Java Map Join joinAll(Map> map, String separator)

Description

join All

License

Apache License

Declaration

public static Map<String, List<String>> joinAll(Map<String, Map<String, String>> map, String separator) 

Method Source Code

//package com.java2s;
/*//from  w  w  w.  j a  v  a  2  s .com
 * 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.
 */

import java.util.ArrayList;

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

public class Main {
    public static Map<String, List<String>> joinAll(Map<String, Map<String, String>> map, String separator) {
        if (map == null) {
            return null;
        }
        Map<String, List<String>> result = new HashMap<String, List<String>>();
        for (Map.Entry<String, Map<String, String>> entry : map.entrySet()) {
            result.put(entry.getKey(), join(entry.getValue(), separator));
        }
        return result;
    }

    public static List<String> join(Map<String, String> map, String separator) {
        if (map == null) {
            return null;
        }
        List<String> list = new ArrayList<String>();
        if (map == null || map.size() == 0) {
            return list;
        }
        for (Map.Entry<String, String> entry : map.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();
            if (value == null || value.length() == 0) {
                list.add(key);
            } else {
                list.add(key + separator + value);
            }
        }
        return list;
    }
}

Related

1. join(final Map add, final Map... imports)
2. join(List> list)
3. Join(Map map, String entryGlue, String elementGlue)
4. join(Map dst, Map src)
5. join(Map map, String separator)
6. joinArgs(Map map, String sep, String split)
7. joinLookup(Iterable elements, String separator, Map lookup)
8. joinMap(Map map)
9. joinMapToString(Map map, String sSeparator, String sMidSeparator)