Re: [xsl] EXSLT extension function

[Chris Loschen <closchen@xxxxxxxxxxxxxxxxxx>]

Hi Anton,

Thanks for your reply -- you'll have seen  my later message about what ended
up working (I called the function with incorrect syntax), but you raise some
issues here that I worked through as well. So in the spirit of 
knowledge-sharing,
here are the answers to your queries:

At 11:15 AM 7/31/2004, you wrote:
> Hi Chris,
>
> you did import the exslt date stylesheet, didn't you?
> (I don't see it in your fragment):
> <xsl:import href="date.xsl" />
>
> If you didn't, your stylesheet will know nothing about the named extension
> templates (in other words, you're calling templates that don't exist)

No, I didn't import the exslt stylesheet. It's already supported by the 
processor
I'm using (Xalan-J), so declaring the namespace is sufficient. Take a look at
the same web page you cite below for more details.


> But I suppose you did import it... Then take a look at your template calls:
>
>   <xsl:call-template name="date:hour-in-day"/>
>
> You are calling the template with no parameters! How can the template
> know what date/time you want to extract the hours of?

The default call with no parameters returns the current system time, which
is what I wanted here. You can call it as you did below (and as the example
on the web page is set up), but that would require a separate call to the
date-time function (to populate the variable $date-str below) which isn't
necessary because the function returns what I want already.


> You will need something like:
>
>   <xsl:call-template name="date:hour-in-day">
>     <xsl:with-param name="date-time" select="$date-str"/>
>   </xsl:call-template>
>
> If you want the current system time, you will need to call the
> appropriate function "date:date-time()".
>
> (see http://www.exslt.org/date/functions/date-time/index.html)
>
> HTH,
> Anton Triest

Hope that helps! Thanks again for your reply.


> ----- Original Message -----
> From: "Chris Loschen" <closchen@xxxxxxxxxxxxxxxxxx>
> To: <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
> Sent: Friday, July 30, 2004 10:24 PM
> Subject: [xsl] EXSLT extension function
>
>
> > Hi everybody!
> >
> > I'm trying to pull in the system time (I'll want the date as well, but one
> > thing at a time...)
> > to my XSLT stylesheet. It looked like the EXSLT functions had just what I
> > need, and
> > they're supposedly supported by my XSLT processor (Xalan-J 2.6). But I'm
> > getting this
> > error:
> >
> > javax.xml.transform.TransformerException: ElemTemplateElement error:
> > date:hour-in-day
> >
> > I might have the namespace wrong or perhaps I'm not calling the extension
> > function
> > correctly? I've done a Google search without finding anything. Anybody 
> have any
> > ideas? Thanks!
> >
> > Here is a fragment of the stylesheet (I know it's not well-formed -- I'm
> > just copying the relevant section):
> >
> > <?xml version="1.0"?>
> > <xsl:stylesheet version="1.0"
> >          xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> >          xmlns:date="http://exslt.org/dates-and-times";
> >          extension-element-prefixes="date">
> >
> > <xsl:output method="xml" version="1.0" omit-xml-declaration="yes"
> > indent="yes" />
> >
> > <xsl:template match="BillHeader">
> >          <xsl:variable name="time">
> >                  <xsl:variable name="hours">
> >                          <xsl:call-template name="date:hour-in-day"/>
> >                  </xsl:variable>
> >                  <xsl:variable name="minutes">
> >                          <xsl:call-template name="date:minute-in-hour"/>
> >                  </xsl:variable>
> >                  <xsl:value-of select="concat($hours,$minutes)"/>
> >          </xsl:variable>
> >
> > etc.
> >
> > Yours,
> >
> > Chris Loschen
> > closchen@xxxxxxxxxxxxxxxxxx
> > 781-718-3017 (cell)

Yours,

Chris Loschen
closchen@xxxxxxxxxxxxxxxxxx
781-718-3017 (cell)