001    /**
002     * Copyright (c) 2000-2010 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.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.kernel.util.PortalClassLoaderUtil;
020    import com.liferay.portal.util.PropsValues;
021    
022    /**
023     * @author Brian Wing Shun Chan
024     */
025    public class ScreenNameValidatorFactory {
026    
027            public static ScreenNameValidator getInstance() {
028                    if (_screenNameValidator == null) {
029                            if (_log.isDebugEnabled()) {
030                                    _log.debug(
031                                            "Instantiate " + PropsValues.USERS_SCREEN_NAME_VALIDATOR);
032                            }
033    
034                            ClassLoader classLoader = PortalClassLoaderUtil.getClassLoader();
035    
036                            try {
037                                    _screenNameValidator =
038                                            (ScreenNameValidator)classLoader.loadClass(
039                                                    PropsValues.USERS_SCREEN_NAME_VALIDATOR).newInstance();
040                            }
041                            catch (Exception e) {
042                                    _log.error(e, e);
043                            }
044                    }
045    
046                    if (_log.isDebugEnabled()) {
047                            _log.debug("Return " + _screenNameValidator.getClass().getName());
048                    }
049    
050                    return _screenNameValidator;
051            }
052    
053            public static void setInstance(ScreenNameValidator screenNameValidator) {
054                    if (_log.isDebugEnabled()) {
055                            _log.debug("Set " + screenNameValidator.getClass().getName());
056                    }
057    
058                    _screenNameValidator = screenNameValidator;
059            }
060    
061            private static Log _log = LogFactoryUtil.getLog(
062                    ScreenNameValidatorFactory.class);
063    
064            private static ScreenNameValidator _screenNameValidator;
065    
066    }