exceptions.py

Python的一个ORM,现在很火

#
# Copyright (c) 2006, 2007 Canonical
#
# Written by Gustavo Niemeyer <[e-mail]>
#
# This file is part of Storm Object Relational Mapper.
#
# Storm is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 2.1 of
# the License, or (at your option) any later version.
#
# Storm is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#


class StormError(Exception):
    pass


class CompileError(StormError):
    pass

class NoTableError(CompileError):
    pass

class ExprError(StormError):
    pass

class NoneError(StormError):
    pass

class PropertyPathError(StormError):
    pass

class ClassInfoError(StormError):
    pass


class URIError(StormError):
    pass


class ClosedError(StormError):
    pass

class FeatureError(StormError):
    pass
    
class DatabaseModuleError(StormError):
    pass


class StoreError(StormError):
    pass

class NoStoreError(StormError):
    pass

class WrongStoreError(StoreError):
    pass

class NotFlushedError(StoreError):
    pass

class OrderLoopError(StoreError):
    pass

class NotOneError(StoreError):
    pass

class UnorderedError(StoreError):
    pass

class LostObjectError(StoreError):
    pass


class Error(StormError):
    pass

class Warning(StormError):
    pass

class InterfaceError(Error):
    pass

class DatabaseError(Error):
    pass

class InternalError(DatabaseError):
    pass

class OperationalError(DatabaseError):
    pass

class ProgrammingError(DatabaseError):
    pass

class IntegrityError(DatabaseError):
    pass

class DataError(DatabaseError):
    pass

class NotSupportedError(DatabaseError):
    pass


def install_exceptions(module):
    for exception in (Error, Warning, DatabaseError, InternalError, 
                      OperationalError, ProgrammingError, IntegrityError,
                      DataError, NotSupportedError):
        module_exception = getattr(module, exception.__name__, None)
        if module_exception is not None:
            module_exception.__bases__ += (exception,)