[tbc-users] Re: SPARQL Queries over several imports
Joseph; One issue you should be aware of is qnames vs. URIs. The
:hasProperty below is a qname for a resource in your default
namespace. To see the full URI for hasProperty, open the property in
Composer and go toggle between Name and URI.
Given that, when you import files, a namespace prefix will be created
for you. Let's say you have main.n3 that imports abc.owl. Open
main.n3 and go to the ontology home. Find the namespace prefix for
the imported abc.owl file. The prefix might be named abc, in which
case you can use the qname abc:hasProperty.
Each import that has a different base URI will be assigned a unique
namespace prefix.
-- Scott
On Mar 31, 2:27 pm, Joseph Shea joseph.p.s...@gmail.com wrote:
Hello. I am running a problem when I try to query an owl file with
several other owl files imported into it. I need it to go through the
main file, as well as all of the imports, but am unfamiliar with the
syntax for it. An example would be.
SELECT ?subject ?object
WHERE {
?subject :hasProperty ?object .
}
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[tbc-users] Re: SPARQL Queries over several imports
Whenever you run a SPARQL query in TBC, and give neither FROM nor
GRAPH clauses, the system will run the query over the whole graph,
including the imports. You can narrow down querying against the base
graph only using a button in the SPARQL view, or using the GRAPH
keyword. But apart from that, it should already work and operate on
all imports automatically.
Holger
On Mar 31, 2009, at 12:27 PM, Joseph Shea wrote:
Hello. I am running a problem when I try to query an owl file with
several other owl files imported into it. I need it to go through the
main file, as well as all of the imports, but am unfamiliar with the
syntax for it. An example would be.
SELECT ?subject ?object
WHERE {
?subject :hasProperty ?object .
}
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To post to this group, send email to topbraid-composer-users@googlegroups.com
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