[JENA-1729] A minor initilization issue

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: Jena 4.1.0
• Component/s: Core

Environment

java8(1.8.0_152), jena-arq:3.12.0

• Assignee: Andy Seaborne
• Reporter: ssz
• Created: 07/Jul/19 13:58
• Updated: 04/Jun/21 12:53
• Resolved: 28/Apr/21 15:11

Description

The following one-class program fails with assertion error:

 

package xx.yy;

import org.apache.jena.rdf.model.RDFNode;
import org.apache.jena.rdf.model.ResourceFactory;
import org.apache.jena.sys.JenaSubsystemLifecycle;
import org.apache.jena.sys.JenaSystem;
import org.apache.jena.vocabulary.RDF;

public class InitTest implements JenaSubsystemLifecycle {
    @Override
    public void start() {
        if (JenaSystem.DEBUG_INIT)
            System.err.println("InitTEST -- start");
        assert RDF.type != null : "RDF#type is null => attempt to load a graph here will fail";
    }

    @Override
    public void stop() {
        if (JenaSystem.DEBUG_INIT)
            System.err.println("InitTEST -- finish");
    }

    @Override
    public int level() {
        return 500;
    }

    public static void main(String... args) { // run VM option: -ea
        JenaSystem.DEBUG_INIT = true;
        //RDFNode r = ResourceFactory.createProperty("X"); // this works fine
        RDFNode r = ResourceFactory.createTypedLiteral("Y"); // this causes a problem
        System.out.println(r);
    }
}