1 /*
2 * Copyright 2009 The Kuali Foundation
3 *
4 * Licensed under the Educational Community License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.opensource.org/licenses/ecl2.php
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.kuali.ole.gl.web.util;
17
18 import java.io.File;
19 import java.util.Comparator;
20 import java.util.Date;
21
22 import org.apache.commons.lang.StringUtils;
23
24 /**
25 * An implementation of Comparator which compares origin entry Files by their name prefix and then by last modified date
26 */
27 public class OriginEntryFileComparator implements Comparator<File> {
28
29 public int compare(File o1, File o2) {
30 String fileName1 = o1.getName();
31 String fileName2 = o2.getName();
32
33 // remove date from name
34 fileName1 = StringUtils.substringBefore(fileName1, ".");
35 fileName2 = StringUtils.substringBefore(fileName2, ".");
36
37 int c = fileName1.compareTo(fileName2);
38 if (c != 0) {
39 return c;
40 }
41
42 Date fileDate1 = new Date(o1.lastModified());
43 Date fileDate2 = new Date(o2.lastModified());
44
45 return fileDate1.compareTo(fileDate2);
46 }
47
48 }