| ValueMapperUtil.java |
1 /**
2 * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or modify it under
5 * the terms of the GNU Lesser General Public License as published by the Free
6 * Software Foundation; either version 2.1 of the License, or (at your option)
7 * any later version.
8 *
9 * This library is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12 * details.
13 */
14
15 package com.liferay.portal.kernel.upgrade.util;
16
17 import com.liferay.portal.kernel.io.unsync.UnsyncBufferedWriter;
18 import com.liferay.portal.kernel.util.FileUtil;
19 import com.liferay.portal.kernel.util.StringPool;
20
21 import java.io.FileWriter;
22
23 import java.util.Iterator;
24
25 /**
26 * <a href="ValueMapperUtil.java.html"><b><i>View Source</i></b></a>
27 *
28 * @author Brian Wing Shun Chan
29 */
30 public class ValueMapperUtil {
31
32 public static void persist(
33 ValueMapper valueMapper, String tmpDir, String fileName)
34 throws Exception {
35
36 FileUtil.mkdirs(tmpDir);
37
38 UnsyncBufferedWriter unsyncBufferedWriter = new UnsyncBufferedWriter(
39 new FileWriter(tmpDir + "/" + fileName + ".txt"));
40
41 try {
42 Iterator<Object> itr = valueMapper.iterator();
43
44 while (itr.hasNext()) {
45 Object oldValue = itr.next();
46
47 Object newValue = valueMapper.getNewValue(oldValue);
48
49 unsyncBufferedWriter.write(
50 oldValue + StringPool.EQUAL + newValue);
51
52 if (itr.hasNext()) {
53 unsyncBufferedWriter.write(StringPool.NEW_LINE);
54 }
55 }
56 }
57 finally {
58 unsyncBufferedWriter.close();
59 }
60 }
61
62 }