Error Handling

[ChristianGruen]

Yet another idea: we’d like to introduce some error handling in RESTXQ. Our current favorite would be to specify a '%rest:error' annotation. If a function is decorated with this annotation, it could be called for certain HTTP codes or XQuery errors. Two examples:

  %rest:error(404, "{$msg}") { … }
  %rest:error("XPTY0004", "{$msg}") { … }

In this proposal, HTTP codes are specified via integers, and XQuery errors are specified as string. We could also introduce two different annotations to make the difference more explicit.

Feedback is welcome!

[ChristianGruen]

This is how we've now realized RESTXQ error handling in BaseX: http://docs.basex.org/wiki/RESTXQ#Error_Handling