1 # -*- coding: utf-8 -*-
4 # Copyright (c) 2009-2010, Bolloré telecom
7 # See AUTHORS file for a full list of contributors.
9 # Redistribution and use in source and binary forms, with or without modification,
10 # are permitted provided that the following conditions are met:
12 # 1. Redistributions of source code must retain the above copyright notice,
13 # this list of conditions and the following disclaimer.
15 # 2. Redistributions in binary form must reproduce the above copyright
16 # notice, this list of conditions and the following disclaimer in the
17 # documentation and/or other materials provided with the distribution.
19 # 3. Neither the name of Bolloré telecom nor the names of its contributors
20 # may be used to endorse or promote products derived from this software
21 # without specific prior written permission.
23 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
24 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
25 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26 # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
27 # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
30 # ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 class SQLCompiler(object):
38 def __init__(self, query, connection, using):
40 self.connection = connection
43 def results_iter(self):
44 if self.query.select_fields:
45 fields = self.query.select_fields
47 fields = self.query.model._meta.fields
49 attrlist = [ x.db_column for x in fields if x.db_column ]
52 vals = self.connection.search_s(
53 self.query.model.base_dn,
54 self.query.model.search_scope,
55 filterstr=self.query._ldap_filter(),
58 except ldap.NO_SUCH_OBJECT:
62 if self.query.extra_order_by:
63 ordering = self.query.extra_order_by
64 elif not self.query.default_ordering:
65 ordering = self.query.order_by
67 ordering = self.query.order_by or self.query.model._meta.ordering
69 for fieldname in ordering:
70 if fieldname.startswith('-'):
71 fieldname = fieldname[1:]
75 field = self.query.model._meta.get_field(fieldname)
76 attr_x = field.from_ldap(x[1].get(field.db_column, []), connection=self.connection)
77 attr_y = field.from_ldap(y[1].get(field.db_column, []), connection=self.connection)
78 # perform case insensitive comparison
79 if hasattr(attr_x, 'lower'):
80 attr_x = attr_x.lower()
81 if hasattr(attr_y, 'lower'):
82 attr_y = attr_y.lower()
83 val = negate and cmp(attr_y, attr_x) or cmp(attr_x, attr_y)
87 vals = sorted(vals, cmp=cmpvals)
91 for dn, attrs in vals:
92 # FIXME : This is not optimal, we retrieve more results than we need
93 # but there is probably no other options as we can't perform ordering
95 if (self.query.low_mark and pos < self.query.low_mark) or \
96 (self.query.high_mark is not None and pos >= self.query.high_mark):
100 for field in iter(fields):
101 if field.attname == 'dn':
103 elif hasattr(field, 'from_ldap'):
104 row.append(field.from_ldap(attrs.get(field.db_column, []), connection=self.connection))