1 /*
2 * EL4J, the Extension Library for the J2EE, adds incremental enhancements to
3 * the spring framework, http://el4j.sf.net
4 * Copyright (C) 2005 by ELCA Informatique SA, Av. de la Harpe 22-24,
5 * 1000 Lausanne, Switzerland, http://www.elca.ch
6 *
7 * EL4J is published under the GNU Lesser General Public License (LGPL)
8 * Version 2.1. See http://www.gnu.org/licenses/
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
14 *
15 * For alternative licensing, please contact info@elca.ch
16 */
17
18 package ch.elca.el4j.services.exceptionhandler.handler;
19
20 import org.aopalliance.intercept.MethodInvocation;
21 import org.slf4j.Logger;
22
23 import ch.elca.el4j.services.exceptionhandler.AbstractExceptionHandlerInterceptor;
24 import ch.elca.el4j.services.exceptionhandler.RetryException;
25
26 /**
27 * This class implements an exception handler that tries to call the target
28 * several times after waiting a configurable delay.
29 *
30 * @svnLink $Revision: 3883 $;$Date: 2009-08-04 15:35:01 +0200 (Di, 04. Aug 2009) $;$Author: swismer $;$URL: https://el4j.svn.sourceforge.net/svnroot/el4j/branches/el4j_3_1/el4j/framework/modules/exception_handling/src/main/java/ch/elca/el4j/services/exceptionhandler/handler/RetryExceptionHandler.java $
31 *
32 * @author Andreas Bur (ABU)
33 */
34 public class RetryExceptionHandler extends AbstractRetryExceptionHandler {
35
36 /**
37 * Time to wait between two successive invocations in milli seconds. Default
38 * is <code>0</code>.
39 */
40 private int m_sleepMillis = 0;
41
42 /**
43 * Sets the amount of time in milli seconds between two successive
44 * invocations.
45 *
46 * @param sleepMillis
47 * The time in milli seconds to wait.
48 */
49 public void setSleepMillis(int sleepMillis) {
50 m_sleepMillis = sleepMillis;
51 }
52
53 /**
54 * {@inheritDoc}
55 */
56 protected Object retry(Throwable t,
57 AbstractExceptionHandlerInterceptor exceptionInvoker,
58 MethodInvocation invocation, Logger logger) throws Throwable {
59
60 if (m_sleepMillis > 0) {
61 Thread.sleep(m_sleepMillis);
62 }
63
64 throw new RetryException(getRetries());
65 }
66 }