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Re: Talked to the xml.gov people

From: Norman Walsh <Norman.Walsh@Sun.COM>
Date: Tue, 27 May 2003 12:43:23 -0400
To: www-tag@w3.org
Message-ID: <87fzn05oic.fsf@nwalsh.com>

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/ Paul Prescod <paul@prescod.net> was heard to say:
| Fair enough. Note that you could also dereference an HTTP URL using a
| catalog or registry. For instance, Google's archive is a nice catalog
| that gives you alternate (historical) representations of HTTP URLs.
| And SGML SOCATs explicitly allow mapping from system identifiers to
| system identifiers.
|
| "The SYSTEM keyword indicates that an entity manager should use the
| associated storage object identifier to locate the replacement text
| for an entity whose external identifier's system identifier is
| explicitly specified by the system identifier."
|
| So it isn't just theoretically possible, it is implemented in nsgmls,
| jade and other SP-based tools.

FYI: XML Catalogs[1] provide this functionality as well. They're
implemented in XML Commons at Apache (meaning: in essentially any
reasonable Java parser) and in libxml (and other places).

                                        Be seeing you,
                                          norm

[1] http://www.oasis-open.org/committees/entity/

- -- 
Norman.Walsh@Sun.COM    | During the first period of a man's life the
XML Standards Architect | greatest danger is: .--Kierkegaard
Web Tech. and Standards |
Sun Microsystems, Inc.  | 
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Received on Tuesday, 27 May 2003 12:44:32 UTC

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