/*******************************************************************************
* Copyright (c) 2007, 2010 Intel Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Intel Corporation - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.core.settings.model.util;
import java.util.HashMap;
import java.util.Map;
public class ThreadLocalMap {
private ThreadLocal<Map<Object, Object>> fLocal = new ThreadLocal<Map<Object, Object>>();
public Object get(Object key){
Map<Object, Object> map = getMap(false);
return map != null ? map.get(key) : null;
}
public void set(Object key, Object value){
if(value == null)
clear(key);
else {
Map<Object, Object> map = getMap(true);
map.put(key, value);
}
}
public void clear(Object key){
Map<Object, Object> map = getMap(false);
if(map != null){
map.remove(key);
}
// if(map == null)
// fLocal.set(null);
}
private Map<Object, Object> getMap(boolean create){
Map<Object, Object> map = fLocal.get();
if(map == null && create){
map = new HashMap<Object, Object>();
fLocal.set(map);
}
return map;
}
}