001/* 002 * Copyright (C) 2010 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package com.google.common.collect; 018 019import com.google.common.annotations.GwtCompatible; 020import java.util.Comparator; 021import java.util.SortedSet; 022import javax.annotation.Nullable; 023 024/** 025 * A sorted set multimap which forwards all its method calls to another sorted set multimap. 026 * Subclasses should override one or more methods to modify the behavior of the backing multimap as 027 * desired per the <a href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>. 028 * 029 * <p><b>{@code default} method warning:</b> This class does <i>not</i> forward calls to {@code 030 * default} methods. Instead, it inherits their default implementations. When those implementations 031 * invoke methods, they invoke methods on the {@code ForwardingSortedSetMultimap}. 032 * 033 * @author Kurt Alfred Kluever 034 * @since 3.0 035 */ 036@GwtCompatible 037public abstract class ForwardingSortedSetMultimap<K, V> extends ForwardingSetMultimap<K, V> 038 implements SortedSetMultimap<K, V> { 039 040 /** Constructor for use by subclasses. */ 041 protected ForwardingSortedSetMultimap() {} 042 043 @Override 044 protected abstract SortedSetMultimap<K, V> delegate(); 045 046 @Override 047 public SortedSet<V> get(@Nullable K key) { 048 return delegate().get(key); 049 } 050 051 @Override 052 public SortedSet<V> removeAll(@Nullable Object key) { 053 return delegate().removeAll(key); 054 } 055 056 @Override 057 public SortedSet<V> replaceValues(K key, Iterable<? extends V> values) { 058 return delegate().replaceValues(key, values); 059 } 060 061 @Override 062 public Comparator<? super V> valueComparator() { 063 return delegate().valueComparator(); 064 } 065}