Re: ErrorHandler questions

On Fri, 07 Jan 2005 11:32:10 -0500, Karl Waclawek <[email protected]> wrote:
 
> 1) Is it legal for an application's content handler to
>     call-back on the error handler?

That is an excellent question, and one that I had never considered.  I
suppose that it is allowed, since it's not explicitly forbidden, but
it does make a bit of a mash of encapsulation (the content handler is
forced to hold or be able to obtain a reference to the error handler).
 Also, it is possible that many existing SAX apps assume that only
XML-related errors come through ErrorHandler.

> 2) Related to previous ContentHandler message:
>     If a SAX event stream can be legally generated from other sources
>     than parsing an actual XML document, is then the definition of
>     the SAXParseException as argument for ErrorHandler call-backs
>     not a little narrow?

That falls out from the first one.  If ErrorHandler is only for XML
parsing errors, then presumably there's no problem; if you start using
it for application errors, things get trickier.

Given that additional point, it looks like using ErrorHandler for
application errors isn't such a hot idea, but I don't have any real
experience with that.  Has anyone else played around in this area?


All the best,


David

-- 
http://www.megginson.com/


-------------------------------------------------------
The SF.Net email is sponsored by: Beat the post-holiday blues
Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
_______________________________________________
List: sax-devel, [email protected]
See:  http://www.saxproject.org/
https://lists.sourceforge.net/lists/listinfo/sax-devel