Extend taggable-mixin to support different Tag models.
Usage is pretty simple. Tag model is default in Taggable constructor but you
can call it with different model like GHOPTaskType that inherits from Tag model.
Both Taggable and Tag models have been updated and they don't use hardcoded Tag
model anymore and instead use cls of class methods or self.__class__. In case
of Taggable it's self.__tag_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."""