XOM API for Processing XML with Java

[Nils_Kilden-Pedersen AT Countrywide.Com]

xom-interest-bounces AT lists.ibiblio.org wrote on 01/08/2005 10:38:56 AM:

> On Jan 8, 2005, at 10:24 AM, Elliotte Harold wrote:
> 
> > We're going to need an exception class for things that go wrong when 
> > querying, ranging from syntactically incorrect queries to unexpected 
> > engine runtime exceptions. Anyone feel like arguing whether this 
> > exception should be checked or unchecked? I suspect the answer will 
> > eventually become obvious, but right now I can see arguments on both 
> > sides of the question.
> 
> I recommend making it checked. That way you could later still relax it 
> to unchecked if that should prove a very common case.

I would prefer the opposite. 
Generally, unchecked gives the developer a choice. 
Specifically, would anyone ever pass an XPath query they know might be 
invalid? (There may be a rare case, and if so, they can catch the 
exception).
And what am I supposed to do with unexpected engine runtime exceptions?

Nils
>From elharo AT metalab.unc.edu  Tue Jan 11 18:36:02 2005
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Nils_Kilden-Pedersen AT Countrywide.Com wrote:


> And what am I supposed to do with unexpected engine runtime exceptions?

I'm checking on this, but I think the only exception that should be 
thrown out of the query methods is XPathException. If I discover that 
the engine can throw runtime exceptions, I'll catch those too and 
convert them to XPathExceptions. I probably won't catch any errors, in 
the unlikely event of an OutOfMemoryError, StackOverflowError or some such.

-- 
Elliotte Rusty Harold  elharo AT metalab.unc.edu
XML in a Nutshell 3rd Edition Just Published!
http://www.cafeconleche.org/books/xian3/
http://www.amazon.com/exec/obidos/ISBN=0596007647/cafeaulaitA/ref=nosim