Transactions

[jackcholt]

I get a NoSuchFlowExecutionException occasionally, not because the flow has ended and not because I'm using the back button. It appears that it happens when the session has expired. Therefore, I'd like to catch it and take the user to a page that explains that their session may have ended and give them the opportunity to start a new flow.

Where and how is the best place to do this?

[klr8]

When the session expires, all ongoing FlowExecutions in it will also expire so it's normal that you get NoSuchFlowExecutionException in that case.
At this moment SWF doesn't have its own exception handling system, so it's not (yet) possible to have exception handling rules 'per flow'. However, you have a few global options:

* Exception page definitions in web.xml
* A HandlerExceptionResolver in SpringMVC
* Global exception forwards in Struts

Erwin