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jbossts 4.2.3 » com » arjuna » common » internal » util » logging » jakarta » JakartaLogFactory.java
/*
 * JBoss, Home of Professional Open Source
 * Copyright 2006, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags.
 * See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU Lesser General Public License, v. 2.1.
 * This program is distributed in the hope that it will be useful, but WITHOUT A
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License,
 * v.2.1 along with this distribution; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 *
 * (C) 2005-2006,
 * @author JBoss Inc.
 */
/*
 * JakartaLogFactory.java
 *
 * Copyright (c) 2003 Arjuna Technologies Ltd.
 * Arjuna Technologies Ltd. Confidential
 *
 * Created on Jun 30, 2003, 10:39:34 AM by Thomas Rischbeck
 */
package com.arjuna.common.internal.util.logging.jakarta;

import com.arjuna.common.internal.util.logging.LogFactoryInterface;
import com.arjuna.common.internal.util.logging.AbstractLogInterface;
import com.arjuna.common.util.exceptions.LogConfigurationException;

/**
 * JavaDoc
 *
 * @author Thomas Rischbeck <thomas.rischbeck@arjuna.com>
 * @version $Revision: 2342 $ $Date: 2006-03-30 14:06:17 +0100 (Thu, 30 Mar 2006) $
 * @since clf-2.0
 */
public class JakartaLogFactory implements LogFactoryInterface
{
   /**
    * Convenience method to return a named logger, without the application
    * having to care about factories.
    *
    * @param clazz Class for which a log name will be derived
    *
    * @exception LogConfigurationException if a suitable <code>Log</code>
    *  instance cannot be returned
    */
   public AbstractLogInterface getLog(Class clazz) throws LogConfigurationException
   {
      try
      {
         // configure the underlying apache factory
         setupLogger();
         // get a new logger from the log subsystem's factory and wrap it into a LogInterface
         return new JakartaLogger(org.apache.commons.logging.LogFactory.getLog(clazz));
      }
      catch (org.apache.commons.logging.LogConfigurationException lce)
      {
         throw new LogConfigurationException(lce.getMessage());
      }
   }

   /**
    * Convenience method to return a named logger, without the application
    * having to care about factories.
    *
    * @param name Logical name of the <code>Log</code> instance to be
    *  returned (the meaning of this name is only known to the underlying
    *  logging implementation that is being wrapped)
    *
    * @exception LogConfigurationException if a suitable <code>Log</code>
    *  instance cannot be returned
    */
   public AbstractLogInterface getLog(String name) throws LogConfigurationException
   {
      try
      {
         // configure the underlying apache factory
         setupLogger();
         // get a new logger from the log subsystem's factory and wrap it into a LogInterface
         return new JakartaLogger(org.apache.commons.logging.LogFactory.getLog(name));
      }
      catch (org.apache.commons.logging.LogConfigurationException lce)
      {
         throw new LogConfigurationException(lce.getMessage());
      }
   }

   /**
    * Install our custom logger by setting the factory attribute
    */
   private void setupLogger()
   {
     org.apache.commons.logging.LogFactory.getFactory().setAttribute("org.apache.commons.logging.Log", Log4JLogger.class.getName());
   }
}
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