/*
* Copyright (C) The Apache Software Foundation. All rights reserved.
*
* This software is published under the terms of the Apache Software License
* version 1.1, a copy of which has been included with this distribution in
* the LICENSE.txt file.
*/
package org.apache.log4j.helpers;
import java.util.Hashtable;
/**
<code>ThreadLocalMap</code> extends {@link InheritableThreadLocal}
to bequeath a copy of the hashtable of the MDC of the parent
thread.
@author Ceki Gülcü
@since 1.2
*/
final public class ThreadLocalMap extends InheritableThreadLocal {
public
final
Object childValue(Object parentValue) {
Hashtable ht = (Hashtable) parentValue;
if(ht != null) {
return ht.clone();
} else {
return null;
}
}
}
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