Loading Drools/KIE Workbench artifacts directly from the repository

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北海茫月
北海茫月 2020-12-02 16:14

We try to switch to Drools 6 with the all new KIE workbench (formerly known as Guvnor) and the new maven-based artifacts.

Now I\'d like to use the the system describ

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  •  悲&欢浪女
    2020-12-02 16:53

    I finally managed to get this solved. Below is a working example which loads the Drools artifact from the KIE-repository via HTTP and executes the rules:

    package kieTest;
    
    import java.util.Scanner;
    
    import org.drools.compiler.kproject.ReleaseIdImpl;
    import org.kie.api.KieServices;
    import org.kie.api.builder.KieScanner;
    import org.kie.api.runtime.KieContainer;
    import org.kie.api.runtime.StatelessKieSession;
    
    public class MainKieTest {
    
        public static void main(String[] args) {
    
            // works even without -SNAPSHOT versions
            String url = "http://localhost:8080/kie-drools/maven2/de/test/Test/1.2.3/Test-1.2.3.jar";
    
            // make sure you use "LATEST" here!
            ReleaseIdImpl releaseId = new ReleaseIdImpl("de.test", "Test", "LATEST");
    
            KieServices ks = KieServices.Factory.get();
    
            ks.getResources().newUrlResource(url);
    
            KieContainer kieContainer = ks.newKieContainer(releaseId);
    
            // check every 5 seconds if there is a new version at the URL
            KieScanner kieScanner = ks.newKieScanner(kieContainer);
            kieScanner.start(5000L);
            // alternatively:
            // kieScanner.scanNow();
    
            Scanner scanner = new Scanner(System.in);
            while (true) {
                runRule(kieContainer);
                System.out.println("Press enter in order to run the test again....");
                scanner.nextLine();
            }
        }
    
        private static void runRule(KieContainer kieKontainer) {
            StatelessKieSession kSession = kieKontainer.newStatelessKieSession("testSession");
            kSession.setGlobal("out", System.out);
            kSession.execute("testRuleAgain");
        }
    }
    

    When searching for the solution, I found the following link helpful:

    • http://blog.athico.com/2013/12/deployment-with-drools-60.html

    I hope someone finds this useful when getting SO as first search result ;-)

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