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neuf-userinfo/ldapdb/models/fields.py
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2011-09-07 14:34:28 +02:00

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5.7 KiB
Python

# -*- coding: utf-8 -*-
#
# django-ldapdb
# Copyright (c) 2009-2011, Bolloré telecom
# All rights reserved.
#
# See AUTHORS file for a full list of contributors.
#
# 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.
#
# 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.
#
# 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.
#
from django.db.models import fields, SubfieldBase
from ldapdb import escape_ldap_filter
class CharField(fields.CharField):
def __init__(self, *args, **kwargs):
kwargs['max_length'] = 200
super(CharField, self).__init__(*args, **kwargs)
def from_ldap(self, value, connection):
if len(value) == 0:
return ''
else:
return value[0].decode(connection.charset)
def get_db_prep_lookup(self, lookup_type, value, connection, prepared=False):
"Returns field's value prepared for database lookup."
if lookup_type == 'endswith':
return ["*%s" % escape_ldap_filter(value)]
elif lookup_type == 'startswith':
return ["%s*" % escape_ldap_filter(value)]
elif lookup_type in ['contains', 'icontains']:
return ["*%s*" % escape_ldap_filter(value)]
elif lookup_type == 'exact':
return [escape_ldap_filter(value)]
elif lookup_type == 'in':
return [escape_ldap_filter(v) for v in value]
raise TypeError("CharField has invalid lookup: %s" % lookup_type)
def get_db_prep_save(self, value, connection):
return [value.encode(connection.charset)]
def get_prep_lookup(self, lookup_type, value):
"Perform preliminary non-db specific lookup checks and conversions"
if lookup_type == 'endswith':
return "*%s" % escape_ldap_filter(value)
elif lookup_type == 'startswith':
return "%s*" % escape_ldap_filter(value)
elif lookup_type in ['contains', 'icontains']:
return "*%s*" % escape_ldap_filter(value)
elif lookup_type == 'exact':
return escape_ldap_filter(value)
elif lookup_type == 'in':
return [escape_ldap_filter(v) for v in value]
raise TypeError("CharField has invalid lookup: %s" % lookup_type)
class ImageField(fields.Field):
def from_ldap(self, value, connection):
if len(value) == 0:
return ''
else:
return value[0]
def get_db_prep_lookup(self, lookup_type, value, connection, prepared=False):
"Returns field's value prepared for database lookup."
return [self.get_prep_lookup(lookup_type, value)]
def get_db_prep_save(self, value, connection):
return [value]
def get_prep_lookup(self, lookup_type, value):
"Perform preliminary non-db specific lookup checks and conversions"
raise TypeError("ImageField has invalid lookup: %s" % lookup_type)
class IntegerField(fields.IntegerField):
def from_ldap(self, value, connection):
if len(value) == 0:
return 0
else:
return int(value[0])
def get_db_prep_lookup(self, lookup_type, value, connection, prepared=False):
"Returns field's value prepared for database lookup."
return [self.get_prep_lookup(lookup_type, value)]
def get_db_prep_save(self, value, connection):
return [str(value)]
def get_prep_lookup(self, lookup_type, value):
"Perform preliminary non-db specific lookup checks and conversions"
if lookup_type in ('exact', 'gte', 'lte'):
return value
raise TypeError("IntegerField has invalid lookup: %s" % lookup_type)
class ListField(fields.Field):
__metaclass__ = SubfieldBase
def from_ldap(self, value, connection):
return value
def get_db_prep_lookup(self, lookup_type, value, connection, prepared=False):
"Returns field's value prepared for database lookup."
return [self.get_prep_lookup(lookup_type, value)]
def get_db_prep_save(self, value, connection):
return [x.encode(connection.charset) for x in value]
def get_prep_lookup(self, lookup_type, value):
"Perform preliminary non-db specific lookup checks and conversions"
if lookup_type == 'contains':
return escape_ldap_filter(value)
raise TypeError("ListField has invalid lookup: %s" % lookup_type)
def to_python(self, value):
if not value:
return []
return value