# -*- coding: utf-8 -*-
#
# django-ldapdb
-# Copyright (C) 2009 Bolloré telecom
+# Copyright (C) 2009-2010 Bolloré telecom
# See AUTHORS file for a full list of contributors.
#
# This program is free software: you can redistribute it and/or modify
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
-# -*- coding: utf-8 -*-
-
from copy import deepcopy
import ldap
from django.db.models.query import QuerySet as BaseQuerySet
from django.db.models.query_utils import Q
from django.db.models.sql import Query as BaseQuery
-from django.db.models.sql.where import WhereNode as BaseWhereNode, AND, OR
+from django.db.models.sql.where import WhereNode as BaseWhereNode, Constraint as BaseConstraint, AND, OR
import ldapdb
+from ldapdb.models.fields import CharField
+
+def get_lookup_operator(lookup_type):
+ if lookup_type == 'gte':
+ return '>='
+ elif lookup_type == 'lte':
+ return '<='
+ else:
+ return '='
+
+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.
+ """
+ def process(self, lookup_type, value):
+ """
+ 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:
+ if self.field:
+ params = self.field.get_db_prep_lookup(lookup_type, value)
+ db_type = self.field.db_type()
+ else:
+ params = CharField().get_db_prep_lookup(lookup_type, value)
+ db_type = None
+ except ObjectDoesNotExist:
+ raise EmptyShortCircuit
+
+ 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)
+
def as_sql(self):
bits = []
for item in self.children:
if isinstance(item, WhereNode):
bits.append(item.as_sql())
continue
- table, column, type, x, y, values = item
+ constraint, lookup_type, y, values = item
+ comp = get_lookup_operator(lookup_type)
+ if hasattr(constraint, "col"):
+ # django 1.2
+ clause = "(%s%s%s)" % (constraint.col, comp, values)
+ else:
+ # django 1.1
+ (table, column, db_type) = constraint
+ equal_bits = [ "(%s%s%s)" % (column, comp, value) for value in values ]
+ if len(equal_bits) == 1:
+ clause = equal_bits[0]
+ else:
+ clause = '(|%s)' % ''.join(equal_bits)
if self.negated:
- bits.append('(!(%s=%s))' % (column,values[0]))
+ bits.append('(!%s)' % clause)
else:
- bits.append('(%s=%s)' % (column,values[0]))
+ bits.append(clause)
if len(bits) == 1:
return bits[0]
elif self.connector == AND:
class Query(BaseQuery):
def results_iter(self):
# FIXME: use all object classes
- filterstr = '(objectClass=%s)' % self.model._meta.object_classes[0]
+ filterstr = '(objectClass=%s)' % self.model.object_classes[0]
filterstr += self.where.as_sql()
filterstr = '(&%s)' % filterstr
attrlist = [ x.db_column for x in self.model._meta.local_fields if x.db_column ]
try:
vals = ldapdb.connection.search_s(
- self.model._meta.dn,
+ self.model.base_dn,
ldap.SCOPE_SUBTREE,
filterstr=filterstr,
attrlist=attrlist,
keys = []
for k in ordering:
attr = self.model._meta.get_field(k).db_column
- keys.append(x[1][attr])
+ keys.append(x[1].get(attr, '').lower())
return keys
vals = sorted(vals, key=lambda x: getkey(x))
# process results
for dn, attrs in vals:
- row = [dn]
+ row = []
for field in iter(self.model._meta.fields):
- row.append(attrs.get(field.db_column, None))
+ if field.attname == 'dn':
+ row.append(dn)
+ else:
+ row.append(attrs.get(field.db_column, None))
yield row
class QuerySet(BaseQuerySet):