getting java.lang.NullPointerException at org.kie.scanner.Aether.newRepositorySystemSession

[sushma jagan Reddy]

I'm getting NullPointerException at KieContainer kieContainer = ks.newKieContainer(releaseId); I'm trying execute the rules of 6.4 workbench by downloading jar from workbench and trying to install from my api. This is my java class

      public class KieWb3 {
  public static void main(String[] args) {
           try{
    // works even without -SNAPSHOT versions
    String url =  "http://..../kie- drools/maven2wb/SampleDroolsWBTest/DroolsAPI/1.0/DroolsAPI-1.0.jar";

    // make sure you use "LATEST" here!
    ReleaseIdImpl releaseId = new ReleaseIdImpl("SampleDroolsWBTest", "DroolsAPI", "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();
    }
   }
   catch(Exception e){
System.out.println("exception occured");
e.printStackTrace();
  }
  }

private static void runRule(KieContainer kieKontainer) {
    StatelessKieSession kSession = kieKontainer.newStatelessKieSession("ksession1");
    kSession.setGlobal("out", System.out);
    kSession.execute("testRuleAgain");
}

Exception stackTrace

java.lang.NullPointerException
  at org.kie.scanner.Aether.newRepositorySystemSession(Aether.java:116)
  at org.kie.scanner.Aether.<init>(Aether.java:85)
at org.kie.scanner.Aether.<init>(Aether.java:62)
at org.kie.scanner.Aether.getAether(Aether.java:74)
at org.kie.scanner.MavenRepository.getMavenRepository(MavenRepository.java:80)
at org.kie.scanner.ArtifactResolver.<init>(ArtifactResolver.java:53)
at org.kie.scanner.KieRepositoryScannerImpl.getArtifactResolver(KieRepositoryScannerImpl.java:102)
at org.kie.scanner.KieRepositoryScannerImpl.loadArtifact(KieRepositoryScannerImpl.java:119)
at org.drools.compiler.kie.builder.impl.KieRepositoryImpl.loadKieModuleFromMavenRepo(KieRepositoryImpl.java:130)
at org.drools.compiler.kie.builder.impl.KieRepositoryImpl.getKieModule(KieRepositoryImpl.java:116)
at org.drools.compiler.kie.builder.impl.KieRepositoryImpl.getKieModule(KieRepositoryImpl.java:93)
at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieContainer(KieServicesImpl.java:115)
at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieContainer(KieServicesImpl.java:111)
at com.boa.rest.KieWb3.main(KieWb3.java:32)

Please help me in solving this issue..

[Abhijit Humbe]

Please confirm you have added kie-ci jar and its dependencies in classpath of the project

Abhijit Humbe

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[sushma jagan Reddy]

Hi Abhijit ,

Thanks for the reply.

Yes I have added and this issue got resolved but im stuck with a new issue now.

Getting below exception

java.lang.RuntimeException: org.kie.scanner.embedder.MavenEmbedderException: com.google.inject.ProvisionException: Unable to provision, see the following errors:

1) No implementation for org.apache.maven.repository.RepositorySystem was bound. while locating org.apache.maven.execution.DefaultMavenExecutionRequestPopulator at ClassRealm[maven, parent: ClassRealm[maven-parent, parent: null]] (via modules: org.eclipse.sisu.wire.WireModule -> org.eclipse.sisu.plexus.PlexusBindingModule) at ClassRealm[maven, parent: ClassRealm[maven-parent, parent: null]] (via modules: org.eclipse.sisu.wire.WireModule -> org.eclipse.sisu.plexus.PlexusBindingModule) while locating org.apache.maven.execution.MavenExecutionRequestPopulator

1 error role: org.apache.maven.execution.MavenExecutionRequestPopulator roleHint: at org.kie.scanner.embedder.MavenProjectLoader.newMavenEmbedder(MavenProjectLoader.java:69) at org.kie.scanner.embedder.MavenProjectLoader.parseMavenPom(MavenProjectLoader.java:53) at org.kie.scanner.embedder.MavenProjectLoader.parseMavenPom(MavenProjectLoader.java:49) at org.kie.scanner.ArtifactResolver.getResolverFor(ArtifactResolver.java:136) at org.kie.scanner.ArtifactResolver.getResolverFor(ArtifactResolver.java:99) at org.kie.scanner.KieRepositoryScannerImpl.setKieContainer(KieRepositoryScannerImpl.java:89) at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieScanner(KieServicesImpl.java:139) at com.boa.rest.KieWb3.main(KieWb3.java:36) Caused by: org.kie.scanner.embedder.MavenEmbedderException: com.google.inject.ProvisionException: Unable to provision, see the following errors:

