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.web.util;
017    
018    import java.io.File;
019    import java.util.Comparator;
020    import java.util.Date;
021    
022    import org.apache.commons.lang.StringUtils;
023    
024    /**
025     * An implementation of Comparator which compares origin entry Files by their name prefix and then by last modified date
026     */
027    public class OriginEntryFileComparator implements Comparator<File> {
028    
029        public int compare(File o1, File o2) {
030            String fileName1 = o1.getName();
031            String fileName2 = o2.getName();
032    
033            // remove date from name
034            fileName1 = StringUtils.substringBefore(fileName1, ".");
035            fileName2 = StringUtils.substringBefore(fileName2, ".");
036    
037            int c = fileName1.compareTo(fileName2);
038            if (c != 0) {
039                return c;
040            }
041    
042            Date fileDate1 = new Date(o1.lastModified());
043            Date fileDate2 = new Date(o2.lastModified());
044    
045            return fileDate1.compareTo(fileDate2);
046        }
047    
048    }