/hazelcast/src/main/java/com/hazelcast/merge/MergePolicy.java
https://bitbucket.org/gabral6_gmailcom/hazelcast · Java · 36 lines · 6 code · 5 blank · 25 comment · 0 complexity · 69971d91f58d3acd97d4ec5e8207c090 MD5 · raw file
- /*
- * Copyright (c) 2008-2013, Hazelcast, Inc. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package com.hazelcast.merge;
- import com.hazelcast.core.MapEntry;
- public interface MergePolicy {
- public static final Object REMOVE_EXISTING = new Object();
- /**
- * Returns the value of the entry after the merge
- * of entries with the same key. Returning value can be
- * You should consider the case where existingEntry is null.
- *
- * @param mapName name of the map
- * @param mergingEntry entry merging into the destination cluster
- * @param existingEntry existing entry in the destination cluster
- * @return final value of the entry. If returns null then no change on the entry.
- */
- Object merge(String mapName, MapEntry mergingEntry, MapEntry existingEntry);
- }