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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* 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:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.framework.jdk.core.type;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
/**
* A hash map implementation that uses composite keys. This class is not thread safe.
*
* @author Ken J. Aguilar
*/
public class CompositeKeyTripleHashMap<KeyOne, KeyTwo, KeyThree, Value> implements Map<Triplet<KeyOne, KeyTwo, KeyThree>, Value> {
private final Map<Triplet<KeyOne, KeyTwo, KeyThree>, Value> map;
private final ThreadLocal<Triplet<KeyOne, KeyTwo, KeyThree>> threadLocalKey =
new ThreadLocal<Triplet<KeyOne, KeyTwo, KeyThree>>() {
@Override
protected Triplet<KeyOne, KeyTwo, KeyThree> initialValue() {
return new Triplet<KeyOne, KeyTwo, KeyThree>(null, null, null);
}
};
public CompositeKeyTripleHashMap() {
map = new HashMap<Triplet<KeyOne, KeyTwo, KeyThree>, Value>();
}
public CompositeKeyTripleHashMap(Map<Triplet<KeyOne, KeyTwo, KeyThree>, Value> map) {
this.map = map;
}
public CompositeKeyTripleHashMap(int initialCapacity) {
map = new HashMap<Triplet<KeyOne, KeyTwo, KeyThree>, Value>(initialCapacity);
}
@Override
public void clear() {
map.clear();
}
@Override
public boolean containsKey(Object key) {
return map.containsKey(key);
}
public boolean containsKey(KeyOne a, KeyTwo b, KeyThree c) {
return map.containsKey(threadLocalKey.get().set(a, b, c));
}
@Override
public boolean containsValue(Object value) {
return map.containsValue(value);
}
@Override
public Set<Map.Entry<Triplet<KeyOne, KeyTwo, KeyThree>, Value>> entrySet() {
return map.entrySet();
}
@Override
public Value get(Object key) {
if (Triplet.class.isInstance(key)) {
return map.get(key);
} else {
throw new IllegalArgumentException(String.format("Expected Type [CompositeKey], got type [%s].",
key.getClass().getName()));
}
}
public Value get(KeyOne a, KeyTwo b, KeyThree c) {
return map.get(threadLocalKey.get().set(a, b, c));
}
@Override
public boolean isEmpty() {
return map.isEmpty();
}
@Override
public Set<Triplet<KeyOne, KeyTwo, KeyThree>> keySet() {
return map.keySet();
}
@Override
public Value put(Triplet<KeyOne, KeyTwo, KeyThree> key, Value value) {
return map.put(key, value);
}
public Value put(KeyOne a, KeyTwo b, KeyThree c, Value value) {
return map.put(new Triplet<KeyOne, KeyTwo, KeyThree>(a, b, c), value);
}
@Override
public void putAll(Map<? extends Triplet<KeyOne, KeyTwo, KeyThree>, ? extends Value> m) {
map.putAll(m);
}
@Override
public Value remove(Object key) {
return map.remove(key);
}
public Value remove(KeyOne a, KeyTwo b, KeyThree c) {
return map.remove(threadLocalKey.get().set(a, b, c));
}
@Override
public int size() {
return map.size();
}
@Override
public Collection<Value> values() {
return map.values();
}
}
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