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   Re: SAX: New Idea for Entity Resolution

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  • From: David Megginson <ak117@freenet.carleton.ca>
  • To: xml-dev@ic.ac.uk
  • Date: Wed, 15 Apr 1998 20:59:03 -0400

Alex Milowski writes:

 > In effect, although the above interface is useful, it reduces
 > interchange in that I can make a document with broken system
 > identifiers work on my system.  Essentially, I can make an
 > *invalid* document valid!

You can do this in any case, though -- you can intercept URIs in the
system libraries (Java, for example, lets you register your own
schemes), or you can redirect them with a proxy server.

With URLs, file:// will almost always break on exchange, as will http:
system identifiers that refer to hostnames visible only within a
private network.

Your other points (which I omitted above) are well taken -- public
identifiers are a bit of a muddle right now, but since they're in XML
1.0, it makes sense to support them.  The interface is not only for
public identifiers, however -- users can also remote URIs to
local/secure equivalents, and they can even screen out certain URIs if
necessary.  I'd better copyright "XML-Nanny" before someone else
thinks of it.

All the best,


David Megginson                 ak117@freenet.carleton.ca
Microstar Software Ltd.         dmeggins@microstar.com

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