Re: Unparsed entities and public identifiers

[Paul Grosso <pgrosso@xxxxxxxxxxxxx>]

At 10:38 2000 07 17 +0100, Richard Light wrote:
>The XSLT Recommendation (Section 3.3, Unparsed Entities) contains the
>following phrase:
>
>"The XSLT processor may use the public identifier to generate a URI for
>the entity instead of the URI specified in the system identifier."
>
>Do any of the extant XSLT processors take advantage of this opportunity?  

It's relatively feasible (for a Java programmer) to add catalog support
to something like XT.  See below for more.

>One obvious approach would be a command-line option to specify an OASIS
>Catalog file, mapping public to system identifiers.  Public identifiers
>could be looked up in this file, with the system identifier being used
>(as it must) if no match is found for the public identifier.

I agree, which is why I've been pushing catalog support whenever I can.

As you mention, the obvious choice is the catalog support defined 
by the OASIS (née SGML Open) Entity Management Catalog Technical 
Resolution TR9401:1997 [1].  See Norm's article [2] for both a good 
description of the issues and for a pointer to some Java classes that 
implement both the TR9401:1997 catalogs and XML Catalogs [3].

paul

[1] http://www.oasis-open.org/html/a401.htm
[2]
http://www.arbortext.com/Think_Tank/Norm_s_Column/Issue_Three/issue_three.html
[3] http://www.ccil.org/~cowan/XML/XCatalog.html



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