Hi,
I'm putting out this request to the community at large to see if
there are ideas that I'm unaware of. I have a fairly large database of
roughly 1.5 million triples. It is populated with many sets of roughly 450
triples which share the same namespace. Many of my operations involve
retrieving one of those sets of triples, but I'm finding it takes about 7
seconds to execute on TBL, installed on a 16GB AWS instance. Here is the
SPARQL query I'm using to get a set of triples:
PREFIX afn: <http://jena.hpl.hp.com/ARQ/function#>
SELECT ?s ?p ?o
WHERE {
GRAPH <http://mygraph> {
?s ?p ?o .
FILTER (afn:namespace(?s) = "http://mynamespace#";) .
}}
Is there some clever way to pull just the triples in a single namespace that
doesn't involve using ?s ?p ?o followed by a FILTER?
Brilliant ideas welcome!
- Steve
Steven R. Ray, Ph.D.
Distinguished Research Fellow
Carnegie Mellon University
NASA Research Park
Building 23 (MS 23-11)
P.O. Box 1
Moffett Field, CA 94305-0001
Email: [email protected]
Phone: (650) 587-3780
Cell: (202) 316-6481
Skype: steverayconsulting
cid:[email protected]
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