cowan at locke.ccil.org
Fri Nov 13 16:17:26 GMT 1998
david at megginson.com wrote:
> This is much easier to handle with a SAX filter that implements both
> Parser and DocumentHandler and buffers the character data.
Which someone using my ParserFilter class can write in < 1 day.
> In fact, a string of filters (Chain of Responsibility in
> Design-Pattern-speak) can give users an awful lot of control for very
> little work.
You betcha. And because each filter component can specified by a Java
system property, chaining can be done at run time very neatly.
The highest level filter is specified as org.xml.sax.parser, and
each lower level is specified by <successor class name>.parser, thus:
sets up a chain where SAXDriver (the real parser) passes
to tinker, which passes to evers, which passes to chance, :-) which
passes to the application.
Of course all this can be set up programmatically too.
> All of this can be done above the parser/driver level, so
> there's no need to complicate SAX by including it in the core spec
> itself (except for including a canonical Filter interface).
> Yes, but how do we accomplish this? Do we invent a new package name
> for SAX 1.0.1 to avoid collision?
I think that would be better than new class names.
John Cowan http://www.ccil.org/~cowan cowan at 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 at ic.ac.uk
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/
To (un)subscribe, mailto:majordomo at ic.ac.uk the following message;
To subscribe to the digests, mailto:majordomo at ic.ac.uk the following message;
List coordinator, Henry Rzepa (mailto:rzepa at ic.ac.uk)
More information about the Xml-dev