Long running conversation and Hibernate Validation

[pmuir]

I'm trying to get validation to work in long running conversations:-

 @Begin(join=true)
 public String findVenues() {
 // Utility method, sets up an outjected DataModel
 findAll();
 // Redirect to result display page
 return "displayFoundVenues";
 }

 public String editVenue() {
 // Set the bijected venue to the DataModelSelection
 venue = selectedVenue;
 // Redirect to edit venue page
 return "editVenue";
 }

 @IfInvalid(outcome=Outcome.REDISPLAY)
 @End
 public String updateVenue() {
 // Clear the venues found in the previous search
 venues = null;
 // Redirect to the venue search page
 return "venueSearch";
 }

If any of the fields in the venue Entity are invalid an

InvalidStateException: validation failed for: uk.co.splendid.sms.model.venue.Venue

occurs.

If I 'split' the updateVenueMethod

 @IfInvalid(outcome=Outcome.REDISPLAY)
 @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)
 public String updateVenue() {
 return "confirm";
 }

 @End
 public String exit() {
 venues = null;
 return "venueSearch";
 }

and add in @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED) then it will work fine and displays the valididation error messages. However this behaviour is not what I need - I want the user to be able to click the 'Save' button and the changes to the object to be persisted if it is valid or the screen redisplayed if it is not.

Any ideas? If I need to post more code/log messages I can do.

TIA

Peter