Re: Late binding

"Michael Kay" <mhk@mhk.me.uk> writes:

> I was looking again at the sentence in 4.2.1:
>
>  During schema construction, implementations must retain .QName. values for
> such references, in case an appropriately-named component becomes available
> to discharge the reference by the time it is actually needed
>
> It seems implementations have to retain much more than QName values to do
> late binding of schema components. For example, until you know the type of
> an element or attribute declaration you don't know whether its
> default/fixed/enumeration values are namespace-sensitive (QNames or
> notations), so you have to keep not only their lexical representation but
> also their entire namespace context! This part of the spec seems to leave an
> awful lot unsaid...

Yup.  Speaking only for myself, the true extent to which the
architecture of the REC requires lazy construction/late binding
emerged very late in the process, and its pervasive impact is not
well-documented in the spec.

ht
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 Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
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