[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Parse Error Not Thrown When Expected
I'm sorry, i must not have explained the problem well enough. I realize that SAX is event based and I believe that the error HAS occured when it reaches the end of teh element in question (the "Add" element). I just assumed that the parser would perform the validation BEFORE it fires teh event, not after. If what John said is correct ("There is no model for when validity errors are guaranteed to be fired. A parser is free to fire them when it detects them, or even to save them up to the end of the document and fire them all at once. (Indeed, validity errors like undefined ID *can't* be detected until the end.)"), then I guess we'll just have to code around this. I assumed that, since SAX is event based, i could also code at an event based level. If i have to save up everything and commit to the database only at the end (b/c errors aren't thrown until then), then what is the point of using SAX (besides the fact that i can save my own objects, as opposed to dom objects)? -----Original Message----- From: Arnaud Le Hors [mailto:lehors@u...] Sent: Tuesday, May 16, 2000 1:05 PM To: xerces-j-dev@x... Cc: xml-dev@x... Subject: Re: Parse Error Not Thrown When Expected Laura Neitzel wrote: > > Can someone tell me why the Parser does not throw the exception BEFORE it > forwards the endElement (meaning that it never will throw the endElement)??? Because it hasn't encountered the error yet! SAX is event based, the parser passes the events to the application as they occur. There is nothing that can be changed on that front. The alternative would be to validate the document first and then start firing events. The application can do that, the parse can't (well, it could but this wouldn't be reasonable). Alternatively you can buffer the information returned by the parser and only process it once you considered it ok. Or if your document is small you could just use the DOMParser and use the DOM as your buffer. -- Arnaud Le Hors - IBM Cupertino, XML Technology Group *************************************************************************** This is xml-dev, the mailing list for XML developers. To unsubscribe, mailto:majordomo@x...&BODY=unsubscribe%20xml-dev List archives are available at http://xml.org/archives/xml-dev/ *************************************************************************** *************************************************************************** This is xml-dev, the mailing list for XML developers. To unsubscribe, mailto:majordomo@x...&BODY=unsubscribe%20xml-dev List archives are available at http://xml.org/archives/xml-dev/ ***************************************************************************
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