Hi Marc,
* AFAIK it is not possible to get the generic class of the
implementation of a generic interface. So how to get the exception
type of a concrete ExcpetionMapper? Sorry, that this comes late.
If I miss something, please let me know. (Java 5.0, not only 6.0)
* Should the ExceptionMapper also be used, if a @*Param conversion
throws an Exception and no Default is available? IMO not, because:
o For problems while converting to @PathParam and @MatrixParam
I think status 404 (not found) is the best: If the an URI
part could not be converted (e.g. int as id required, but a
unconvertable String was given), the resource does not
exist. Because the ExceptionMapper doesn't really know the
source of the exception, it could not react differentiated.
o For problems while converting to @CookieParam, @HeaderParam
and @QueryParam I prefer 400 (bad request).
o IMO a special handling is only useful for
WebApplciationExceptions (to be mapped as every
WebApplicationException), but theoretical this is not
allowed, but may occur.
* IMO it is useful to add also explicit to the javadoc
ExceptionMapper.toResponse(.), that this method should not throw
an WebApplicationException, because it is allowed at nearly all
code point.
best regards
Stephan