SPARQL/Extensions/Lists
< SPARQL | Extensions
RDF lists are tough to query in standard SPARQL. In particular, there is no easy way to issue a simple query such as
Retrieve all members of ex:list
in order.
The DAWG postponed this issue in February, 2005.
Existing implemented approaches to this:
- ARQ supports list:member and rdfs:member (
list:member
is<http://www.jena.hpl.hp.com/ARQ/list#member>
) as computed properties that relates an RDF list (forlist:member
) or an RDF container (forrdfs:member
) to its member items. - cwm supports list:in (
<http://www.w3.org/2000/10/swap/list#>
) which relates an item to a list that contains it. (This is the inverse relation of ARQ'slist:member
.)