org.apache.avalon.excalibur.logger.logkit.LogKitLoggerHelper Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed  under the  License is distributed on an "AS IS" BASIS,
 * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY KIND, either  express  or
 * implied.
 * 
 * See the License for the specific language governing permissions and
 * limitations under the License.
*/
package org.apache.avalon.excalibur.logger.logkit;

import org.apache.avalon.framework.logger.Logger;
import org.apache.avalon.framework.logger.LogEnabled;
import org.apache.log.Hierarchy;


/**
 * Tie this object to a LoggerManagerTee, give it the Hierachy
 * that LogKitAdapter operates upon and it will substitute
 * the ErrorHandler for the Hierarchy at the enableLogging() call.
 *
 * @author Avalon Development Team
 * @version CVS $Revision: 1.3 $ $Date: 2004/03/10 13:54:51 $
 * @since 4.0
 */
public class LogKitLoggerHelper implements LogEnabled
{
    /* The hierarchy to operate upon */
    private final Hierarchy m_hierarchy;

    /* Creates an instance of LogKitLoggerHelper. */
    public LogKitLoggerHelper( final Hierarchy hierarchy )
    {
        if ( hierarchy == null ) throw new NullPointerException( "hierarchy" );
        m_hierarchy = hierarchy;
    }

    /* The main work - creation of a custom ErrorHandler is done here. */
    public void enableLogging( final Logger logger )
    {
         if ( logger == null ) throw new NullPointerException( "logger" );
         final ErrorHandlerAdapter errorHandler = new ErrorHandlerAdapter( logger );
         m_hierarchy.setErrorHandler( errorHandler );
    }
}