/* * Copyright (C) 2010 The Guava Authors * * Licensed 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 com.google.common.collect; import com.google.common.annotations.GwtCompatible; import java.util.List; import javax.annotation.Nullable; /** * A list multimap which forwards all its method calls to another list multimap. * Subclasses should override one or more methods to modify the behavior of * the backing multimap as desired per the decorator pattern. * * @author Kurt Alfred Kluever * @since 3.0 */ @GwtCompatible public abstract class ForwardingListMultimap extends ForwardingMultimap implements ListMultimap { /** Constructor for use by subclasses. */ protected ForwardingListMultimap() {} @Override protected abstract ListMultimap delegate(); @Override public List get(@Nullable K key) { return delegate().get(key); } @Override public List removeAll(@Nullable Object key) { return delegate().removeAll(key); } @Override public List replaceValues(K key, Iterable values) { return delegate().replaceValues(key, values); } }