org.jimcat.model.comparator.ComparatorChainProxy.java Source code

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Here is the source code for org.jimcat.model.comparator.ComparatorChainProxy.java

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/*
 *  This file is part of JimCat.
 *
 *  JimCat is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation version 2.
 *
 *  JimCat is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with JimCat; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

package org.jimcat.model.comparator;

import java.util.Comparator;

import org.apache.commons.collections.comparators.ComparatorChain;

/**
 * A Proxy that ensures type safety for the comparator chain.
 * 
 * @see org.apache.commons.collections.comparators.ComparatorChain
 * 
 * $Id$
 * 
 * @author csag1760
 * @param <T> 
 */
public class ComparatorChainProxy<T> implements Comparator<T> {

    private ComparatorChain chain = new ComparatorChain();

    /**
     * @param comp
     * @param b
     * @see org.apache.commons.collections.comparators.ComparatorChain#addComparator(java.util.Comparator,
     *      boolean)
     */
    public void addComparator(Comparator<T> comp, boolean b) {
        chain.addComparator(comp, b);
    }

    /**
     * @return the size of the comparator chain
     * @see org.apache.commons.collections.comparators.ComparatorChain#size()
     */
    public int size() {
        return chain.size();
    }

    /**
     * @param comp
     * @see org.apache.commons.collections.comparators.ComparatorChain#addComparator(java.util.Comparator)
     */
    public void addComparator(Comparator<T> comp) {
        chain.addComparator(comp);
    }

    /**
     * @param o1
     * @param o2
     * @return zero if equal, a value lower than zero if o1 is smaller than o2,
     *         else a value greater than zero.
     * @throws UnsupportedOperationException
     * @see org.apache.commons.collections.comparators.ComparatorChain#compare(java.lang.Object,
     *      java.lang.Object)
     */
    public int compare(T o1, T o2) throws UnsupportedOperationException {
        return chain.compare(o1, o2);
    }

}