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Re: Correcting unbound namespace prefixes

Subject: Re: Correcting unbound namespace prefixes
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Date: Mon, 02 Aug 2010 12:26:40 -0400
Re:  Correcting unbound namespace prefixes
I forgot to mention that make_parser() comes from importing "xml.sax", and "handler" is an instance of a class derived from importing "xml.sax.handler" that intercepts the start of element event while recreating the output, injecting your required namespace declarations.

But, really, I should have told you this on XML Dev.

. . . . . . . . . Ken

At 2010-08-02 12:22 -0400, I wrote:
At 2010-08-02 09:08 -0700, Tony Nassar wrote:
I'm not sure this is the correct place to post.

It isn't, because it isn't related to XSLT or XSL-FO. I'm not the moderator, but the moderator is very busy this week running the Balisage conference with her colleagues.

Post your to the OASIS XML-Dev list where people can help you regarding such questions.

Personally, since you mention Python and I am a fan of Python, I would try to run this as follows (though I haven't tested it):

parser = make_parser()
parser.setFeature( "http://xml.org/sax/features/namespaces", False )
parser.setContentHandler( handler )
parser.parse( fileIn )

.... where "handler" find elements that have a prefix and makes assumptions about the namespaces required for those prefixes.

I hope this helps.

. . . . . . . . . . . Ken

This may be a question about JAXP, or simply about good standard operating procedure for bad input data.

I've got some XML that I know is invalid, but I'm not in a position to get the customer to fix it. Here's what it looks like:

   <text>Four score and twenty years ago..,</text>
   <pp:metadata publication-date="2010-07-31T12:30:00Z" />

You get the idea (I hope): clearly someone began with XML in the "" namespace, extracted metadata in a post-processing step, and inserted the corresponding markup without adding the necessary namespace declarations or mapping "pp" to one. I don't know of a way to fix this through the JAXP API (i.e. interpolating the prefix mapping). Or am I better off just preprocessing this XML via Perl or Python before it's ever parsed?

Tony Nassar Ph.D. Palantir Technologies | Forward Deployed Engineer

XSLT/XQuery training:   after http://XMLPrague.cz 2011-03-28/04-01
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G. Ken Holman                 mailto:gkholman@xxxxxxxxxxxxxxxxxxxx
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