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RE: [xsl] How can one get the name of a template or function?

2009-02-11 11:57:49
If you're prepared to grovel around the depths of Saxon internals, you can
write an extension function 


public static String getTemplateName(net.sf.saxon.expr XPathContext context)
{
    try {
       return context.getOrigin().getObjectName().getDisplayName();
    } catch (Exception err) {
       return null;
    }
}

and call it without any arguments as xx:getTemplateName(). Not tested. It
will only give the template name if it was invoked using call-template.
Should probably work for function calls as well.

Michael Kay
http://www.saxonica.com/

-----Original Message-----
From: Houghton,Andrew [mailto:houghtoa(_at_)oclc(_dot_)org] 
Sent: 11 February 2009 16:21
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] How can one get the name of a template or function?

I'm using Saxon as an XSL transform processor.  So I don't 
mind whether the answer is specific to Saxon or is general to 
all XSL transform processors.  What I would like to do is to 
get the name of the current template or function that is 
currently executing.  I realize that templates don't need to 
be named, but in my case they will be named since I'm using 
xsl:call-template on them.  So for example I would like to do 
something like:

<xsl:template name="foo" as="item()*">
  <xsl:variable name="my-name" as="xsd:string" 
select="get-name()" /> </xsl:template>

<xsl:function name="bar" as="item()*">
  <xsl:variable name="my-name" as="xsd:string" 
select="get-name()" /> </xsl:function>

Where get-name() is some sort of function that will give me 
the name of the template or function.  I don't really care if 
it's a function or a template that I have to call to get this 
information.  When looking over the list of XPath function I 
don't see anything useful and I didn't see anything in 
Saxon's extensions.  So my question is can this be done somehow?

BTW, I realize that I could do:

<xsl:template name="foo" as="item()*">
  <xsl:variable name="my-name" as="xsd:string" 
select="string('foo')" /> </xsl:template>

<xsl:function name="bar" as="item()*">
  <xsl:variable name="my-name" as="xsd:string" 
select="string('bar')" /> </xsl:function>

but I would prefer not to do that since when the name 
attribute changes, I need to keep the variable in sync too.


Thanks, Andy.



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