Is there a way to handle custom java exception in OSB?

Question

For example, i created a exception that extends RuntimeException.
My exception has a new field called "code".
I want to handle this exception in Oracle Service Bus process and retrieve this code to throws another exception with a XML structure that includes the code.
Is there a way to do that ?
<con:fault xmlns:con="http://www.bea.com/wli/sb/context">
     <con:errorCode>BEA-382515</con:errorCode>
     <con:reason>Callout to java method "public static org.apache.xmlbeans.XmlObject ...</con:reason>
     <con:java-exception xmlns:con="http://www.bea.com/wli/sb/context">
         <con:java-content ref="jcid:33a6c126:14006f3df18:-7fd9"/>
     </con:java-exception>
     <con:location xmlns:con="http://www.bea.com/wli/sb/context">
         <con:node>optmusPipeline</con:node>                    
         <con:pipeline>optmusPipeline_request</con:pipeline>
         <con:stage>processStage</con:stage>
         <con:path>request-pipeline</con:path>   
     </con:location>
</con:fault>
it is not enough to recover the information i needed.

Answer 1

Hi Sandro,
I've got the same situation. I agree that returning xml from function is not a best choice as you have to manually check if return status is an error or not. Processing exception in error handler is better and this is how I do it:
I am doing a java callout to a function that can throw exception. Then I add ErrorHandler to stage containing this callout (all the exception are caught here).
In the error handler I check if $fault/ctx:java-exception is not null. If not then I pass thrown exception to my utility function that converts it to xml similar to yours:
import org.apache.xmlbeans.XmlException;
import org.apache.xmlbeans.XmlObject;
public static XmlObject exceptionToXML(Throwable exception)
  throws XmlException {
  String xmlString = exceptionToString(exception);
  return XmlObject.Factory.parse(xmlString);
public static String exceptionToString(Throwable exception) {
  String cause = "";
  if (exception.getCause() != null) {
  cause = exceptionToString(exception.getCause());
  return String
  .format("<exception><name>%s</name><description>%s</description>%s</exception>",
  exception.getClass().getName(), exception.getMessage(),
  cause);
Calling exceptionToXML with $fault/ctx:java-exception/ctx:java-content returns:
<exception>
     <name>pl.app.MyException</name>
     <description>Exception message</description>
</exception>
Then you can check the exception class (IF action: $exception/name/text() = "pl.app.MyException") and handle it accordingly.
Good luck,
Krzysiek