Hmm, I tried going down the onViolation / onFailure paths, but ran in to
other problems with those.
For onFailure, is there a way to send a valueProxy back inside the exception
payload? It looks like the default behavior is just to extract the message
out of any thrown exception. I'd like to return my errors to the client in
a meaningful format so I can mark up the editor. I guess worst case I could
serialize the object array as a string and decode it on the client, but I'd
like to avoid that if possible.
onConstraintViolation is what I really wanted, but couldn't find any hooks
on the server side to allow me to convert my legacy application's
server-side violations into the necessary ViolationMessages. Basically I'd
like to run the code from the
SimpleRequestProcessor:process(request,response) function:
// Validate entities
List<ViolationMessage> errorMessages = validateEntities(source);
if (!errorMessages.isEmpty()) {
resp.setViolations(errorMessages);
return;
}
but rather than get the errors from the validateEntries method, my service
layer method invocation will either return or throw them. Unfortunately it
doesn't look like the SimpleRequestProcessor is override-able since it's
declared private final in the RequestFactoryServlet, and I couldn't find any
hooks to allow me to post-process the response after the invocation.
Thanks,
Eric
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