/hazelcast/src/main/java/com/hazelcast/merge/AddNewEntryMergePolicy.java

https://bitbucket.org/gabral6_gmailcom/hazelcast · Java · 30 lines · 11 code · 4 blank · 15 comment · 2 complexity · 09f5719708136a6f48a66e0ee668bd49 MD5 · raw file

  1. /*
  2. * Copyright (c) 2008-2013, Hazelcast, Inc. All Rights Reserved.
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. package com.hazelcast.merge;
  17. import com.hazelcast.core.MapEntry;
  18. import com.hazelcast.impl.base.DataRecordEntry;
  19. public class AddNewEntryMergePolicy implements MergePolicy {
  20. public static final String NAME = "hz.ADD_NEW_ENTRY";
  21. public Object merge(String mapName, MapEntry mergingEntry, MapEntry existingEntry) {
  22. DataRecordEntry mergingDataEntry = (DataRecordEntry) mergingEntry;
  23. DataRecordEntry existingDataEntry = (DataRecordEntry) existingEntry;
  24. return (existingEntry == null || !existingDataEntry.hasValue()) ? mergingDataEntry.getValueData() : null;
  25. }
  26. }