Hi Reto,
TcManager has only this method:
public Set<UriRef> getNames(Graph graph) {
return super.getNames(graph);
}
That works only on graphs, not on triple collections. Moreover, this
method delegates names retrieval to WeightedTcProvider.getNames(Graph
graph), which isn't implemented in a lot of concrete classes or isn't
efficient like in org.apache.clerezza.rdf.jena.tdb.storage.TdbTcProvider.
For the identity criterion, I think you can just skip the name field
when checking for identity, keeping the current comparison algorithm and
you can just add another equalsWithName() method that makes also a name
check, if someone needs it.
Regards,
Giuseppe
Il 19/04/2013 06:31, Reto Bachmann-Gmür ha scritto:
Hi Giuseppe
Hasan knows more abut the Sparql related parts.
Adding a name to the graph (subclass of TripleCollection) interface if
problematic as it would seem to affect the identity criterion. The RDF
Abstract Syntax and Semantics define the concept of graphs and specify when
they are identical the Clerezza API tries to stick to this.
However TcManager provided method to return the name(s) of
TripleCollection. Isn't this good enough?
Cheers,
Reto
On Thu, Apr 18, 2013 at 11:40 AM, Giuseppe Miscione <
[email protected]> wrote:
Hi all,
I'm developing an enhanced SparqlEngine that allows to use Jena LARQL
extension to make full text queries inside sparql.
LARQL requires that a Lucene index is created for the graph on which the
full text query is executed and I'm storing these indexes in folders whose
name is the same name of the corresponding Clerezza graph.
Currently, SparqlEngine.execute method receives only a TripleCollection,
which isn't aware of the name with which it has been loaded by the
TcManager and so I can't easily figure out which is the Lucene index that I
have to bind to Jena query execution context to make LARQL work properly.
What do you think of adding a pair of getName() and setName(String name)
methods to the TripleCollection interface so that the TcManager can bind
the name used to load the triples to the collection?
Regards,
Giuseppe
