Re: Identity of Documents Puzzle

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Subject: Re: Identity of Documents Puzzle
From: "W. Eliot Kimber" <eliot@xxxxxxxxxx>
Date: Sat, 07 Dec 2002 08:08:36 -0600

David Carlisle wrote:

can't you compare
generate-id(document('filename'),/)
and
generate-id(document(''),/)


I think they should be the same if 'filename' is the input doc,
shouldn't they?

Unfortunately no--'document("")' returns the root node of the stylesheet, not the input document.

However, in re-reading the definition of document() just now, I did notice that document() should return nodes referenced by fragment identifiers (I had assumed it always returned document nodes, ignoring any fragment identifiers). I hadn't realized that before. That suggests that XSLT processors should provide hooks to extend their fragment identifier resolution features, but I don't remember seeing any such hooks for any of the XSLT processors I've worked with (Xalan, Saxon, XSLTC, etc.). For example, I have implemented my own XSLT extension functions to resolve XPointers (see Dave Pawson's XSL FAQ), but it would be more efficient to implement XPointer processing in the XSLT engine (and easier to do a complete job of it in Java or C or Python than in XSLT). Hmmm.

In the context of XInclude, the XInclude spec specifies that fragment identifiers are XPointers but I don't believe Saxon 6.5, for example, implements XPointer resolution, so I'm still required to implement it myself. Looks like I need to dig into a little source code here and there. Something to do on the plane to Baltimore....

Cheers,

E.
--
W. Eliot Kimber, eliot@xxxxxxxxxx
Consultant, ISOGEN International

1016 La Posada Dr., Suite 240
Austin, TX  78752 Phone: 512.656.4139

XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list

Current Thread

Identity of Documents Puzzle
- W. Eliot Kimber - Fri, 6 Dec 2002 19:02:20 -0500 (EST)
  - G. Ken Holman - Fri, 6 Dec 2002 20:48:43 -0500 (EST)
    - W. Eliot Kimber - Fri, 6 Dec 2002 22:11:56 -0500 (EST)
    - David Carlisle - Sat, 7 Dec 2002 08:16:17 -0500 (EST)
      - W. Eliot Kimber - Sat, 7 Dec 2002 09:02:30 -0500 (EST) <=
      - David Rosenborg - Sat, 7 Dec 2002 11:12:47 -0500 (EST)
      - W. Eliot Kimber - Sat, 7 Dec 2002 17:24:49 -0500 (EST)
      - David Carlisle - Sat, 7 Dec 2002 19:08:10 -0500 (EST)
      - G. Ken Holman - Sat, 7 Dec 2002 20:33:50 -0500 (EST)

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Re: Identity of Documents Puz, David Carlisle	Thread	Re: Identity of Documents Puz, David Rosenborg
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