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Java example source code file (SetMultimap.java)
The SetMultimap.java Java example source code/* * 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 com.google.errorprone.annotations.CanIgnoreReturnValue; import java.util.Collection; import java.util.Map; import java.util.Set; import javax.annotation.Nullable; /** * A {@code Multimap} that cannot hold duplicate key-value pairs. Adding a * key-value pair that's already in the multimap has no effect. 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 Set} of values, while {@link #entries} returns a {@code * Set} of map entries. Though the method signature doesn't say so explicitly, * the map returned by {@link #asMap} has {@code Set} values. * * <p>If the values corresponding to a single key should be ordered according to * a {@link java.util.Comparator} (or the natural order), see the * {@link SortedSetMultimap} subinterface. * * <p>Since the value collections are sets, the behavior of a {@code SetMultimap} * is not specified if key <em>or value objects already present in the * multimap change in a manner that affects {@code equals} comparisons. * Use caution if mutable objects are used as keys or values in a * {@code SetMultimap}. * * <p>See the Guava User Guide article on { /** * {@inheritDoc} * * <p>Because a {@code SetMultimap} has unique values for a given key, this * method returns a {@link Set}, instead of the {@link java.util.Collection} * specified in the {@link Multimap} interface. */ @Override Set<V> get(@Nullable K key); /** * {@inheritDoc} * * <p>Because a {@code SetMultimap} has unique values for a given key, this * method returns a {@link Set}, instead of the {@link java.util.Collection} * specified in the {@link Multimap} interface. */ @CanIgnoreReturnValue @Override Set<V> removeAll(@Nullable Object key); /** * {@inheritDoc} * * <p>Because a {@code SetMultimap} has unique values for a given key, this * method returns a {@link Set}, instead of the {@link java.util.Collection} * specified in the {@link Multimap} interface. * * <p>Any duplicates in {@code values} will be stored in the multimap once. */ @CanIgnoreReturnValue @Override Set<V> replaceValues(K key, Iterable values); /** * {@inheritDoc} * * <p>Because a {@code SetMultimap} has unique values for a given key, this * method returns a {@link Set}, instead of the {@link java.util.Collection} * specified in the {@link Multimap} interface. */ @Override Set<Map.Entry |
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