OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.

 


Help: OASIS Mailing Lists Help | MarkMail Help

 


 

   Re: Announcement: SAX2 1999-06-01 alpha release for Java

[ Lists Home | Date Index | Thread Index ]
  • From: John Cowan <cowan@locke.ccil.org>
  • To: XML Dev <xml-dev@ic.ac.uk>
  • Date: Wed, 02 Jun 1999 11:38:56 -0400

David Megginson wrote:

> 1. Do we need a filter *interface* at all, or can a filter just be a
>    class that happens to implement Parser, Configurable,
>    EntityResolver, DTDHandler, DocumentHandler, and ErrorHandler?

Actually, a parser filter only *has* to implement Parser.  Whether
it implements the other things, or delegates their implementation
to private objects, is a detail.

>  (In
>    other words, is it enough to set the parent parser/filter in the
>    constructor?)

IMHO yes.  One could use reflection to determine whether there is
such a constructor, at least in the Java domain.
 
> 2. Actually, just last night I wrote an
>    org.xml.sax.helpers.FilterAdapter base class that filters can
>    easily be derived from (though they wouldn't have to be); by
>    default, it just lets all events sink down to the application,
>    and all configuration bubble up to the parser, but subclasses can
>    simply override methods to make changes in either direction.

I suggest you look at my P.D. code at
http://www.ccil.org/~cowan/XML/ParserFilter.java; it would be easy to
enhance it for SAX2, and it handles some subtle points.

-- 
John Cowan	http://www.ccil.org/~cowan		cowan@ccil.org
	You tollerday donsk?  N.  You tolkatiff scowegian?  Nn.
	You spigotty anglease?  Nnn.  You phonio saxo?  Nnnn.
		Clear all so!  'Tis a Jute.... (Finnegans Wake 16.5)



xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@ic.ac.uk
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1
To (un)subscribe, mailto:majordomo@ic.ac.uk the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo@ic.ac.uk the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@ic.ac.uk)






 

News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 2001 XML.org. This site is hosted by OASIS