AbstractBagDecorator.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.bag;
import java.util.Set;
import org.apache.commons.collections4.Bag;
import org.apache.commons.collections4.collection.AbstractCollectionDecorator;
/**
* Decorates another {@code Bag} to provide additional behavior.
* <p>
* Methods are forwarded directly to the decorated bag.
* </p>
*
* @param <E> the type of elements in this bag
* @since 3.0
*/
public abstract class AbstractBagDecorator<E>
extends AbstractCollectionDecorator<E> implements Bag<E> {
/** Serialization version */
private static final long serialVersionUID = -3768146017343785417L;
/**
* Constructor only used in deserialization, do not use otherwise.
* @since 3.1
*/
protected AbstractBagDecorator() {
}
/**
* 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<E> bag) {
super(bag);
}
@Override
public boolean add(final E object, final int count) {
return decorated().add(object, count);
}
/**
* Gets the bag being decorated.
*
* @return the decorated bag
*/
@Override
protected Bag<E> decorated() {
return (Bag<E>) super.decorated();
}
@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 boolean remove(final Object object, final int count) {
return decorated().remove(object, count);
}
@Override
public Set<E> uniqueSet() {
return decorated().uniqueSet();
}
}