poi/src/java/org/apache/poi/util/POILogFactory.java

123 lines
4.1 KiB
Java

/*
* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache POI" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* "Apache POI", nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.poi.util;
import java.util.HashMap;
import java.util.Map;
/**
* Provides logging without clients having to mess with
* configuration/initialization.
*
* @author Andrew C. Oliver (acoliver at apache dot org)
* @author Marc Johnson (mjohnson at apache dot org)
* @author Nicola Ken Barozzi (nicolaken at apache.org)
*/
public class POILogFactory
{
// private static LogFactory _creator = LogFactory.getFactory();
// map of POILogger instances, with classes as keys
private static Map _loggers = new HashMap();;
/**
* construct a POILogFactory.
*/
private POILogFactory()
{
}
/**
* Get a logger, based on a class name
*
* @param theclass the class whose name defines the log
*
* @return a POILogger for the specified class
*/
public static POILogger getLogger( final Class theclass )
{
return getLogger( theclass.getName() );
}
/**
* Get a logger, based on a String
*
* @param cat the String that defines the log
*
* @return a POILogger for the specified class
*/
public static POILogger getLogger( final String cat )
{
POILogger logger = null;
if ( _loggers.containsKey( cat ) )
{
logger = (POILogger) _loggers.get( cat );
}
else
{
logger = new POILogger( );
_loggers.put( cat, logger );
}
return logger;
}
} // end public class POILogFactory