> My point should have been that it will be easier to nip ongoing
> discussions about supported features in the bud if there is an
> "officially" stated intention to provide an advanced interface as
> well. I would like to sit down and write down some of our
> requirements for a "repository loader" interface (no doubt very
> similar to a DOM builder), but I see the danger of losing focus at
> this point. I remember the date January 12th floating around as the
> deadline for some concrete SAX implementations. Would this be an
> appropriate time to make some more detailed comments about an
> extended interface?
The new architecture that I proposed yesterday would make this very
simple. I proposed that we have three different Java interfaces for
call-backs (I can now supply package names as well):
org.xml.sax.EntityHandler
org.xml.sax.DocumentHandler
org.xml.sax.ErrorHandler
There are setters for all of these in the parser interface,
org.xml.sax.Parser:
package org.xml.sax;
public interface Parser {
public void setEntityHandler (EntityHandler handler);
public void setDocumentHandler (DocumentHandler handler);
public void setErrorHandler (ErrorHandler handler);
public void parse (String publicID, String systemID) throws Exception;
}
To create an interface that delivers more information, we could simply
define a new interface, say, org.xml.FancyHandler, and then extend
the Parser interface:
package org.xml.sax;
public interface FancyParser extends Parser {
public void setFancyHandler (FancyHandler handler);
}
I see no reason that we cannot turn our attention to this issue once
the current SAX is implemented and relatively stable -- at least, we
have not shut the door to future enhancement.
All the best,
David
--
David Megginson ak117@freenet.carleton.ca
Microstar Software Ltd. dmeggins@microstar.com
http://home.sprynet.com/sprynet/dmeggins/
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