On Aug 23, 2005, at 5:06 PM, Michel Pelletier wrote
On Tue, 2005-08-23 at 16:26 -0400, Tres Seaver wrote:
They are know, but they are an *infeasible* join key (not only are
they
strings, but as arbitrary-length strings with common prefixes, their
sorting semantics are almost worst-case for many join algorithms.)
Right, perhaps a good compromise is a URI utility which maps the
URIs to
efficient join keys. That adds a double layer of mapping, but for now
that might be an easy choice to make to give us time to think about
exposing a primary key.
I'd like something better. :-)
The relationship between ZODB content objects, their int id as
provided by the pertinent intid utility, and a (theoretical)
corresponding RDF URI is what I'm having a hard time not making hacky
in my mind. I'll think about it some more.
Another difficulty is that I like the RDF data model and the RDFLib
implementation, but I haven't found a compelling reason to care much
about the actual RDF format input and output. Is there a practically
compelling defense of RDF as a format somewhere to which you can
point me?
Gary
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