# -*- coding: utf-8 -*-
#
# django-ldapdb
-# Copyright (C) 2009 Bolloré telecom
+# Copyright (c) 2009-2010, Bolloré telecom
+# All rights reserved.
+#
# See AUTHORS file for a full list of contributors.
#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
+# 3. Neither the name of Bolloré telecom nor the names of its contributors
+# may be used to endorse or promote products derived from this software
+# without specific prior written permission.
#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
-# -*- coding: utf-8 -*-
-
from copy import deepcopy
import ldap
+from django.db import connections
from django.db.models.query import QuerySet as BaseQuerySet
from django.db.models.query_utils import Q
-from django.db.models.sql import BaseQuery
-from django.db.models.sql.where import WhereNode
-from granadilla.db import connection as ldap_connection
+from django.db.models.sql import Query
+from django.db.models.sql.where import WhereNode as BaseWhereNode, Constraint as BaseConstraint, AND, OR
-def compile(q):
- filterstr = ""
- for item in q.children:
- if isinstance(item, WhereNode):
- filterstr += compile(item)
- continue
- table, column, type, x, y, values = item
- if q.negated:
- filterstr += "(!(%s=%s))" % (column,values[0])
- else:
- filterstr += "(%s=%s)" % (column,values[0])
- return filterstr
+from ldapdb.backends.ldap import compiler
+from ldapdb.models.fields import CharField
-class Query(BaseQuery):
- def results_iter(self):
- # FIXME: use all object classes
- filterstr = '(objectClass=%s)' % self.model._meta.object_classes[0]
- filterstr += compile(self.where)
- filterstr = '(&%s)' % filterstr
- attrlist = [ x.db_column for x in self.model._meta.local_fields if x.db_column ]
+class Constraint(BaseConstraint):
+ """
+ An object that can be passed to WhereNode.add() and knows how to
+ pre-process itself prior to including in the WhereNode.
+
+ NOTES:
+ - we redefine this class, because when self.field is None calls
+ Field().get_db_prep_lookup(), which short-circuits our LDAP-specific code.
+ """
+ def process(self, lookup_type, value, connection):
+ """
+ Returns a tuple of data suitable for inclusion in a WhereNode
+ instance.
+ """
+ # Because of circular imports, we need to import this here.
+ from django.db.models.base import ObjectDoesNotExist
try:
- vals = ldap_connection.search_s(
- self.model._meta.dn,
- ldap.SCOPE_SUBTREE,
- filterstr=filterstr,
- attrlist=attrlist,
- )
- except:
- raise self.model.DoesNotExist
+ if self.field:
+ params = self.field.get_db_prep_lookup(lookup_type, value,
+ connection=connection, prepared=True)
+ db_type = self.field.db_type()
+ else:
+ params = CharField().get_db_prep_lookup(lookup_type, value,
+ connection=connection, prepared=True)
+ db_type = None
+ except ObjectDoesNotExist:
+ raise EmptyShortCircuit
- for dn, attrs in vals:
- row = [dn]
- for field in iter(self.model._meta.fields):
- row.append(attrs.get(field.db_column, None))
- yield row
+ return (self.alias, self.col, db_type), params
+
+class WhereNode(BaseWhereNode):
+ def add(self, data, connector):
+ if not isinstance(data, (list, tuple)):
+ super(WhereNode, self).add(data, connector)
+ return
+
+ # we replace the native Constraint by our own
+ obj, lookup_type, value = data
+ if hasattr(obj, "process"):
+ obj = Constraint(obj.alias, obj.col, obj.field)
+ super(WhereNode, self).add((obj, lookup_type, value), connector)
class QuerySet(BaseQuerySet):
- def __init__(self, model=None, query=None):
+ def __init__(self, model=None, query=None, using=None):
if not query:
- query = Query(model, None)
- super(QuerySet, self).__init__(model, query)
+ query = Query(model, WhereNode)
+ super(QuerySet, self).__init__(model=model, query=query, using=using)
+
+ def delete(self):
+ "Bulk deletion."
+ connection = connections[self.db]
+ try:
+ vals = connection.search_s(
+ self.model.base_dn,
+ self.model.search_scope,
+ filterstr=compiler.query_as_ldap(self.query),
+ attrlist=[],
+ )
+ except ldap.NO_SUCH_OBJECT:
+ return
+
+ # FIXME : there is probably a more efficient way to do this
+ for dn, attrs in vals:
+ connection.delete_s(dn)