[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: SAX: Error Reporting (question 4 of 10)
>Tim Bray writes: > > > On this one, I agree with David and disagree with James. I don't > > see the advantages to using an exception. I think that a SAX processor > > should use fatal() (why the longer fatalError()?) - this has the > > advantage that you can, after the first message, go on looking for > > more fatal errors. Of course, a SAX processor must not, after the first > > fatal() callback, emit any more element() or charData() callbacks. > >The only problem here is that the element context could be useful for >error reporting (i.e. "Error in <name> in <address> in ><frontmatter>"). When XML documents are machine generated, this type >of an error message might be more useful than a line number. Obviously the consumer could be made responsible for maintaining an element and/or entity stack (cf. Jame's early message on this topic) without putting additional onus on the parser to hold this information. On the other hand, it might be worth considering using an XMLLocation class or suchlike to hold the line number and offset information for the calls which require this information, rather than passing them as separate parameters. This would enable "consenting" producer/consumer pairs to use a derived class (e.g. XMLFatalErrorLocation) containing additional information provided by the parser. It would also enable future extensions without changing the interface. Matthew ------------------------------------------------ Matthew Gertner Project Manager/Architect, Internet/Document Management POET Software GmbH Tel: +49 (40) 609 90254 Fax: +49 (40) 609 90115 E-mail: matthewg@p... ------------------------------------------------ xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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