001    /**
002     * Copyright (c) 2000-present 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.kernel.security.auth;
016    
017    import com.liferay.registry.Registry;
018    import com.liferay.registry.RegistryUtil;
019    import com.liferay.registry.ServiceTracker;
020    
021    /**
022     * @author Michael C. Han
023     * @author Shuyang Zhou
024     */
025    public class FullNameGeneratorFactory {
026    
027            public static FullNameGenerator getInstance() {
028                    FullNameGenerator fullNameGenerator =
029                            _instance._serviceTracker.getService();
030    
031                    if (fullNameGenerator != null) {
032                            return fullNameGenerator;
033                    }
034    
035                    return _fullNameGenerator;
036            }
037    
038            public void setFullNameGenerator(FullNameGenerator fullNameGenerator) {
039                    _fullNameGenerator = fullNameGenerator;
040            }
041    
042            private FullNameGeneratorFactory() {
043                    Registry registry = RegistryUtil.getRegistry();
044    
045                    _serviceTracker = registry.trackServices(FullNameGenerator.class);
046    
047                    _serviceTracker.open();
048            }
049    
050            private static final FullNameGeneratorFactory _instance =
051                    new FullNameGeneratorFactory();
052    
053            private static FullNameGenerator _fullNameGenerator;
054    
055            private final ServiceTracker<FullNameGenerator, FullNameGenerator>
056                    _serviceTracker;
057    
058    }