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Diffstat (limited to 'guava/src/com/google/common/collect/ForwardingListMultimap.java')
-rw-r--r-- | guava/src/com/google/common/collect/ForwardingListMultimap.java | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/guava/src/com/google/common/collect/ForwardingListMultimap.java b/guava/src/com/google/common/collect/ForwardingListMultimap.java new file mode 100644 index 0000000..3b1d55e --- /dev/null +++ b/guava/src/com/google/common/collect/ForwardingListMultimap.java @@ -0,0 +1,54 @@ +/* + * 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 <a + * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>. + * + * @author Kurt Alfred Kluever + * @since 3.0 + */ +@GwtCompatible +public abstract class ForwardingListMultimap<K, V> + extends ForwardingMultimap<K, V> implements ListMultimap<K, V> { + + /** Constructor for use by subclasses. */ + protected ForwardingListMultimap() {} + + @Override protected abstract ListMultimap<K, V> delegate(); + + @Override public List<V> get(@Nullable K key) { + return delegate().get(key); + } + + @Override public List<V> removeAll(@Nullable Object key) { + return delegate().removeAll(key); + } + + @Override public List<V> replaceValues(K key, Iterable<? extends V> values) { + return delegate().replaceValues(key, values); + } +} |