/*
 * 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.bag;

import java.util.Set;

import org.apache.commons.collections4.Bag;
import org.apache.commons.collections4.collection.AbstractCollectionDecorator;

/**
 * Decorates another Bag to provide additional behaviour.
 * 

* Methods are forwarded directly to the decorated bag. * * @since 3.0 * @version $Id$ */ public abstract class AbstractBagDecorator extends AbstractCollectionDecorator implements Bag { /** Serialization version */ private static final long serialVersionUID = -3768146017343785417L; /** * Constructor only used in deserialization, do not use otherwise. * @since 3.1 */ protected AbstractBagDecorator() { super(); } /** * Constructor that wraps (not copies). * * @param bag the bag to decorate, must not be null * @throws NullPointerException if bag is null */ protected AbstractBagDecorator(final Bag bag) { super(bag); } /** * Gets the bag being decorated. * * @return the decorated bag */ @Override protected Bag decorated() { return (Bag) super.decorated(); } @Override public boolean equals(final Object object) { return object == this || decorated().equals(object); } @Override public int hashCode() { return decorated().hashCode(); } //----------------------------------------------------------------------- @Override public int getCount(final Object object) { return decorated().getCount(object); } @Override public boolean add(final E object, final int count) { return decorated().add(object, count); } @Override public boolean remove(final Object object, final int count) { return decorated().remove(object, count); } @Override public Set uniqueSet() { return decorated().uniqueSet(); } }