Java ConcurrentMap getFilesystem(String id)

Description

get Filesystem

License

Apache License

Declaration

public static Map<String, String> getFilesystem(String id) 

Method Source Code

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

import java.util.Map;

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

public class Main {
    private static final ConcurrentMap<String, Map<String, String>> mounts = new ConcurrentHashMap<String, Map<String, String>>();

    public static Map<String, String> getFilesystem(String id) {
        Map<String, String> fs = mounts.get(id);
        if (fs == null) {
            fs = new ConcurrentHashMap<String, String>();
            Map<String, String> prev = mounts.putIfAbsent(id, fs);
            if (prev != null) {
                fs = prev;
            }
        }
        return fs;
    }
}

Related

1. fileReaderIncrement(ConcurrentMap readers, Long fileNum)
2. get(Class clazz)
3. getCache(String cacheName)
4. getConcurrentMap(int... size)
5. getContextPath()
6. getNestedSet(K1 key, ConcurrentMap> set)
7. getNewLogFactor(String factorName)
8. getSingleInstance(Class classType)
9. getTypeFromKind(String kind)