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http://www.slf4j.org/api/org/slf4j/impl/Log4jLoggerAdapter.html
/*
* Copyright (c) 2004-2005 SLF4J.ORG
* Copyright (c) 2004-2005 QOS.ch
*
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
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* to whom the Software is furnished to do so, provided that the above
* copyright notice(s) and this permission notice appear in all copies of
* the Software and that both the above copyright notice(s) and this
* permission notice appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
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package org.slf4j.impl;
import java.util.HashMap;
import java.util.Map;
import org.apache.log4j.LogManager;
import org.slf4j.ILoggerFactory;
import org.slf4j.Logger;
/**
* Log4jLoggerFactory is an implementation of {@link ILoggerFactory}
* returning the appropriate named {@link Log4jLoggerAdapter} instance.
*
* @author Ceki Gülcü
*/
public class Log4jLoggerFactory implements ILoggerFactory {
// key: name (String), value: a Log4jLoggerAdapter;
Map loggerMap;
public Log4jLoggerFactory() {
loggerMap = new HashMap();
}
/* (non-Javadoc)
* @see org.slf4j.ILoggerFactory#getLogger(java.lang.String)
*/
public Logger getLogger(String name) {
Logger slf4jLogger = (Logger) loggerMap.get(name);
if (slf4jLogger == null) {
org.apache.log4j.Logger logger = LogManager.getLogger(name);
slf4jLogger = new Log4jLoggerAdapter(logger);
loggerMap.put(name, slf4jLogger);
}
return slf4jLogger;
}
}