1 /*
2 * Copyright (C) 2012 The Guava Authors
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package com.google.common.collect;
18
19 import com.google.common.annotations.GwtCompatible;
20 import java.util.Collection;
21 import java.util.Set;
22 import java.util.SortedMap;
23 import java.util.SortedSet;
24
25 /**
26 * Basic implementation of a {@link SortedSetMultimap} with a sorted key set.
27 *
28 * <p>This superclass allows {@code TreeMultimap} to override methods to return navigable set and
29 * map types in non-GWT only, while GWT code will inherit the SortedMap/SortedSet overrides.
30 *
31 * @author Louis Wasserman
32 */
33 @GwtCompatible
34 abstract class AbstractSortedKeySortedSetMultimap<K, V> extends AbstractSortedSetMultimap<K, V> {
35
36 AbstractSortedKeySortedSetMultimap(SortedMap<K, Collection<V>> map) {
37 super(map);
38 }
39
40 @Override
41 public SortedMap<K, Collection<V>> asMap() {
42 return (SortedMap<K, Collection<V>>) super.asMap();
43 }
44
45 @Override
46 SortedMap<K, Collection<V>> backingMap() {
47 return (SortedMap<K, Collection<V>>) super.backingMap();
48 }
49
50 @Override
51 public SortedSet<K> keySet() {
52 return (SortedSet<K>) super.keySet();
53 }
54
55 @Override
56 Set<K> createKeySet() {
57 return createMaybeNavigableKeySet();
58 }
59 }