[tmql-wg] TMQL, next round
rho at bigpond.net.au
Fri Mar 9 04:12:50 EST 2007
On Thu, Mar 08, 2007 at 02:56:32PM +0100, Lars Heuer wrote:
> Hi Robert,
> Do you mind to open a new thread for every issue? It would help (at
> least me) to keep the overview. :)
> > TMQL Issue: Error compatibility
> > At the moment, the TMQL standard does not detail the errors which
> > can occur during the static/dynamic analysis; and it also does not
> > give the errorenous situations a name.
> > Structured Discussion
> > ? Should the TMQL standard name all error situations
> > + higher compatibility between TMQL implementation
> > - less freedom for implementors
> I like the idea of standard errors. At least some error codes should
> be part of the standard (like SQL and XQuery do). I don't think that
> it cuts the freedom for impl. significantly.
I just looked up how it works in XQuery and they distinguish between
- static errors (analysis of query), and
- evaluation errors
And then they break it down into subclasses and have given each
individual error a QName. They have also a lengthy coverage how error
(classes) may affect optimization.
So this looks quite substantial to me.
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