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;
020
021import java.util.Comparator;
022import java.util.SortedSet;
023
024import javax.annotation.Nullable;
025
026/**
027 * A sorted set multimap which forwards all its method calls to another sorted
028 * set multimap. Subclasses should override one or more methods to modify the
029 * behavior of the backing multimap as desired per the <a
030 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
031 *
032 * @author Kurt Alfred Kluever
033 * @since 3.0
034 */
035@GwtCompatible
036public abstract class ForwardingSortedSetMultimap<K, V> extends ForwardingSetMultimap<K, V>
037    implements SortedSetMultimap<K, V> {
038
039  /** Constructor for use by subclasses. */
040  protected ForwardingSortedSetMultimap() {}
041
042  @Override
043  protected abstract SortedSetMultimap<K, V> delegate();
044
045  @Override
046  public SortedSet<V> get(@Nullable K key) {
047    return delegate().get(key);
048  }
049
050  @Override
051  public SortedSet<V> removeAll(@Nullable Object key) {
052    return delegate().removeAll(key);
053  }
054
055  @Override
056  public SortedSet<V> replaceValues(K key, Iterable<? extends V> values) {
057    return delegate().replaceValues(key, values);
058  }
059
060  @Override
061  public Comparator<? super V> valueComparator() {
062    return delegate().valueComparator();
063  }
064}