001    /**
002     * Copyright (c) 2000-2011 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portal.security.auth;
016    
017    import com.liferay.portal.kernel.concurrent.ConcurrentHashSet;
018    
019    import java.util.Set;
020    
021    /**
022     * @author Michael C. Han
023     */
024    public class DefaultAuthenticatedUserUUIDStoreImpl
025            implements AuthenticatedUserUUIDStore {
026    
027            public boolean exists(String userUUID) {
028                    return _userUUIDStore.contains(userUUID);
029            }
030    
031            public boolean register(String userUUID) {
032                    return _userUUIDStore.add(userUUID);
033            }
034    
035            public boolean unregister(String userUUID) {
036                    return _userUUIDStore.remove(userUUID);
037            }
038    
039            private Set<String> _userUUIDStore = new ConcurrentHashSet<String>();
040    
041    }