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/env python
#
# Copyright 2007 Google Inc.
#
# 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.
#
"""Errors used in the Python appinfo API, used by app developers."""
class Error(Exception):
"""Base datastore AppInfo type."""
class EmptyConfigurationFile(Error):
"""Tried to load empty configuration file"""
class MultipleConfigurationFile(Error):
"""Tried to load configuration file with multiple AppInfo objects"""
class UnknownHandlerType(Error):
"""Raised when it is not possible to determine URL mapping type."""
class UnexpectedHandlerAttribute(Error):
"""Raised when a handler type has an attribute that it does not use."""
class MissingHandlerAttribute(Error):
"""Raised when a handler is missing an attribute required by its type."""
class MissingURLMapping(Error):
"""Raised when there are no URL mappings in external appinfo."""
class TooManyURLMappings(Error):
"""Raised when there are too many URL mappings in external appinfo."""