RE: [xsl] Calling subdocuments with processing directives

["Michael Kay" <mike@xxxxxxxxxxxx>]

> I have a question concerning the use of fn:document in XSL 
> 2.0 using Saxon 8
> 
> I have an xml document with an xsl style sheet processing 
> directive that calls a working style sheet. What I thought I 
> could do to embellish the document under certain 
> circumstances is include this document from another document 
> by specifying an extension attribute that uses fn:document to 
> include the subdocument. The embellishment simply sets up a 
> key that, if it had been defined in the subdocument, would be 
> generated perfectly well. (This is rather like extending a 
> base class in OOP).
> 
> What happens is that the subdocument is generated as expected 
> but the key has not been passed.

I'm really quite confused by what you are doing here.

First point: when you load a document using the document() function, Saxon
will always ignore any <?xml-stylesheet?> processing instruction in that
document.

Second point: I really don't know what you are doing with this key
definition. You say it's in a file called "form.xml", was that meant to be
"form.xsl"? If the key definition is in the stylesheet that is controlling
your processing, then it can be used with any document that participates in
the transformation, you don't need to do anything special to say which
documents it applies to.

I won't ask you how the poem continues. Alright, I will.

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

The boy stood on the burning deck
His heart was all a-quiver.
He gave a cough, his leg fell off
and floated down the river.

> 
> So the issue, I suspected, is that the processing directive 
> in the subdocument (that in fact calls the same style sheet) 
> reinitializes either the key or the style sheet processor. 
> This implies that the question I should ask is: can I include 
> a document that I want to parse and ask the style sheet 
> processor to ignore any processing directives? So obviously I 
> removed the processing directive but it made no difference.
> 
> So we have something like this:
> == top.xml ==
> <?xml-stylesheet type="text/xsl"href="oxygen:/eXist$memeio-exist/db/
> memeio/xml/form.xsl"?>
> <document extends="document.xml">
> <embellishment type="sidebar">
> <p>The boy stood on the burning deck ...</p> </embellishment> 
> </document>
> 
> == document.xml ==
> <?xml-stylesheet type="text/xsl"href="oxygen:/eXist$memeio-exist/db/
> memeio/xml/form.xsl"?>
> <document>
> <embellishment type="overlay">
> <p>... picking his nose like mad.</p>
> </embellishment>
> <!-- the xml that defines the document -->
> 
> </document>
> 
> == form.xml includes:
> <xsl:key match="embellishment" name="embellishment" use="@type"/>
> 
> and, of course, it knows what to do with these keys as the 
> document is generated. This all works for the non-extended case.
> 
> I know that there are other ways to do this and different 
> ways to structure the document but I am looking for a simple 
> way to extend existing documents in the current style sheet structure.
> 
> Thanks,
> Steven
> 
> 
> --
> Dr. Steven Ericsson-Zenith
> Institute for Advanced Science & Engineering http://iase.info 
> http://senses.info