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Re: [www-voice] <none>

From: Jon Kerny <jon.kerny@gmail.com>
Date: Wed, 4 May 2016 21:54:50 +0200
Message-ID: <CAC5YMgHyVReB6Fo2iMWjiR08Udb7qx24xayUMgKqch8oWPynBQ@mail.gmail.com>
To: www-voice@w3.org
Hi Jim,

I see that I haven't read the information, I made the assumtion that
https://www.w3.org/TR/scxml-xpath-dm/ was still worked on. I have a mostly
working implementation of both the ecmascript and xpath data models, 354 is
one of a handful tests that currently doesn't pass.

On the topic of 354 I think that the xpath should be event/data/data[@id='']/
and not event/data/data[@id='']/data/.

thanks for the good work,

Jon

On Tue, May 3, 2016 at 6:55 PM, Jim Barnett <1jhbarnett@gmail.com> wrote:

> Jon,
>
>   One of the main reasons that the XPath data model was removed from the
> final draft of the specification was because there wasn't agreement on the
> underlying data structures.   In particular, the wasn't agreement on what
> XPath XSLT file should produce as output.   As a result, the existing XSLT
> file for Xpath is just a first cut that was never completed.  If you are
> working on an XPath data model for SCXML, you should define the data
> structures as you see fit and produce your own XSLT transformations.
>
> - Jim
> On 5/1/2016 5:02 PM, Jon Kerny wrote:
>
> Hi,
>
> I've been looking at test354.txml
> <https://www.w3.org/Voice/2013/scxml-irp/354/test354.txml> in the scxml
> irp. For xpath it makes use of a template implemented like this:
>
> <xsl:template match="//@conf:eventDataNamelistValue">
> <xsl:attribute name="expr">
> $_event/data/data[@id='Var
> <xsl:value-of select="."/>
> ']/data/text()
> </xsl:attribute>
> </xsl:template>
>
> It creates an expression like this:
>
> expr="$_event/data/data[@id='Var1']/data/text()"
>
> I don't understand why there should be three levels of data?
>
> The first is from event, ok.
> The second is from 2.7.1 in the xpath specification, ok
>
> But why is there a third data element?
>
> Why isn't a template below used?
>
> <xsl:template match="//@conf:eventDataNamelistValue">
> <xsl:attribute name="expr">
> $_event/data/data[@id='Var
> <xsl:value-of select="."/>
> ']/text()
> </xsl:attribute>
> </xsl:template>
>
> Where in the specifications does it say that there should be a
> event/data/data[@id='']/data/ structure when using xpath?
>
> For ecmascript the template looks like:
>
> <xsl:template match="//@conf:eventDataNamelistValue">
> <xsl:attribute name="expr">
> _event.data.Var
> <xsl:value-of select="."/>
> </xsl:attribute>
> </xsl:template>
>
> I cannot understand why there is a difference.
>
> Best regards,
>
> Jon
>
>
>
>
Received on Wednesday, 4 May 2016 19:55:19 UTC

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