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Java example source code file (ForwardingSortedSetMultimap.java)

This example Java source code file (ForwardingSortedSetMultimap.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

annotation, comparator, forwardingsetmultimap, forwardingsortedsetmultimap, gwtcompatible, iterable, object, override, sortedset, sortedsetmultimap, util

The ForwardingSortedSetMultimap.java Java example source code

/*
 * 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.Comparator;
import java.util.SortedSet;

import javax.annotation.Nullable;

/**
 * A sorted set multimap which forwards all its method calls to another sorted
 * 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>.
 *
 * @author Kurt Alfred Kluever
 * @since 3.0
 */
@GwtCompatible
public abstract class ForwardingSortedSetMultimap<K, V> extends ForwardingSetMultimap
    implements SortedSetMultimap<K, V> {

  /** Constructor for use by subclasses. */
  protected ForwardingSortedSetMultimap() {}

  @Override
  protected abstract SortedSetMultimap<K, V> delegate();

  @Override
  public SortedSet<V> get(@Nullable K key) {
    return delegate().get(key);
  }

  @Override
  public SortedSet<V> removeAll(@Nullable Object key) {
    return delegate().removeAll(key);
  }

  @Override
  public SortedSet<V> replaceValues(K key, Iterable values) {
    return delegate().replaceValues(key, values);
  }

  @Override
  public Comparator<? super V> valueComparator() {
    return delegate().valueComparator();
  }
}

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