1) No implementation for org.apache.maven.repository.RepositorySystem was bound. while locating org.apache.maven.execution.DefaultMavenExecutionRequestPopulator at ClassRealm[maven, parent: ClassRealm[maven-parent, parent: null]] (via modules: org.eclipse.sisu.wire.WireModule -> org.eclipse.sisu.plexus.PlexusBindingModule) at ClassRealm[maven, parent: ClassRealm[maven-parent, parent: null]] (via modules: org.eclipse.sisu.wire.WireModule -> org.eclipse.sisu.plexus.PlexusBindingModule) while locating org.apache.maven.execution.MavenExecutionRequestPopulator

1 error role: org.apache.maven.execution.MavenExecutionRequestPopulator roleHint: at org.kie.scanner.embedder.MavenEmbedder.(MavenEmbedder.java:102) at org.kie.scanner.embedder.MavenEmbedder.(MavenEmbedder.java:81) at org.kie.scanner.embedder.MavenEmbedder.(MavenEmbedder.java:75) at org.kie.scanner.embedder.MavenProjectLoader.newMavenEmbedder(MavenProjectLoader.java:66) ... 7 more Caused by: org.codehaus.plexus.component.repository.exception.ComponentLookupException: com.google.inject.ProvisionException: Unable to provision, see the following errors:

1) No implementation for org.apache.maven.repository.RepositorySystem was bound. while locating org.apache.maven.execution.DefaultMavenExecutionRequestPopulator at ClassRealm[maven, parent: ClassRealm[maven-parent, parent: null]] (via modules: org.eclipse.sisu.wire.WireModule -> org.eclipse.sisu.plexus.PlexusBindingModule) at ClassRealm[maven, parent: ClassRealm[maven-parent, parent: null]] (via modules: org.eclipse.sisu.wire.WireModule -> org.eclipse.sisu.plexus.PlexusBindingModule) while locating org.apache.maven.execution.MavenExecutionRequestPopulator

1 error role: org.apache.maven.execution.MavenExecutionRequestPopulator roleHint: at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:267) at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:255) at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:249) at org.kie.scanner.embedder.PlexusComponentProvider.lookup(PlexusComponentProvider.java:42) at org.kie.scanner.embedder.MavenEmbedder.buildMavenExecutionRequest(MavenEmbedder.java:119) at org.kie.scanner.embedder.MavenEmbedder.(MavenEmbedder.java:90) ... 10 more Caused by: com.google.inject.ProvisionException: Unable to provision, see the following errors:

1) No implementation for org.apache.maven.repository.RepositorySystem was bound. while locating org.apache.maven.execution.DefaultMavenExecutionRequestPopulator at ClassRealm[maven, parent: ClassRealm[maven-parent, parent: null]] (via modules: org.eclipse.sisu.wire.WireModule -> org.eclipse.sisu.plexus.PlexusBindingModule) at ClassRealm[maven, parent: ClassRealm[maven-parent, parent: null]] (via modules: org.eclipse.sisu.wire.WireModule -> org.eclipse.sisu.plexus.PlexusBindingModule) while locating org.apache.maven.execution.MavenExecutionRequestPopulator

1 error at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:1018) at org.eclipse.sisu.inject.LazyBeanEntry.getValue(LazyBeanEntry.java:82) at org.eclipse.sisu.plexus.LazyPlexusBean.getValue(LazyPlexusBean.java:51) at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:263) ... 15 more

Ur help will be appriaciated .Thanks in advance.

Regards,

Sushma

Abhijit Humbe

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[Abhijit Humbe]

can you please share pom.xml of project ?

Abhijit Humbe

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[Vikrant Chaudhary]

Hello Sushma,

Did you find any solution of the below issue. I am also facing same problem.