author | Sverre Rabbelier <srabbelier@gmail.com> |
Wed, 08 Apr 2009 22:19:05 +0000 | |
changeset 2127 | 1a0167169af3 |
parent 109 | 620f9b141567 |
permissions | -rwxr-xr-x |
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#!/usr/bin/env python |
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# |
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# Copyright 2007 Google Inc. |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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# |
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"""Errors used in the Python datastore API.""" |
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class Error(Exception): |
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"""Base datastore error type. |
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""" |
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class BadValueError(Error): |
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"""Raised by Entity.__setitem__(), Query.__setitem__(), Get(), and others |
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when a property value or filter value is invalid. |
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""" |
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class BadPropertyError(Error): |
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"""Raised by Entity.__setitem__() when a property name isn't a string. |
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""" |
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class BadRequestError(Error): |
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"""Raised by datastore calls when the parameter(s) are invalid. |
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""" |
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class EntityNotFoundError(Error): |
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"""DEPRECATED: Raised by Get() when the requested entity is not found. |
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""" |
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class BadArgumentError(Error): |
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"""Raised by Query.Order(), Iterator.Next(), and others when they're |
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passed an invalid argument. |
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""" |
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class QueryNotFoundError(Error): |
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"""DEPRECATED: Raised by Iterator methods when the Iterator is invalid. This |
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should not happen during normal usage; it protects against malicious users |
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and system errors. |
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""" |
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class TransactionNotFoundError(Error): |
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"""DEPRECATED: Raised by RunInTransaction. This is an internal error; you |
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should not see this. |
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""" |
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class Rollback(Error): |
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"""May be raised by transaction functions when they want to roll back |
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instead of committing. Note that *any* exception raised by a transaction |
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function will cause a rollback. This is purely for convenience. See |
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datastore.RunInTransaction for details. |
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""" |
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class TransactionFailedError(Error): |
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"""Raised by RunInTransaction methods when the transaction could not be |
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committed, even after retrying. This is usually due to high contention. |
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""" |
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class BadFilterError(Error): |
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"""Raised by Query.__setitem__() and Query.Run() when a filter string is |
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invalid. |
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""" |
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def __init__(self, filter): |
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self.filter = filter |
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def __str__(self): |
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return (u'BadFilterError: invalid filter: %s.' % self.filter) |
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class BadQueryError(Error): |
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"""Raised by Query when a query or query string is invalid. |
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""" |
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class BadKeyError(Error): |
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"""Raised by Key.__str__ when the key is invalid. |
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""" |
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class InternalError(Error): |
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"""An internal datastore error. Please report this to Google. |
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""" |
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class NeedIndexError(Error): |
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"""No matching index was found for a query that requires an index. Check |
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the Indexes page in the Admin Console and your index.yaml file. |
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""" |
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class Timeout(Error): |
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"""The datastore operation timed out. This can happen when you attempt to |
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put, get, or delete too many entities or an entity with too many properties, |
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or if the datastore is overloaded or having trouble. |
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""" |