001/**
002 * Copyright 2005-2016 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016/*
017 * To change this template, choose Tools | Templates
018 * and open the template in the editor.
019 */
020package org.kuali.rice.krms.impl.repository;
021
022import java.util.Comparator;
023import org.kuali.rice.krms.api.repository.proposition.PropositionDefinition;
024import org.kuali.rice.krms.api.repository.typerelation.TypeTypeRelation;
025
026/**
027 *
028 * @author nwright
029 */
030public class CompoundPropositionComparator implements Comparator<PropositionDefinition> {
031    
032    @Override
033    public int compare(PropositionDefinition o1, PropositionDefinition o2) {
034        Integer seq1 = buildKey (o1);
035        Integer seq2 = buildKey (o2);
036        return seq1.compareTo(seq2);
037    }
038    
039    private static final Integer ZERO = new Integer (0);
040    private Integer buildKey (PropositionDefinition prop) {
041        if (prop.getCompoundSequenceNumber() != null) {
042            return prop.getCompoundSequenceNumber ();
043        }
044        return ZERO;
045    }
046}