Is XPATH the way to search a data model?
dsb at ast.man.ac.uk
Tue May 18 03:21:32 PDT 2004
> The registry provides the queryable terms.
I was not really thinking of registry searches so much as, say, searching
a specific Quantity.
> A translation service is
> needed between the query generation and the transmissions to each data
> center according to the data centers registered terms. The XPATH, as
> far as I am aware, is only used at the last stage of extracting info
> from the internal meta-database. So, yes we need a general model to
> allow such transformations service to be built. But, eventually you
> need a mechanism of getting info out of metadata stored or transmitted
> as XML, this is always XPATH based (ie XSL, XQUERY, XQL, etc are based
> on XPATH).
But once the XML has be de-serialised into an in-memory structure why not
use class methods which have intimate knowledge of the semantic meaning
of the class properties and can therefore do more intelligent decisions?
XML is just a dumb way of marking up text - why is it being seen as the
answer to all VO problems?
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