alfresco-community-repo/source/java/org/alfresco/repo/virtual/ref/Protocols.java

/* 
 * Copyright (C) 2005-2015 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see http://www.gnu.org/licenses/.
 */

package org.alfresco.repo.virtual.ref;

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

/**
 * Common {@link Reference} protocols.
 */
public enum Protocols
{
    NODE(new NodeProtocol()), VIRTUAL(new VirtualProtocol()), VANILLA(new VanillaProtocol());

    private static volatile Map<String, Protocol> protocolsMap;

    public static synchronized Protocol fromName(String name)
    {
        return protocolsMap.get(name);
    }

    private synchronized static void register(Protocol protocol)
    {
        if (protocolsMap == null)
        {
            protocolsMap = new HashMap<>();
        }
        protocolsMap.put(protocol.name,
                         protocol);
    }

    public final Protocol protocol;

    Protocols(Protocol protocol)
    {
        this.protocol = protocol;
        register(protocol);
    }
}