/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jena.sdb.core;
import java.util.HashMap;
import java.util.Map;
public class Map2<S,T>
{
Map<S, T> mapForward = new HashMap<S, T>() ;
Map<T, S> mapBackward = new HashMap<T, S>() ;
// Two way map
public Map2() {}
public void putMapping(S s, T t)
{
mapForward.put(s, t) ;
mapBackward.put(t, s) ;
}
// Protected - need to give better names for instantiated form.
protected T getByLeft(S s) { return mapForward.get(s) ; }
protected S getByRight(T t) { return mapBackward.get(t) ; }
protected boolean containsLeft(S s) { return mapForward.containsKey(s) ; }
protected boolean containsRight(T t) { return mapBackward.containsKey(t) ; }
}