| /* |
| * Copyright (C) 2013 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.testing.google; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.collect.Multiset; |
| import com.google.common.collect.testing.features.Feature; |
| import com.google.common.collect.testing.features.TesterAnnotation; |
| import java.lang.annotation.Inherited; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.util.Collections; |
| import java.util.Set; |
| |
| /** |
| * Optional features of classes derived from {@link Multiset}. |
| * |
| * @author Louis Wasserman |
| */ |
| @GwtCompatible |
| public enum MultisetFeature implements Feature<Multiset> { |
| /** |
| * Indicates that elements from {@code Multiset.entrySet()} update to reflect changes in the |
| * backing multiset. |
| */ |
| ENTRIES_ARE_VIEWS; |
| |
| @Override |
| public Set<Feature<? super Multiset>> getImpliedFeatures() { |
| return Collections.emptySet(); |
| } |
| |
| @Retention(RetentionPolicy.RUNTIME) |
| @Inherited |
| @TesterAnnotation |
| public @interface Require { |
| public abstract MultisetFeature[] value() default {}; |
| |
| public abstract MultisetFeature[] absent() default {}; |
| } |
| } |