| /* |
| * 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 com.google.errorprone.annotations.CanIgnoreReturnValue; |
| import java.util.Map.Entry; |
| import java.util.Set; |
| import org.checkerframework.checker.nullness.qual.Nullable; |
| |
| /** |
| * A set multimap which forwards all its method calls to another set multimap. Subclasses should |
| * override one or more methods to modify the behavior of the backing multimap as desired per the <a |
| * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>. |
| * |
| * <p><b>{@code default} method warning:</b> This class does <i>not</i> forward calls to {@code |
| * default} methods. Instead, it inherits their default implementations. When those implementations |
| * invoke methods, they invoke methods on the {@code ForwardingSetMultimap}. |
| * |
| * @author Kurt Alfred Kluever |
| * @since 3.0 |
| */ |
| @GwtCompatible |
| public abstract class ForwardingSetMultimap<K, V> extends ForwardingMultimap<K, V> |
| implements SetMultimap<K, V> { |
| |
| @Override |
| protected abstract SetMultimap<K, V> delegate(); |
| |
| @Override |
| public Set<Entry<K, V>> entries() { |
| return delegate().entries(); |
| } |
| |
| @Override |
| public Set<V> get(@Nullable K key) { |
| return delegate().get(key); |
| } |
| |
| @CanIgnoreReturnValue |
| @Override |
| public Set<V> removeAll(@Nullable Object key) { |
| return delegate().removeAll(key); |
| } |
| |
| @CanIgnoreReturnValue |
| @Override |
| public Set<V> replaceValues(K key, Iterable<? extends V> values) { |
| return delegate().replaceValues(key, values); |
| } |
| } |