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.jericho;
016    
017    import com.liferay.portal.kernel.util.ReflectionUtil;
018    
019    import java.lang.reflect.Method;
020    
021    import java.util.Map;
022    import java.util.concurrent.ConcurrentHashMap;
023    
024    import net.htmlparser.jericho.Config;
025    import net.htmlparser.jericho.Logger;
026    import net.htmlparser.jericho.LoggerProvider;
027    
028    /**
029     * @author Shuyang Zhou
030     */
031    public class CachedLoggerProvider implements LoggerProvider {
032    
033            public static void install() throws Exception {
034                    Class<?> clazz = Class.forName(
035                            "net.htmlparser.jericho.LoggerFactory");
036    
037                    Method method = ReflectionUtil.getDeclaredMethod(
038                            clazz, "getDefaultLoggerProvider");
039    
040                    LoggerProvider loggerProvider = (LoggerProvider)method.invoke(null);
041    
042                    CachedLoggerProvider cachedLoggerProvider = new CachedLoggerProvider(
043                            loggerProvider);
044    
045                    Config.LoggerProvider = cachedLoggerProvider;
046            }
047    
048            public CachedLoggerProvider(LoggerProvider loggerProvider) {
049                    _loggerProvider = loggerProvider;
050            }
051    
052            public Logger getLogger(String name) {
053                    Logger logger = _loggers.get(name);
054    
055                    if (logger == null) {
056                            logger = _loggerProvider.getLogger(name);
057    
058                            _loggers.put(name, logger);
059                    }
060    
061                    return logger;
062            }
063    
064            private LoggerProvider _loggerProvider;
065            private Map<String, Logger> _loggers =
066                    new ConcurrentHashMap<String, Logger>();
067    
068    }