AbstractMultiSetDecorator.java
- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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 org.apache.commons.collections4.multiset;
- import java.util.Set;
- import org.apache.commons.collections4.MultiSet;
- import org.apache.commons.collections4.collection.AbstractCollectionDecorator;
- /**
- * Decorates another {@code MultiSet} to provide additional behavior.
- * <p>
- * Methods are forwarded directly to the decorated multiset.
- * </p>
- *
- * @param <E> the type held in the multiset
- * @since 4.1
- */
- public abstract class AbstractMultiSetDecorator<E>
- extends AbstractCollectionDecorator<E> implements MultiSet<E> {
- /** Serialization version */
- private static final long serialVersionUID = 20150610L;
- /**
- * Constructor only used in deserialization, do not use otherwise.
- */
- protected AbstractMultiSetDecorator() {
- }
- /**
- * Constructor that wraps (not copies).
- *
- * @param multiset the multiset to decorate, must not be null
- * @throws NullPointerException if multiset is null
- */
- protected AbstractMultiSetDecorator(final MultiSet<E> multiset) {
- super(multiset);
- }
- @Override
- public int add(final E object, final int count) {
- return decorated().add(object, count);
- }
- /**
- * Gets the multiset being decorated.
- *
- * @return the decorated multiset
- */
- @Override
- protected MultiSet<E> decorated() {
- return (MultiSet<E>) super.decorated();
- }
- @Override
- public Set<Entry<E>> entrySet() {
- return decorated().entrySet();
- }
- @Override
- public boolean equals(final Object object) {
- return object == this || decorated().equals(object);
- }
- @Override
- public int getCount(final Object object) {
- return decorated().getCount(object);
- }
- @Override
- public int hashCode() {
- return decorated().hashCode();
- }
- @Override
- public int remove(final Object object, final int count) {
- return decorated().remove(object, count);
- }
- @Override
- public int setCount(final E object, final int count) {
- return decorated().setCount(object, count);
- }
- @Override
- public Set<E> uniqueSet() {
- return decorated().uniqueSet();
- }
- }