JSF 1.2 postback calls swallow the exception

Question

Hi All,
I have a problem in handling a exception thrown during a post back request.
Here is the scenario:
I have a valueChangeLsitener on an inputText component, and say some exception is thrown from the valueChangeListener, JSF swallows the exception and doesn’t throw it to outer exception handlers.
Code:
<af:inputText label="Project#-Job#: "
required="true"
autoSubmit="true"
valueChangeListener="#{createRevisionProjectBB.getProjJobDetail}"
value="#{revisionProjectMB.paProjectJob}"/>
public void fetchProjDetail() throws Exception {     
throw new Exception("some exception");
I would expect this to be caught in the global exception handler, but this is not thrown to the base exception.
any idea? Have you guys come across this sometime?
Regards,
Parthiban

Answer 1

Hi,
the ADFc handler does not catch errors beyond a specific point in the lifecycle. In your case surrounding the code with a try/catch block probably helps.
See: http://forums.sun.com/thread.jspa?threadID=5283046
Alternatively you can try to extend the ADFc exception handler to see if the exception shows
http://thepeninsulasedge.com/frank_nimphius/2010/02/01/how-to-create-custom-adfc-exception-handler/
Note that exceptions in an ADF region are not passed to the exception handler of the parent task flow. In this case try and define a exception handler for the bounded task flow
Frank