changeset
|
2018 self.fireReactors('create', newid, None) |
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c70068162e64
Altered Class.create() and FileClass.create() methods...
Richard Jones <richard@users.sourceforge.net>
parents:
1417
diff
changeset
|
2019 |
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c70068162e64
Altered Class.create() and FileClass.create() methods...
Richard Jones <richard@users.sourceforge.net>
parents:
1417
diff
changeset
|
2020 # store off the content as a file |
| 1165 | 2021 self.db.storefile(self.classname, newid, None, content) |
| 2022 return newid | |
| 2023 | |
| 2024 def import_list(self, propnames, proplist): | |
| 2025 ''' Trap the "content" property... | |
| 2026 ''' | |
| 2027 # dupe this list so we don't affect others | |
| 2028 propnames = propnames[:] | |
| 2029 | |
| 2030 # extract the "content" property from the proplist | |
| 2031 i = propnames.index('content') | |
| 2032 content = eval(proplist[i]) | |
| 2033 del propnames[i] | |
| 2034 del proplist[i] | |
| 2035 | |
| 2036 # do the normal import | |
| 2037 newid = Class.import_list(self, propnames, proplist) | |
| 2038 | |
| 2039 # save off the "content" file | |
| 2040 self.db.storefile(self.classname, newid, None, content) | |
| 2041 return newid | |
| 2042 | |
| 2043 _marker = [] | |
| 2044 def get(self, nodeid, propname, default=_marker, cache=1): | |
| 2045 ''' trap the content propname and get it from the file | |
| 2046 ''' | |
| 2047 poss_msg = 'Possibly a access right configuration problem.' | |
| 2048 if propname == 'content': | |
| 2049 try: | |
| 2050 return self.db.getfile(self.classname, nodeid, None) | |
| 2051 except IOError, (strerror): | |
| 2052 # BUG: by catching this we donot see an error in the log. | |
| 2053 return 'ERROR reading file: %s%s\n%s\n%s'%( | |
| 2054 self.classname, nodeid, poss_msg, strerror) | |
| 2055 if default is not self._marker: | |
| 2056 return Class.get(self, nodeid, propname, default, cache=cache) | |
| 2057 else: | |
| 2058 return Class.get(self, nodeid, propname, cache=cache) | |
| 2059 | |
| 2060 def getprops(self, protected=1): | |
| 2061 ''' In addition to the actual properties on the node, these methods | |
| 2062 provide the "content" property. If the "protected" flag is true, | |
| 2063 we include protected properties - those which may not be | |
| 2064 modified. | |
| 2065 ''' | |
| 2066 d = Class.getprops(self, protected=protected).copy() | |
| 2067 d['content'] = hyperdb.String() | |
| 2068 return d | |
| 2069 | |
| 2070 def index(self, nodeid): | |
| 2071 ''' Index the node in the search index. | |
| 2072 | |
| 2073 We want to index the content in addition to the normal String | |
| 2074 property indexing. | |
| 2075 ''' | |
| 2076 # perform normal indexing | |
| 2077 Class.index(self, nodeid) | |
| 2078 | |
| 2079 # get the content to index | |
| 2080 content = self.get(nodeid, 'content') | |
| 2081 | |
| 2082 # figure the mime type | |
| 2083 if self.properties.has_key('type'): | |
| 2084 mime_type = self.get(nodeid, 'type') | |
| 2085 else: | |
| 2086 mime_type = self.default_mime_type | |
| 2087 | |
| 2088 # and index! | |
| 2089 self.db.indexer.add_text((self.classname, nodeid, 'content'), content, | |
| 2090 mime_type) | |
| 2091 | |
| 2092 # XXX deviation from spec - was called ItemClass | |
| 2093 class IssueClass(Class, roundupdb.IssueClass): | |
| 2094 # Overridden methods: | |
| 2095 def __init__(self, db, classname, **properties): | |
| 2096 '''The newly-created class automatically includes the "messages", | |
| 2097 "files", "nosy", and "superseder" properties. If the 'properties' | |
| 2098 dictionary attempts to specify any of these properties or a | |
| 2099 "creation" or "activity" property, a ValueError is raised. | |
| 2100 ''' | |
| 2101 if not properties.has_key('title'): | |
| 2102 properties['title'] = hyperdb.String(indexme='yes') | |
| 2103 if not properties.has_key('messages'): | |
| 2104 properties['messages'] = hyperdb.Multilink("msg") | |
| 2105 if not properties.has_key('files'): | |
| 2106 properties['files'] = hyperdb.Multilink("file") | |
| 2107 if not properties.has_key('nosy'): | |
| 2108 # note: journalling is turned off as it really just wastes | |
| 2109 # space. this behaviour may be overridden in an instance | |
| 2110 properties['nosy'] = hyperdb.Multilink("user", do_journal="no") | |
| 2111 if not properties.has_key('superseder'): | |
| 2112 properties['superseder'] = hyperdb.Multilink(classname) | |
| 2113 Class.__init__(self, db, classname, **properties) | |
| 2114 |