Fuseki how to add Pellet reasoner

Question

I want to use pellet reasoner with my Fuseki 2.3.1

First: I added Pellet reasoner to my config.ttl as this:

ja:reasoner
        [ ja:reasonerClass
           


        

Answer 1

Solution: Use openllet instead. Just change to ja:reasonerClass "openllet.jena.PelletReasonerFactory" in the config file, and download the openllet distribution and other jar files needed to the classpath.

Explanation:The error

expected class org.apache.jena.reasoner.ReasonerFactory, but had class org.mindswap.pellet.jena.PelletReasonerFactory

is caused by that the pellet's org.mindswap.pellet.jena.PelletReasonerFactory implements the old interface (com.hp.hpl.jena.reasoner.ReasonerFactory) which is different from the interface used in Fuseki (org.apache.jena.reasoner.ReasonerFactory).

The openllet's openllet.jena.PelletReasonerFactory implements the correct interface (org.apache.jena.reasoner.ReasonerFactory).

Check their source code:

openllet's PelletReasonerFactory.java

pellet's PelletReasonerFactory.java