001/*
002 * Copyright 2009 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 */
016package org.kuali.ole.sys.businessobject;
017
018import java.util.Comparator;
019
020import org.kuali.rice.krad.util.ObjectUtils;
021
022/**
023 * The standard comparator for AccountingLine objects
024 */
025public class AccountingLineComparator implements Comparator<AccountingLine> {
026    
027    /**
028     * Compares two accounting lines based on their sequence number
029     * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
030     */
031    public int compare(AccountingLine rosencrantz, AccountingLine guildenstern) {
032        if (ObjectUtils.isNotNull(rosencrantz) && ObjectUtils.isNotNull(guildenstern))
033            if (ObjectUtils.isNotNull(rosencrantz.getSequenceNumber()) && ObjectUtils.isNotNull(guildenstern.getSequenceNumber()))
034                return rosencrantz.getSequenceNumber().compareTo(guildenstern.getSequenceNumber());
035        return 0;
036    }
037    
038}