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Re: New to Xproc Question : conditionnal "output port" definition?

From: Matthieu Ricaud-Dussarget <matthieu.ricaud@igs-cp.fr>
Date: Wed, 12 Oct 2011 18:49:19 +0200
Message-ID: <4E95C50F.2050506@igs-cp.fr>
To: xproc-dev@w3.org
Thanks for the information about p:xpath-context, which I naturally 
didn't know.
For the moment I still let p:identity, but I keep this in mind !

Thanks for your help.


Le 12/10/2011 17:31, Norman Walsh a écrit :
> Matthieu Ricaud-Dussarget<matthieu.ricaud@igs-cp.fr>  writes:
>> Once again, thanks a lot for your help.
>>> <p:xslt ... name="xslt"/>
>>> <p:store .../>
>>> ...
>>> <p:error ...>
>>> 	<p:input port="source">
>>> 		<p:pipe step="xslt" port="result"/>
>>> 	</p:input>
>>> </p:error>
>> I thought the input port of<p:error>  shall contains the error message
>> itself (within<p:inline>  for example). I guess I have to get
>> information on how to deal with error code and message to display.
>> Anyway the problem is just above :
>> <p:when
>> test="count(distinct-values(/igs:aggregate/doc/pages/page/@viewportX))!=1">
>> <p:error ...>
>> </p:when>
>> My guess is that the xproc processor is not able to perform the xpath
>> test above because it can't define a context node at this point of the
>> pipeline... because just above is a<p:store>  which doesn't through any
>> output!
> I've lost track of the whole pipeline, but you can provide the context
> for a p:when with p:xpath-context:
>    <p:when test="...">
>      <p:xpath-context>
>        <p:pipe .../>
>    ...
>>> But since this is a common case, it is worthwhile to declare a helper step to do that.
>> 100% agree !
>>> I wrote the following, which combines a p:store with such input
>>> rerouting, together with a p:choose so the p:store is only done if a
>>> debug parameter was passed through..
>> I actually don't know how to use such a self define step.
>> My xpl file starts with<p:declared-step>  element : It seems I can't add
>> a<p:declared-step>  within my root element<p:declared-step>.
>> I thought I should put it in another xpl document and then import it
>> from my current xpl with<p:import>  but... It's seems<p:import>  is not
>> allowed as child of<p:declared-step>.
> You can put a declare-step inside a declare-step. If you're having trouble,
> it'll be easier to figure out if you post the pipeline that's causing problems.
>                                          Be seeing you,
>                                            norm

Matthieu Ricaud
Service Livre numérique
Received on Wednesday, 12 October 2011 16:49:52 UTC

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