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.upgrade.util;
24  
25  import com.liferay.portal.kernel.dao.db.DB;
26  import com.liferay.portal.kernel.dao.db.DBFactoryUtil;
27  import com.liferay.portal.kernel.log.Log;
28  import com.liferay.portal.kernel.log.LogFactoryUtil;
29  import com.liferay.portal.kernel.upgrade.UpgradeException;
30  import com.liferay.portal.kernel.util.FileUtil;
31  import com.liferay.portal.kernel.util.Validator;
32  
33  /**
34   * <a href="BaseUpgradeTableImpl.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Alexander Chow
37   * @author Brian Wing Shun Chan
38   */
39  public abstract class BaseUpgradeTableImpl extends Table {
40  
41      public BaseUpgradeTableImpl(String tableName) {
42          super(tableName);
43      }
44  
45      public BaseUpgradeTableImpl(String tableName, Object[][] columns) {
46          super(tableName, columns);
47      }
48  
49      public void setCreateSQL(String createSQL) throws Exception {
50          if (_calledUpdateTable) {
51              throw new UpgradeException(
52                  "setCreateSQL is called after updateTable");
53          }
54  
55          super.setCreateSQL(createSQL);
56      }
57  
58      public void updateTable() throws Exception {
59          _calledUpdateTable = true;
60  
61          String tempFileName = generateTempFile();
62  
63          try {
64              DB db = DBFactoryUtil.getDB();
65  
66              String createSQL = getCreateSQL();
67  
68              if (Validator.isNotNull(createSQL)) {
69                  db.runSQL("drop table " + getTableName());
70  
71                  db.runSQL(createSQL);
72              }
73  
74              if (Validator.isNotNull(tempFileName)) {
75                  String deleteSQL = getDeleteSQL();
76  
77                  db.runSQL(deleteSQL);
78  
79                  populateTable(tempFileName);
80              }
81          }
82          finally {
83              if (Validator.isNotNull(tempFileName)) {
84                  FileUtil.delete(tempFileName);
85              }
86          }
87      }
88  
89      static Log _log = LogFactoryUtil.getLog(BaseUpgradeTableImpl.class);
90  
91      private boolean _calledUpdateTable;
92  
93  }