Re: SPARQL 1.1 Protocol: Format of fault messages

On 1 Oct 2010, at 15:59, Ian Davis wrote:
>> I agree with this principle. But a human cannot debug the error  
>> message if
>> it isn't passed through all layers of the system up to the user.
> That is outside the scope of the sparql protocol and is client
> application dependent.

Reliable communication of error conditions to protocol clients is in  
scope of any protocol.


>>> so therefore I favour plain text
>>> error messages.
>> Plain text is certainly one step forward from an HTML error page  
>> containing
>> a Java stack trace.
>>> Underconstraining the spec in this case is a better option.
>> Underconstraining means that some implementations will continue to  
>> use HTML
>> error pages, which do not allow reliable reporting of error  
>> messages to a
>> human if the human uses a SPARQL library or SPARQL client to  
>> interact with
>> the endpoint.
>> Hence, the position you advocate makes it less likely that a user  
>> will
>> actually see an error message.
> That is up to the client application. Constraining the output puts
> restrictions on the client applications that I don't think are
> appropriate.
> Ian

Received on Friday, 1 October 2010 19:38:45 UTC