Good morning all,
Perhaps a simple question here, but something that has been throwing us for a
loop. Is it possible to use inverse predicates for RDF queries?
For example, in our relatively early stages of implementing Fedora Commons we
have primarily used RDF relationships such as "isMemberOfCollection",
"isMemberOf", and "hasContentModel". These have been incredibly powerful to
work with, and served us well so far. But as we dig into developing front-ends
for managing objects and discovery layers, we are interested in leveraging RDF
queries as much as possible. Is it possible to use predicates such as,
"hasMember" or "hasMemberOfCollection"? And if it is not baked into FC, is it
possible to define these inverse relationships in such a way that we can query
using them? It looks like in some of the Spring XACML configurations there are
hints of this.
I've also seen some chatter in RDF discussions about whether or not to include
this kind of inverse predicate logic, vs. adding triples that explicitly state
those relationships, but am not sure if FC provides this functionality. Plus,
we have been meaning to start utilizing this listserv more, and this seemed
like a good time to start; it has already been of immense help to us, thanks to
everyone for making their questions and answers available to the community.
-Graham
Graham Hukill
Digital Publishing Librarian
Wayne State University Libraries
313.577.5951
[email protected]
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