001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.security.auth;
016    
017    import com.liferay.portal.kernel.concurrent.ConcurrentHashSet;
018    import com.liferay.portal.kernel.security.pacl.DoPrivileged;
019    
020    import java.util.Set;
021    
022    /**
023     * @author Michael C. Han
024     */
025    @DoPrivileged
026    public class DefaultAuthenticatedUserUUIDStoreImpl
027            implements AuthenticatedUserUUIDStore {
028    
029            @Override
030            public boolean exists(String userUUID) {
031                    return _userUUIDStore.contains(userUUID);
032            }
033    
034            @Override
035            public boolean register(String userUUID) {
036                    return _userUUIDStore.add(userUUID);
037            }
038    
039            @Override
040            public boolean unregister(String userUUID) {
041                    return _userUUIDStore.remove(userUUID);
042            }
043    
044            private Set<String> _userUUIDStore = new ConcurrentHashSet<String>();
045    
046    }