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/*
 * 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.set;

import java.util.Iterator;
import java.util.NavigableSet;

/**
 * Decorates another NavigableSet to provide additional behaviour.
 * 
 * Methods are forwarded directly to the decorated set.
 *
 * @param  the type of the elements in the navigable set
 * @since 4.1
 * @version $Id: AbstractNavigableSetDecorator.java 1686855 2015-06-22 13:00:27Z tn $
 */
public abstract class AbstractNavigableSetDecorator
        extends AbstractSortedSetDecorator
        implements NavigableSet {

    /** Serialization version */
    private static final long serialVersionUID = 20150528L;

    /**
     * Constructor only used in deserialization, do not use otherwise.
     */
    protected AbstractNavigableSetDecorator() {
        super();
    }

    /**
     * Constructor that wraps (not copies).
     *
     * @param set  the set to decorate, must not be null
     * @throws NullPointerException if set is null
     */
    protected AbstractNavigableSetDecorator(final NavigableSet set) {
        super(set);
    }

    /**
     * Gets the set being decorated.
     *
     * @return the decorated set
     */
    @Override
    protected NavigableSet decorated() {
        return (NavigableSet) super.decorated();
    }

    //-----------------------------------------------------------------------

    @Override
    public E lower(E e) {
        return decorated().lower(e);
    }

    @Override
    public E floor(E e) {
        return decorated().floor(e);
    }

    @Override
    public E ceiling(E e) {
        return decorated().ceiling(e);
    }

    @Override
    public E higher(E e) {
        return decorated().higher(e);
    }

    @Override
    public E pollFirst() {
        return decorated().pollFirst();
    }

    @Override
    public E pollLast() {
        return decorated().pollLast();
    }

    @Override
    public NavigableSet descendingSet() {
        return decorated().descendingSet();
    }

    @Override
    public Iterator descendingIterator() {
        return decorated().descendingIterator();
    }

    @Override
    public NavigableSet subSet(E fromElement, boolean fromInclusive, E toElement, boolean toInclusive) {
        return decorated().subSet(fromElement, fromInclusive, toElement, toInclusive);
    }

    @Override
    public NavigableSet headSet(E toElement, boolean inclusive) {
        return decorated().headSet(toElement, inclusive);
    }

    @Override
    public NavigableSet tailSet(E fromElement, boolean inclusive) {
        return decorated().tailSet(fromElement, inclusive);
    }

}