1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.upgrade.util;
24  
25  import com.liferay.portal.kernel.io.unsync.UnsyncBufferedWriter;
26  import com.liferay.portal.kernel.util.FileUtil;
27  import com.liferay.portal.kernel.util.StringPool;
28  
29  import java.io.FileWriter;
30  
31  import java.util.Iterator;
32  
33  /**
34   * <a href="ValueMapperUtil.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Brian Wing Shun Chan
37   */
38  public class ValueMapperUtil {
39  
40      public static void persist(
41              ValueMapper valueMapper, String tmpDir, String fileName)
42          throws Exception {
43  
44          FileUtil.mkdirs(tmpDir);
45  
46          UnsyncBufferedWriter unsyncBufferedWriter = new UnsyncBufferedWriter(
47              new FileWriter(tmpDir + "/" + fileName + ".txt"));
48  
49          try {
50              Iterator<Object> itr = valueMapper.iterator();
51  
52              while (itr.hasNext()) {
53                  Object oldValue = itr.next();
54  
55                  Object newValue = valueMapper.getNewValue(oldValue);
56  
57                  unsyncBufferedWriter.write(
58                      oldValue + StringPool.EQUAL + newValue);
59  
60                  if (itr.hasNext()) {
61                      unsyncBufferedWriter.write(StringPool.NEW_LINE);
62                  }
63              }
64          }
65          finally {
66              unsyncBufferedWriter.close();
67          }
68      }
69  
70  }