xml-dev - Re: URNs in SYSTEM declarations

[David Megginson <david@megginson.com>]

"Simon St.Laurent" <simonstl@simonstl.com> writes:

> URNs are an acceptable part of the URI spec, but XML processors may have no
> way to resolve them to actual resources.  What should a validating parser
> do when confronted by:
> 
> <!DOCTYPE myDoc SYSTEM "urn:itsSoObvious">

Send it to the SAX EntityResolver and pray that a usable InputSource
comes back (at least this is one thing that we did allow for in SAX
1.0).

Actually, URN resolution is a *really* good candidate for a SAX
filter: the filter can take the URN from the SAX parser, replace it
with a URL, and pass than on to the client application for (optional)
further processing before returning it to the parser.


All the best,


David

-- 
David Megginson                 david@megginson.com
           http://www.megginson.com/

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