001    /**
002     * Copyright 2005-2013 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     */
020    package org.kuali.rice.krms.impl.repository;
021    
022    import java.util.Comparator;
023    import org.kuali.rice.krms.api.repository.proposition.PropositionDefinition;
024    import org.kuali.rice.krms.api.repository.typerelation.TypeTypeRelation;
025    
026    /**
027     *
028     * @author nwright
029     */
030    public 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    }