/**
* The contents of this file are subject to the OpenMRS Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://license.openmrs.org
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* Copyright (C) OpenMRS, LLC. All Rights Reserved.
*/
package org.openmrs.util;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.velocity.app.event.MethodExceptionEventHandler;
/**
* Class to safely catch velocity exceptions
*/
public class VelocityExceptionHandler implements MethodExceptionEventHandler {
private Log log = LogFactory.getLog(this.getClass());
/**
* When a user-supplied method throws an exception, the MethodExceptionEventHandler is invoked
* with the Class, method name and thrown Exception. The handler can either return a valid
* Object to be used as the return value of the method call, or throw the passed-in or new
* Exception, which will be wrapped and propagated to the user as a MethodInvocationException
*
* @see org.apache.velocity.app.event.MethodExceptionEventHandler#methodException(java.lang.Class,
* java.lang.String, java.lang.Exception)
*/
@SuppressWarnings("unchecked")
public Object methodException(Class claz, String method, Exception e) throws Exception {
log.debug("Claz: " + claz.getName() + " method: " + method, e);
// if formatting a date (and probably getting an "IllegalArgumentException")
if ("format".equals(method))
return null;
// keep the default behavior
throw e;
}
}