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From "Huditsch, Roman \(LNG-VIE\)" <Roman.Hudit...@lexisnexis.at>
Subject AW: using <xmlvalidate> task with XML Schema 1.1 and Saxon
Date Mon, 10 May 2010 09:51:51 GMT
Hi Graham,

That's a very interesting approach. I will definitely try to do it that way.
And it's way better than what I have to the moment (calling a batch file that does the saxon
validation call).

Thanks,
Roman


Mag. (FH) Roman Huditsch
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-----Urspr√ľngliche Nachricht-----

Von: Heath, Graham [mailto:graham.heath@ts.fujitsu.com] 
Gesendet: Montag, 10. Mai 2010 11:19
An: user@ant.apache.org
Cc: Michael Kay
Betreff: using <xmlvalidate> task with XML Schema 1.1 and Saxon

Greetings readers,

just to add my take on this..

I use ant extensively and with saxon too. My first attempts used the ant <xlst> task,
but that fell over when my stylesheets needed to use xslt2.0.
So I switched to <saxon-xslt>, except that then I could not switch on line-numbers and
tracing. After a discussion on the Saxon list Mike Kay updated Saxon so that  the remaining
gotchas from the <xslt> task were covered. This rendered the <saxon-xslt> task
as deprecated. So I have now switched back to the <xslt> task. Whereupon I also found
validation did not work. My validation task calls java direct.. Just at the moment it is not
a satisfactory solution as the java task does not fail even though the validation failed.
I think I remember reading something about that ages ago... Note that my task is actually
a macro which does other validation too..
      <java fork="true" classname="com.saxonica.Validate" failonerror="true"
        resultproperty="rcodeSaxonValidate">
        <classpath>
          <pathelement location="${SaxonJar}"/>
        </classpath>
        <arg value="-s:@{in}"/>
        <arg value="-xsd:@{xsd}"/>
        <arg value="-val:@{validationlevel}"/>
      </java>

I include here Mike Kay's offline assessment of using saxon validate inside ant.

>It looks as if this task relies on the validation engine implementing XMLReader - that
is, it's assuming validation is something that parsers do.
>I would have expected something that expects to work with any validation engine to use
javax.xml.vaidation.Validator, or ValidationHandler, both of 
>which Saxon does implement.  I guess it's easy enough to provide a wrapper that implements
XMLReader if people need it.
>
>It's just a shame that ValidatorHandler is a concrete class rather than an interface.
Otherwise I could have made ValidatorHandlerImpl extend XMLFilter, >and you would get an
XMLReader for free.
>
>Regards,
>
>Mike

>>Hi Mike, this looks like a similar problem that I have faced  (and run 
>>away from).
>>
>> I reverted in the end to calling saxon directly from the command 
>>line for validation..

Hope this helps

Cheers
Graham


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