/***
* Retrotranslator: a Java bytecode transformer that translates Java classes
* compiled with JDK 5.0 into classes that can be run on JVM 1.4.
*
* Copyright (c) 2005 - 2008 Taras Puchko
* 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. Neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS 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 COPYRIGHT OWNER OR 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.
*/
package net.sf.retrotranslator.runtime.java.lang;
import java.util.*;
import net.sf.retrotranslator.registry.Advanced;
/**
* @author Taras Puchko
*/
@Advanced("ThreadLocal.remove")
public class InheritableThreadLocal_ extends ThreadLocal_ {
private class Key {
public InheritableThreadLocal_ get() {
return InheritableThreadLocal_.this;
}
}
private static class Container extends InheritableThreadLocal<Map<Key, Object>> {
protected Map<Key, Object> initialValue() {
return new WeakHashMap<Key, Object>();
}
protected Map<Key, Object> childValue(Map<Key, Object> parentValue) {
WeakHashMap<Key, Object> result = new WeakHashMap<Key, Object>(parentValue.size() * 2);
for (Map.Entry<Key, Object> entry : parentValue.entrySet()) {
Key key = entry.getKey();
result.put(key, key.get().childValue(entry.getValue()));
}
return result;
}
}
private static final Container container = new Container();
private final Key key = new Key();
public InheritableThreadLocal_() {
}
public Object get() {
Map<Key, Object> map = container.get();
Object value = map.get(key);
if (value == null && !map.containsKey(key)) {
map.put(key, value = initialValue());
}
return value;
}
public void set(Object value) {
container.get().put(key, value);
}
public void remove() {
container.get().remove(key);
}
protected Object childValue(Object parentValue) {
return parentValue;
}
}
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