- From: <bugzilla@jessica.w3.org>
- Date: Sat, 17 Apr 2010 11:34:12 +0000
- To: www-xml-schema-comments@w3.org
http://www.w3.org/Bugs/Public/show_bug.cgi?id=9539
Mukul Gandhi <gandhi.mukul@gmail.com> changed:
What |Removed |Added
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CC| |gandhi.mukul@gmail.com
--- Comment #3 from Mukul Gandhi <gandhi.mukul@gmail.com> 2010-04-17 11:34:17 ---
(In reply to comment #0)
> A Saxonica client wrote today asking for facilities to specify the error
> message that should be produced when validation against an assertion fails.
>
> I was able to point him in the direction of Saxon's extension in this area,
> documented here:
>
> http://www.saxonica.com/documentation/schema-processing/extensions11/saxon.message.html
>
> The client commented that it would be extremely useful to have this as a
> standard facility in the spec.
>
> Note that Saxon makes this available on all facets, not only xs:assert. It can
> be very useful, for example, on the xs:pattern facet.
+1 from me for this enhancement.
I wish to know the opinion of WG, the pros & cons of following two approaches,
for this need:
a)
<xs:assert test="...">
<xs:annotation>
<xs:appinfo>
<xs:message>
error message ...
</xs:message>
</xs:appinfo>
</xs:annotation>
</xs:assert>
b) xs:assert test="..." message="..."
The advantage of, the means b) to me looks, that it is more easy to specify &
very much less verbose (hence easy for schema authors to specify), than means,
a).
The advantage, of a) looks to me, that we can re-use an existing framework, of
annotations, for assertions messages.
I have a feeling, to go for solution, b) (the advantage of less-verboseness, of
2nd option looks to me, many folds if we have lot of assertions in the schema).
Regards,
Mukul
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Received on Saturday, 17 April 2010 11:34:19 UTC