[mdr-users] NullPointer Exception with MDR StandAlone

Martin,

The other problem with the classes I solved. Now, my jar file with my
project it´s correct, but I´m with problems in the mdr files location. I´m
with a NullPointerException. Is it necessary to create or extend any class
to run standalone like standalonemanager and others? I read something
about this but. My method with problems it´s below:

  public void initRepository() {

    Map properties = new HashMap();
    properties.put("storage","org.netbeans.mdr.persistence.btreeimpl.btreestorage.BtreeFactory");
    properties.put(BtreeFactory.STORAGE_FILE_NAME, pathMDR);
    MDRepository repository = new NBMDRepositoryImpl(properties);

    ModelPackage modelPackage = (ModelPackage)
repository.getExtent("Projects model");


    if(modelPackage == null) {
        try {
            modelPackage = (ModelPackage)
repository.createExtent("Projects model");
        } catch (CreationFailedException e) {
        };
    }

    XmiReader xmiReader = (XmiReader)
Lookup.getDefault().lookup(XmiReader.class);

    URL url = this.getClass().getResource("Projects.xml");
    try {
        xmiReader.read(url.toExternalForm(), modelPackage);
    } catch (IOException a) {
    } catch (MalformedXMIException b) {
        System.out.println(b.getMessage());
    }
  }