Ticket #114 (closed task: fixed)

Opened 7 months ago

Last modified 2 months ago

DESCRIBE queries

Reported by: pag Assigned to: pag
Priority: major Milestone: SPARQL Query Engine
Component: Mulgara Version: 2.0-beta
Keywords: describe SPARQL Cc:

Description

DESCRIBE queries need to be implemented.

While this can just return a value of "Pink fluffy elephants", something more intelligent will be better.

I am thinking of taking the DESCRIBE variable ($d), and adding the following to the WHERE clause:
AND

(($d $predicate $value AND

$predicate <rdf:label> $property)

OR

($d $property $value MINUS

$property <rdf:label> $label))

AND
$value <rdf:type> <rdfs:Literal> in <sys:type>

This shows all literal properties, using labels for the predicate where possible, and URIs when not.

Change History

10/14/08 21:10:37 changed by pag

  • status changed from new to closed.
  • resolution set to fixed.

Feedback showed that most people just want property/value pairs for a subject. This was in release 2.0.0.