- From: Michael Sokolov <sokolov@falutin.net>
- Date: Fri, 13 Sep 2013 11:24:23 -0400
- To: EXPath <public-expath@w3.org>
I'm investigating the possibility of implementing the request/response parts of the webapp specification, and I'd like to propose some (small) amendments. The spec indicates that the HTTP request is supposed to be provided as the context item for the evaluation, but is also provided as a global variable. My practice in Lux has been to supply an implicit collection() as a context for evaluation, and I think the requirement to provide the HTTP request would conflict with that. It seems to me that the global variable binding is sufficient to provide applications with the HTTP request, and the query context should be reserved as implementation-dependent. Regarding the response; it is currently specified that applications must return a web:response element. I currently allow any value to be returned. If the value is a single node, it is interpreted as the response body, status=200; content-type is provided through external configuration of the service. This is a nice convenience to have built into the service, I think, and doesn't need to conflict with the spec. In addition, If a sequence or atomic value is returned, I apply some heuristics to arrive at a valid document. I'd like to amend the specification to indicate that returning any value is permissible, but the behavior when the result is not a single web:response is implementation-defined. This leaves the door open for convenient implementations, but allows applications to rely on a consistent behavior from their container so long as they use the <web:response> element. Finally I'd like to be able to say I'm complying with the (some) spec without implementing the app packaging. This is probably just a formality, but it would be nice to have a separate name for these two parts of the spec since I believe they are useful independently. I could say that Lux uses the "EXPath http protocol?" looking forward to your thoughts -Mike Sokolov
Received on Friday, 13 September 2013 15:25:29 UTC