Argument store added to updateEntityProperties.
This argument determines if an entity should be stored in the data model after its properties are updated.
It may be useful, for example, along with tasks (Task Queue API). One may want to make some modifications to an entity during execution of a task, but the developer is sure that at least one new task, which also wants to modify the entity, will be queued, so he or she can just update the entity without saving the changes to the data model, set the entity in memcache and the following task (which is to be executed very shortly) is to retrive the current entity from the memcache (without any expensive calls to the actual data model).
#!/usr/bin/python2.5
#
# Copyright 2008 the Melange authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Module containing Melange Django 1.0+ configuration for Google App Engine.
"""
import logging
import os
import sys
__authors__ = [
# alphabetical order by last name, please
'"Pawel Solyga" <pawel.solyga@gmail.com>',
]
if os.environ['SERVER_SOFTWARE'].startswith('Dev'):
# Remove the standard version of Django.
for k in [k for k in sys.modules if k.startswith('django')]:
del sys.modules[k]
# Force sys.path to have our own directory first, in case we want to import
# from it. This lets us replace the built-in Django
sys.path.insert(0, os.path.abspath(os.path.dirname(__file__)))
sys.path.insert(0, os.path.abspath('django'))
sys.path.insert(0, os.path.abspath('django.zip'))
else:
# Declare the Django version we need.
from google.appengine.dist import use_library
use_library('django', '1.0')
# Force Django to reload its settings.
from django.conf import settings
settings._target = None
# Must set this env var before importing any part of Django
os.environ['DJANGO_SETTINGS_MODULE'] = 'settings'
import django.core.signals
import django.db
# Log errors.
def log_exception(*args, **kwds):
"""Function used for logging exceptions.
"""
logging.exception('Exception in request:')
# Log all exceptions detected by Django.
django.core.signals.got_request_exception.connect(log_exception)
# Unregister the rollback event handler.
django.core.signals.got_request_exception.disconnect(
django.db._rollback_on_exception)