com.alibaba.dubbo.rpc.cluster.merger.MapMerger Maven / Gradle / Ivy

Go to download
/*
 * Copyright 1999-2011 Alibaba Group.
 *  
 * 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.alibaba.dubbo.rpc.cluster.merger;

import java.util.HashMap;
import java.util.Map;

import com.alibaba.dubbo.rpc.cluster.Merger;

/**
 * @author kimi
 */
public class MapMerger implements Merger> {

    public Map merge(Map... items) {
        if (items.length == 0) {
            return null;
        }
        Map result = new HashMap();
        for (Map item : items) {
            if (item != null) {
                result.putAll(item);
            }
        }
        return result;
    }

}