#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2009-2011, Nicolas Clairon
# All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * 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.
# * Neither the name of the University of California, Berkeley 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 REGENTS 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 REGENTS AND 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.
try:
from pymongo import MongoClient as PymongoConnection
from pymongo import MongoReplicaSetClient as PymongoReplicaSetConnection
except ImportError:
from pymongo import Connection as PymongoConnection
from mongokit.database import Database
[docs]class CallableMixin(object):
"""
brings the callable method to a Document. usefull for the connection's
register method
"""
def __call__(self, doc=None, gen_skel=True, lang='en', fallback_lang='en'):
return self._obj_class(
doc=doc,
gen_skel=gen_skel,
collection=self.collection,
lang=lang,
fallback_lang=fallback_lang
)
_ITERABLES = (list, tuple, set, frozenset)
[docs]class MongoKitConnection(object):
def __init__(self, *args, **kwargs):
self._databases = {}
self._registered_documents = {}
super(MongoKitConnection, self).__init__(*args, **kwargs)
[docs] def register(self, obj_list):
decorator = None
if not isinstance(obj_list, _ITERABLES):
# we assume that the user used this as a decorator
# using @register syntax or using conn.register(SomeDoc)
# we stock the class object in order to return it later
decorator = obj_list
obj_list = [obj_list]
# cleanup
for db in self._databases.values():
for col in db._collections.values():
col._documents.clear()
for obj in obj_list:
if obj.__name__ in col._registered_documents:
del col._registered_documents[obj.__name__]
# register
for obj in obj_list:
CallableDocument = type(
"Callable%s" % obj.__name__,
(obj, CallableMixin),
{"_obj_class": obj, "__repr__": object.__repr__}
)
self._registered_documents[obj.__name__] = CallableDocument
# if the class object is stored, it means the user used a decorator and
# we must return the class object
if decorator is not None:
return decorator
def __getattr__(self, key):
if key in self._registered_documents:
document = self._registered_documents[key]
try:
return getattr(self[document.__database__][document.__collection__], key)
except AttributeError:
raise AttributeError("%s: __collection__ attribute not found. "
"You cannot specify the `__database__` attribute without "
"the `__collection__` attribute" % key)
else:
if key not in self._databases:
self._databases[key] = Database(self, key)
return self._databases[key]
[docs]class Connection(MongoKitConnection, PymongoConnection):
def __init__(self, *args, **kwargs):
# Specifying that it should run both the inits
super(Connection, self).__init__(*args, **kwargs)
[docs]class ReplicaSetConnection(MongoKitConnection, PymongoReplicaSetConnection):
def __init__(self, *args, **kwargs):
# Specifying that it should run both the inits
MongoKitConnection.__init__(self, *args, **kwargs)
PymongoReplicaSetConnection.__init__(self, *args, **kwargs)
MongoClient = Connection
MongoReplicaSetClient = ReplicaSetConnection