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


Help: OASIS Mailing Lists Help | MarkMail Help



   RE: ANN: SAX 2.0 extension proposals.

[ Lists Home | Date Index | Thread Index ]
  • From: Miles Sabin <msabin@cromwellmedia.co.uk>
  • To: xml-dev@xml.org
  • Date: Mon, 6 Mar 2000 20:08:11 -0000

David Brownell wrote,
> I want the "get the default parser" factory methods to permit 
> using environment-specific intelligence, rather than to 
> preclude it as you now do.  (I'm not sure what you mean by 
> "shadow".)
> That's "just" a specification change, not a syntax change.

Sure, but it's not easy to see how to turn that into code which
David can implement. I have no wish to see SAX2 specify the 
existence of a non-abstract method on a concrete class without 
specifying an implementation ... that way madness lies.

And there's really no need for it either. If you want something
_really_ lightweight, how about,

  public class XMLReaderFactory
    private static XMLReaderFactory theDefaultFactory =
      new XMLReaderFactory();

    public static synchronized XMLReader getInstance()
      throws SAXException
      return theDefaultFactory.createReader();

    public static synchronized void setDefaultReaderFactory
      (XMLReaderFactory factory)
      theDefaultFactory = factory;

    public createXMLReader()
      throws SAXException
      // create a reader using the org.xml.sax.parser
      // System property

Now you're free to extend XMLReaderFactory to use 'environment-
specific intelligence' and install an instance with the base

This might be a little _too_ lightweight for some peoples 
tastes (it certainly is for mine) ... I'd prefer at least an 
interface/implementation pair rather than a single concrete 
class ... but minimal is all we seem to have time for, 



Miles Sabin                       Cromwell Media
Internet Systems Architect        5/6 Glenthorne Mews
+44 (0)20 8817 4030               London, W6 0LJ, England
msabin@cromwellmedia.com          http://www.cromwellmedia.com/

This is xml-dev, the mailing list for XML developers.
To unsubscribe, mailto:majordomo@xml.org&BODY=unsubscribe%20xml-dev
List archives are available at http://xml.org/archives/xml-dev/


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

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