001    /*
002     * Copyright 2011 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    package org.kuali.kfs.gl.businessobject.options;
017    
018    import java.util.Comparator;
019    
020    import org.kuali.kfs.gl.businessobject.OriginEntryGroup;
021    
022    /**
023     * A comparator for two origin entry groups, based on the dates of their creations
024     */
025    public class OEGDateComparator implements Comparator {
026    
027        /**
028         * Constructs a OEGDateComparator
029         */
030        public OEGDateComparator() {
031        }
032    
033        /**
034         * Compares two origin entry groups, based on the dates of their creation
035         * 
036         * @param c1 the first origin entry group to compare
037         * @param c2 you can't really compare without two origin groups
038         * @return 0 if the creation dates are equal, a negative number if c1's creation date is less
039         * than c2's; a positive number otherwise
040         * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
041         */
042        public int compare(Object c1, Object c2) {
043    
044            OriginEntryGroup oeg1 = (OriginEntryGroup) c1;
045            OriginEntryGroup oeg2 = (OriginEntryGroup) c2;
046    
047            return oeg2.getDate().compareTo(oeg1.getDate());
048        }
049    
050    }