python (65.2k questions)

javascript (44.3k questions)

reactjs (22.7k questions)

java (20.8k questions)

c# (17.4k questions)

html (16.3k questions)

r (13.7k questions)

android (13k questions)

Questions - jena

Query Relevance Rewriting in Ontology

I was wondering is there a way/work that focuses only on those axioms that are needed to answer the query and based on this rewrite the query, instead of finding the whole TBox closure? Mostly the wor...
test-img

Qureshi

jena

ontology

owl-api

Votes: 0

Answers: 0

Apache jena: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder"

When I run the example from the docs(https://jena.apache.org/documentation/ontology/): I get following error: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulti...
test-img

J. Doe

java

maven

jena

Votes: 0

Answers: 1

Latest Answer

You need to add a logging implementation to your application. apache-jena-libs is a library; it uses slf4j as an API to abstract way from the choice of logging. Example: <dependency> &...
test-img

AndyS

Jena Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.9.0:compile (default-compile) on project jena-iri: Fatal error compiling

I try to use Apache Jena with eclipse on my machine. I'm following the official documentation: https://jena.apache.org/tutorials/using_jena_with_eclipse.html Which links to https://jena.apache.org/get...
test-img

J. Doe

java

maven

jena

Votes: 0

Answers: 0

LiteralImpl cannot be cast to class Resource (LiteralImpl and Resource are in unnamed module of loader &#39;app&#39; (Jena)

I'm creating a web app (spring + react) that will query an endpoint (selected by the user) with a certain query. For the purposes of this app I'm using jena. This is the method where I use jena: @Over...
test-img

jana

java

spring

sparql

jena

Votes: 0

Answers: 1

Latest Answer

Resource subject = qs.getResource(subjectString) A resource is a URI or a blank node, and is not a literal. The query results include a literal (e.g. string). Class RDFNode is the Jena class of all R...
test-img

AndyS

Posts

Questions

Blogs

Jobs