A SPARQL-DLNOT engine
The engine executes SPARQL-DL^NOT queries as presented in [1].
[1] Petr Kremen & Bogdan Kostov, 2012. "Expressive OWL Queries: Design, Evaluation, Visualization," International Journal on Semantic Web and Information Systems (IJSWIS), IGI Global, vol. 8(4), pages 57-79, October.
OWL2Query is not hosted in Maven Central. Use the following repository instead:
<repository>
<id>kbss</id>
<name>KBSS Maven 2 Repository</name>
<url>https://kbss.felk.cvut.cz/m2repo</url>
</repository>
Then,
<dependency>
<groupId>cz.cvut.kbss</groupId>
<artifactId>owl2query-owlapi</artifactId>
<version>${cz.cvut.kbss.owl2query.version}</version>
</dependency>
imports the engine. However, for OWL2Query to work, an OWL API-compatible reasoner needs to be present as well. For example, using Openllet would require an additional dependency:
<dependencies>
<dependency>
<groupId>com.github.galigator.openllet</groupId>
<artifactId>openllet-owlapi</artifactId>
<version>${com.github.galigator.openllet.version}</version>
</dependency>
<dependency>
<groupId>com.github.galigator.openllet</groupId>
<artifactId>openllet-explanation</artifactId>
<version>${com.github.galigator.openllet.version}</version>
</dependency>
</dependencies>
LGPLv3
owl2query's People
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psiotwoowl2query's Issues
OWL2Query seems to ignore VALUES expression
When executing the following query:
SELECT ?x WHERE {
?x a <http://krizik.felk.cvut.cz/ontologies/jopa/entities#OWLClassA> .
}
VALUES (?x) {(<http://krizik.felk.cvut.cz/ontologies/jopa/tests/entityA_754>)}
the engine returns all instances of type http://krizik.felk.cvut.cz/ontologies/jopa/entities#OWLClassA
instead of just the one identified by the value provided in VALUES
.
From debugging, it seems that the internal representation (QueryImpl
) does not have any structure that could be mapped to a VALUES
expression and instead of throwing an exception (like for other unsupported SPARQL constructs), the VALUES
expression is silently ignored.
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