1090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson/* 2090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * Copyright (C) 2008 Google Inc. 3090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * 4090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * Licensed under the Apache License, Version 2.0 (the "License"); 5090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * you may not use this file except in compliance with the License. 6090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * You may obtain a copy of the License at 7090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * 8090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * http://www.apache.org/licenses/LICENSE-2.0 9090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * 10090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * Unless required by applicable law or agreed to in writing, software 11090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * distributed under the License is distributed on an "AS IS" BASIS, 12090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * See the License for the specific language governing permissions and 14090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * limitations under the License. 15090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson */ 16090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 17090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilsonpackage com.google.common.collect; 18090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 19090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilsonimport com.google.common.annotations.GwtCompatible; 20090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 21090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson/** 22090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * Bimap with one or more mappings. 23090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * 24090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * @author Jared Levy 25090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson */ 26090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson@GwtCompatible(serializable = true) 27090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson@SuppressWarnings("serial") // uses writeReplace(), not default serialization 28090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilsonclass RegularImmutableBiMap<K, V> extends ImmutableBiMap<K, V> { 29090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson final transient ImmutableMap<K, V> delegate; 30090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson final transient ImmutableBiMap<V, K> inverse; 31090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 32090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson RegularImmutableBiMap(ImmutableMap<K, V> delegate) { 33090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson this.delegate = delegate; 34090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 35090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson ImmutableMap.Builder<V, K> builder = ImmutableMap.builder(); 36090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson for (Entry<K, V> entry : delegate.entrySet()) { 37090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson builder.put(entry.getValue(), entry.getKey()); 38090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson } 39090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson ImmutableMap<V, K> backwardMap = builder.build(); 40090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson this.inverse = new RegularImmutableBiMap<V, K>(backwardMap, this); 41090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson } 42090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 43090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson RegularImmutableBiMap(ImmutableMap<K, V> delegate, 44090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson ImmutableBiMap<V, K> inverse) { 45090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson this.delegate = delegate; 46090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson this.inverse = inverse; 47090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson } 48090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 49090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson @Override ImmutableMap<K, V> delegate() { 50090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson return delegate; 51090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson } 52090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 53090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson @Override public ImmutableBiMap<V, K> inverse() { 54090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson return inverse; 55090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson } 56090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson} 57