/*
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* JBoss, Home of Professional Open Source
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* Copyright 2005, JBoss Inc., and individual contributors as indicated
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* by the @authors tag. See the copyright.txt in the distribution for a
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* full listing of individual contributors.
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this software; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
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*/
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package org.jbpm.internal.log;
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/**
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* @author Tom Baeyens
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*/
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public abstract class Log {
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static LogFactory logFactory;
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public static synchronized Log getLog(String name) {
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if (logFactory==null) {
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ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
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// if logging.properties is available on the classpath
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if (classLoader.getResource("logging.properties")!=null) {
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logFactory = new Jdk14LogFactory();
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// if log4j is available on the classpath
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} else if (isLog4jAvailable(classLoader)) {
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logFactory = new Log4jLogFactory();
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} else {
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logFactory = new Jdk14LogFactory();
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}
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}
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return logFactory.getLog(name);
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}
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static boolean isLog4jAvailable(ClassLoader classLoader) {
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try {
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Class.forName("org.apache.log4j.LogManager", false, classLoader);
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return true;
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} catch (ClassNotFoundException e) {
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return false;
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}
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}
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public abstract void error(String msg);
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public abstract void error(String msg, Throwable exception);
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public abstract boolean isInfoEnabled();
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public abstract void info(String msg);
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public abstract void info(String msg, Throwable exception);
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public abstract boolean isDebugEnabled();
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public abstract void debug(String msg);
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public abstract void debug(String msg, Throwable exception);
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public abstract boolean isTraceEnabled();
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public abstract void trace(String msg);
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public abstract void trace(String msg, Throwable exception);
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public abstract boolean isWarnEnabled();
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public abstract void warn(String msg);
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public abstract void warn(String msg, Throwable exception);
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}
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