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 simplifies the implementation of exception handlers that use
28 * another implementation with the same semantic to fulfil the callers
29 * invocation. This is achieved by reconfiguring the class that is advised by
30 * this exception handler's interceptor.
31 *
32 * @svnLink $Revision: 3873 $;$Date: 2009-08-04 13:59:45 +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/AbstractReconfigureExceptionHandler.java $
33 *
34 * @author Andreas Bur (ABU)
35 * @see ch.elca.el4j.services.exceptionhandler.handler.AbstractSwappableTargetExceptionHandler
36 */
37 public abstract class AbstractReconfigureExceptionHandler extends
38 AbstractRetryExceptionHandler {
39
40 /**
41 * {@inheritDoc}
42 */
43 protected Object retry(Throwable t,
44 AbstractExceptionHandlerInterceptor exceptionInvoker,
45 MethodInvocation invocation, Logger logger) throws Throwable {
46
47 reconfigure(t, invocation, logger);
48 throw new RetryException(getRetries());
49 }
50
51 /**
52 * Subclasses have to reconfigure the advised target.
53 *
54 * @param t
55 * The exception that caused this strategy. Subclasses may distinguish
56 * between different exception types.
57 *
58 * @param invocation
59 * The original invocation that failed.
60 *
61 * @param logger
62 * The logger.
63 */
64 protected abstract void reconfigure(Throwable t,
65 MethodInvocation invocation, Logger logger);
66 }