org.sbs.util.MapUtils.java Source code

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Here is the source code for org.sbs.util.MapUtils.java

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/**
 * ########################  SHENBAISE'S WORK  ##########################
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.sbs.util;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;

/**
 * @author whiteme
 * @date 2013728
 * @desc map?
 */
public class MapUtils {

    /**
     * ?m2m1
     * 
     * @param m1
     * @param m2
     * @return
     */
    @SuppressWarnings({ "rawtypes", "unchecked" })
    public static HashMap<String, Object> mager(HashMap<String, Object> m1, HashMap<String, Object> m2) {
        if (null != m1 && null != m2) {
            // ??m2
            Set<String> keyset = m2.keySet();
            for (String key : keyset) {
                Object obj1 = m1.get(key);
                Object obj2 = m2.get(key);
                if (obj2 instanceof Map && obj1 instanceof Map) {
                    ((Map) obj1).putAll((Map) obj2);
                } else if (obj2 instanceof List && obj1 instanceof List) {
                    ((List) obj1).addAll((List) obj2);
                } else if (obj2 instanceof Set && obj1 instanceof Set) {
                    ((Set) obj1).addAll((Set) obj2);
                } else {
                    if (null != obj2) {
                        m1.put(key, obj2);
                    }
                }
            }
        }
        return m1;
    }

    public static void main(String[] args) {
        System.out.println((null instanceof Object));
        HashMap<String, Object> m1 = Maps.newHashMap();
        m1.put("a", "1");
        m1.put("b", "x");
        m1.put("d", Lists.newArrayList(1, 2, 34));
        HashMap<String, Object> m2 = Maps.newHashMap();
        m2.put("a", "x");
        m2.put("b", "y");
        m2.put("c", "3");
        m1.put("d", Lists.newArrayList(1, 2, 34, 5));
        m1.put("e", Maps.newHashMap());
        System.out.println(mager(m1, m2));
        System.out.println(m1);
    }
}