1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portal.job;
21  
22  import com.liferay.portal.kernel.job.IntervalJob;
23  import com.liferay.portal.kernel.log.Log;
24  import com.liferay.portal.kernel.log.LogFactoryUtil;
25  
26  import org.quartz.JobDetail;
27  import org.quartz.JobExecutionContext;
28  import org.quartz.StatefulJob;
29  
30  /**
31   * <a href="JobWrapper.java.html"><b><i>View Source</i></b></a>
32   *
33   * @author Brian Wing Shun Chan
34   *
35   */
36  public class JobWrapper implements StatefulJob {
37  
38      public void execute(JobExecutionContext context) {
39          try {
40              if (_job == null) {
41                  JobDetail jobDetail = context.getJobDetail();
42  
43                  Class<IntervalJob> intervalJobClass = JobClassUtil.get(
44                      jobDetail.getName());
45  
46                  _classLoader = intervalJobClass.getClassLoader();
47  
48                  _job = (IntervalJob)_classLoader.loadClass(
49                      intervalJobClass.getName()).newInstance();
50              }
51  
52              Thread currentThread = Thread.currentThread();
53  
54              ClassLoader contextClassLoader =
55                  currentThread.getContextClassLoader();
56  
57              try {
58                  currentThread.setContextClassLoader(_classLoader);
59  
60                  _job.execute(new JobExecutionContextImpl(context));
61              }
62              finally {
63                  currentThread.setContextClassLoader(contextClassLoader);
64              }
65          }
66          catch (Exception e) {
67              _log.error(e, e);
68          }
69      }
70  
71      private static Log _log = LogFactoryUtil.getLog(JobWrapper.class);
72  
73      private ClassLoader _classLoader;
74      private IntervalJob _job;
75  
76  }