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Diffstat (limited to 'guava/src/com/google/common/collect/ListMultimap.java')
-rw-r--r-- | guava/src/com/google/common/collect/ListMultimap.java | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/guava/src/com/google/common/collect/ListMultimap.java b/guava/src/com/google/common/collect/ListMultimap.java new file mode 100644 index 0000000..a83b81a --- /dev/null +++ b/guava/src/com/google/common/collect/ListMultimap.java @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2007 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.Collection; +import java.util.List; +import java.util.Map; + +import javax.annotation.Nullable; + +/** + * A {@code Multimap} that can hold duplicate key-value pairs and that maintains + * the insertion ordering of values for a given key. See the {@link Multimap} + * documentation for information common to all multimaps. + * + * <p>The {@link #get}, {@link #removeAll}, and {@link #replaceValues} methods + * each return a {@link List} of values. Though the method signature doesn't say + * so explicitly, the map returned by {@link #asMap} has {@code List} values. + * + * <p>See the Guava User Guide article on <a href= + * "http://code.google.com/p/guava-libraries/wiki/NewCollectionTypesExplained#Multimap"> + * {@code Multimap}</a>. + * + * @author Jared Levy + * @since 2.0 (imported from Google Collections Library) + */ +@GwtCompatible +public interface ListMultimap<K, V> extends Multimap<K, V> { + /** + * {@inheritDoc} + * + * <p>Because the values for a given key may have duplicates and follow the + * insertion ordering, this method returns a {@link List}, instead of the + * {@link java.util.Collection} specified in the {@link Multimap} interface. + */ + @Override + List<V> get(@Nullable K key); + + /** + * {@inheritDoc} + * + * <p>Because the values for a given key may have duplicates and follow the + * insertion ordering, this method returns a {@link List}, instead of the + * {@link java.util.Collection} specified in the {@link Multimap} interface. + */ + @Override + List<V> removeAll(@Nullable Object key); + + /** + * {@inheritDoc} + * + * <p>Because the values for a given key may have duplicates and follow the + * insertion ordering, this method returns a {@link List}, instead of the + * {@link java.util.Collection} specified in the {@link Multimap} interface. + */ + @Override + List<V> replaceValues(K key, Iterable<? extends V> values); + + /** + * {@inheritDoc} + * + * <p>Though the method signature doesn't say so explicitly, the returned map + * has {@link List} values. + */ + @Override + Map<K, Collection<V>> asMap(); + + /** + * Compares the specified object to this multimap for equality. + * + * <p>Two {@code ListMultimap} instances are equal if, for each key, they + * contain the same values in the same order. If the value orderings disagree, + * the multimaps will not be considered equal. + * + * <p>An empty {@code ListMultimap} is equal to any other empty {@code + * Multimap}, including an empty {@code SetMultimap}. + */ + @Override + boolean equals(@Nullable Object obj); +} |