Remove IRollBack -- it was premature.

src/transaction/interfaces.py

@@ -269,19 +269,3 @@ class ITransaction(zope.interface.Interface):
         synchronizer object via a TransactionManager's registerSynch() method
         instead.
         """
-
-class IRollback(zope.interface.Interface):
-
-    def rollback():
-        """Rollback changes since savepoint.
-
-        IOW, rollback to the last savepoint.
-
-        It is an error to rollback to a savepoint if:
-
-        - An earlier savepoint within the same transaction has been
-          rolled back to, or
-
-        - The transaction has ended.
-        """
-

src/transaction/tests/abstestIDataManager.py

@@ -31,7 +31,6 @@ $Id$
 """
 
 from unittest import TestCase
-from transaction.interfaces import IRollback
 
 class IDataManagerTests(TestCase, object):
 
@@ -56,8 +55,3 @@ class IDataManagerTests(TestCase, object):
         tran = self.get_transaction()
         self.datamgr.prepare(tran)
         self.datamgr.abort(tran)
-
-    def testRollback(self):
-        tran = self.get_transaction()
-        rb = self.datamgr.savepoint(tran)
-        self.assert_(IRollback.providedBy(rb))

src/transaction/tests/test_util.py

-##############################################################################
-#
-# Copyright (c) 2004 Zope Corporation and Contributors.
-# All Rights Reserved.
-#
-# This software is subject to the provisions of the Zope Public License,
-# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
-# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
-# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
-# FOR A PARTICULAR PURPOSE.
-#
-##############################################################################
-"""Test transaction utilities
-
-$Id$
-"""
-import unittest
-from zope.testing.doctest import DocTestSuite
-
-def test_suite():
-    return DocTestSuite('transaction.util')
-
-if __name__ == '__main__':
-    unittest.main(defaultTest='test_suite')

src/transaction/util.py

-##############################################################################
-#
-# Copyright (c) 2004 Zope Corporation and Contributors.
-# All Rights Reserved.
-#
-# This software is subject to the provisions of the Zope Public License,
-# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
-# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
-# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
-# FOR A PARTICULAR PURPOSE.
-#
-##############################################################################
-"""Utility classes or functions
-
-$Id$
-"""
-
-from transaction.interfaces import IRollback
-
-try:
-    from zope.interface import implements
-except ImportError:
-    def implements(*args):
-        pass
-
-class NoSavepointSupportRollback:
-    """Rollback for data managers that don't support savepoints
-
-    >>> class DataManager:
-    ...     def savepoint(self, txn):
-    ...         return NoSavepointSupportRollback(self)
-    >>> rb = DataManager().savepoint('some transaction')
-    >>> rb.rollback()
-    Traceback (most recent call last):
-    ...
-    NotImplementedError: """ \
-           """DataManager data managers do not support """ \
-           """savepoints (aka subtransactions
-
-    """
-
-    implements(IRollback)
-
-    def __init__(self, dm):
-        self.dm = dm.__class__.__name__
-
-    def rollback(self):
-        raise NotImplementedError(
-            "%s data managers do not support savepoints (aka subtransactions"
-            % self.dm)