001    /**
002     * Copyright (c) 2000-2013 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.ClassUtil;
020    import com.liferay.portal.kernel.util.InstanceFactory;
021    import com.liferay.portal.util.ClassLoaderUtil;
022    import com.liferay.portal.util.PropsValues;
023    
024    /**
025     * @author Brian Wing Shun Chan
026     * @author Shuyang Zhou
027     */
028    public class ScreenNameValidatorFactory {
029    
030            public static ScreenNameValidator getInstance() {
031                    return _screenNameValidator;
032            }
033    
034            public static void setInstance(ScreenNameValidator screenNameValidator) {
035                    if (_log.isDebugEnabled()) {
036                            _log.debug("Set " + ClassUtil.getClassName(screenNameValidator));
037                    }
038    
039                    if (screenNameValidator == null) {
040                            _screenNameValidator = _originalScreenNameValidator;
041                    }
042                    else {
043                            _screenNameValidator = screenNameValidator;
044                    }
045            }
046    
047            public void afterPropertiesSet() throws Exception {
048                    if (_log.isDebugEnabled()) {
049                            _log.debug(
050                                    "Instantiate " + PropsValues.USERS_SCREEN_NAME_VALIDATOR);
051                    }
052    
053                    ClassLoader classLoader = ClassLoaderUtil.getPortalClassLoader();
054    
055                    _originalScreenNameValidator =
056                            (ScreenNameValidator)InstanceFactory.newInstance(
057                                    classLoader, PropsValues.USERS_SCREEN_NAME_VALIDATOR);
058    
059                    _screenNameValidator = _originalScreenNameValidator;
060            }
061    
062            private static Log _log = LogFactoryUtil.getLog(
063                    ScreenNameValidatorFactory.class);
064    
065            private static ScreenNameValidator _originalScreenNameValidator;
066            private static volatile ScreenNameValidator _screenNameValidator;
067    
068    }