On Mon, 2005-11-28 at 14:27 +0000, Mike Taylor wrote:
> > Date: Mon, 28 Nov 2005 14:18:58 +0000
> > From: Rob Sanderson <[log in to unmask]>
> >
> >> Hence for indicators is seems likely that these would have to be
> >> handled by relational modifiers.
> > See also the discussion on the ZeeRex context set concerning
> > searching for attributes with an attribute set.
> 
> Hands up everyone who's actually implemented prox/unit=element/distance=0?
> Thought so.
> I stuff support Matthew's relation-modifier approach.

I propose that we allow full XML structural searching by nested relation
modifiers. You simply quote each sucessive subquery in the relation
modifier's value, and escape quotes as necessary.

element =/subQuery="content =/element={dcnamespace}:title \"fish
\"" {srwdcnamespace}:record

Hooray for progress.

I put the above suggestions (both mine and Matthew's) into the same
basket with the following valid CQL query:

> any > any = exact any > any


Rob

-- 
Dr Robert Sanderson
Dept of Computer Science, University of Liverpool
Home:     http://www.csc.liv.ac.uk/~azaroth/
Cheshire: http://www.cheshire3.org/