/tests/com/google/appengine/datanucleus/CollisionDatastoreDelegate.java

http://datanucleus-appengine.googlecode.com/ · Java · 42 lines · 16 code · 7 blank · 19 comment · 0 complexity · 4fa1a9804ac9e3067dbbd2b7518b0d58 MD5 · raw file

  1. /*
  2. * /**********************************************************************
  3. * Copyright (c) 2009 Google Inc.
  4. *
  5. * Licensed under the Apache License, Version 2.0 (the "License");
  6. * you may not use this file except in compliance with the License.
  7. * You may obtain a copy of the License at
  8. *
  9. * http://www.apache.org/licenses/LICENSE-2.0
  10. *
  11. * Unless required by applicable law or agreed to in writing, software
  12. * distributed under the License is distributed on an "AS IS" BASIS,
  13. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14. * See the License for the specific language governing permissions and
  15. * limitations under the License.
  16. * **********************************************************************/
  17. package com.google.appengine.datanucleus;
  18. import com.google.apphosting.api.ApiProxy;
  19. import java.util.ConcurrentModificationException;
  20. /**
  21. * @author Max Ross <maxr@google.com>
  22. */
  23. public class CollisionDatastoreDelegate extends ExceptionThrowingDatastoreDelegate {
  24. public CollisionDatastoreDelegate(ApiProxy.Delegate inner, ExceptionPolicy policy) {
  25. super(inner, policy);
  26. }
  27. public CollisionDatastoreDelegate(ApiProxy.Delegate inner) {
  28. this(inner, ALWAYS_COLLIDE);
  29. }
  30. public static final ExceptionPolicy ALWAYS_COLLIDE = new BaseExceptionPolicy() {
  31. protected void doIntercept(String methodName) {
  32. throw new ConcurrentModificationException();
  33. }
  34. };
  35. }