Re: [xsl] How to modify a RDF document and preserve the

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Subject: Re: [xsl] How to modify a RDF document and preserve the <!DOCTYPE rdf:RDF[ and entity references? From: Abel Braaksma <abel.online@xxxxxxxxx> Date: Sun, 06 Mar 2011 14:58:06 +0100

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The namespaces don't need to be declared on each element, but can be declared once on top of the document, this can be enforced in most cases. The reduction in size will then be marginal, if anything at all.

If you consider the smaller size hoping for faster processing, think again, because all entity references will be expanded by the XML parser prior to being fed to the XSLT processor anyway. However, in-memory, the size of an element won't grow by it having a (larger) namespace due to the way it is stored internally. Remember, a namespace is _not_ an attribute.

Kind regards,
Abel Braaksma

On 6-3-2011 14:44, Alex Muir wrote:

Hi,

Thanks for the replies. The enties are added I assume to reduce the
size of the document in this case.

I came across this post as well.
http://p2p.wrox.com/xslt/37057-preserving-entity-references.html

"The workaround people sometimes use is to edit the file before
transformation to replace all&  characters by, say, 6, and then edit
the pilcrows back to ampersands after the transformation." MK

So probably then I'll just write a xsl that used unparsed-text() and
analyze-string to do that work around and go from there.

Thanks Much Guys

On Sun, Mar 6, 2011 at 1:25 PM, Andrew Welch<andrew.j.welch@xxxxxxxxx> wrote:

The short answer is you can't as the information gets lost when the
xml is parsed.  There is an argument asking why you would want to -
why do you want to recreate the entity refs?  XML is much nicer when a
DTD isn't involved... :)

Either way, if you really have to recreate the entity refs then (in
Java) you can supply the XMLReader with your own LexicalHandler and
DeclHandler to capture the parse events and turn them into markup and
processing instructions to make the information available to your
transform.  This is what Lexev does (http://andrewjwelch.com/lexev/)
but it doesn't handle entity refs in attributes...  so its not much
use here.

On 6 March 2011 12:27, Alex Muir<alex.g.muir@xxxxxxxxx> wrote:

Hi,

What do I need to add to an xslt 2.0 stylesheet that modifies an RDF
file which has a doctype declaration with entity references. I'm not
certain how to preserve the DOCTYPE here exactly as shown and also
preserve the entity references such&wiki; within the document.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE rdf:RDF[
    <!ENTITY rdf 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'>
    <!ENTITY rdfs 'http://www.w3.org/2000/01/rdf-schema#'>
    <!ENTITY owl 'http://www.w3.org/2002/07/owl#'>
    <!ENTITY swivt 'http://semantic-mediawiki.org/swivt/1.0#'>
    <!ENTITY wiki 'http://p13.itawiki.org/wiki/Special:URIResolver/'>
    <!ENTITY property
'http://p13.itawiki.org/wiki/Special:URIResolver/Property-3A'>
    <!ENTITY wikiurl 'http://localhost/wiki/'>
]>

<rdf:RDF
    xmlns:rdf="&rdf;"
    xmlns:rdfs="&rdfs;"
    xmlns:owl ="&owl;"
    xmlns:swivt="&swivt;"
    xmlns:wiki="&wiki;"
    xmlns:property="&property;">

Currently this is being replaced
<property:Office rdf:resource="&wiki;BX"/>

as this in my xslt.
  <property:Office
rdf:resource="http://p13.itawiki.org/wiki/Special:URIResolver/BX"/>

I've been reading some old posts on this but I haven't been able to
key in on the right solution via google.

Regards
--
Alex
-----
Currently:
Freelance Software Engineer 6+ yrs exp

Previously:
https://sites.google.com/a/utg.edu.gm/alex/

A Bafila, is two rivers flowing together as one:
http://www.facebook.com/pages/Bafila/125611807494851

--
Andrew Welch
http://andrewjwelch.com

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Current Thread

[xsl] How to modify a RDF document and preserve the <!DOCTYPE rdf:RDF[ and entity references? Alex Muir - 6 Mar 2011 12:27:55 -0000 Andrew Welch - 6 Mar 2011 13:25:38 -0000 Alex Muir - 6 Mar 2011 13:44:13 -0000 Abel Braaksma - 6 Mar 2011 13:58:24 -0000 <= Alex Muir - 6 Mar 2011 14:10:11 -0000 Andrew Welch - 6 Mar 2011 14:14:06 -0000 Alex Muir - 6 Mar 2011 14:31:40 -0000 Tony Nassar - 13 Mar 2011 19:33:41 -0000

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