[Versa] More on literal queries

[Uche Ogbuji]

On Tue, 2005-09-13 at 13:30 -0600, Michael Olson wrote:
> >> Just to be clear, your not talking about a "context" as shown in the
> >> above EBNF correct?  In the EBNF, context is the ".".  I've been  
> >> trying
> >> to talk about the "scope" of an expression which I think is what you
> >> mean.
> >
> > I should be explicit.  When I said context, I mainly meant the idea of
> > a subgraph (possibly named).  But there are three interpretations, as
> > I see it:
> >
> 
> So, lets try and give them names that are not so confusing.
> 
> > - Context:  A named subgraph In the pure RDF sense (the scope
> > attribute on 4RDF Statements)
> >
> 
> Scope.

Nah.  We'd be alone in this.

> > - Versa Context:  Consisting of a core data type, variable bindings,
> > namespace declarations, and a named Context (subgraph)
> >
> 
> Context.

I think this would be too confusing, which is why I suggested "query
state".

> > - The '.' Expression: Shorthand for the the data type instance
> > associated with the current Versa Context
> >
> 
> This can be "current" from the XPath spec.

Except that it's not current().  Remember that "." and "current()" are
quite different in XPath.  More confusion.


-- 
Uche Ogbuji                               Fourthought, Inc.
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