YAWL User Group

Hi.

I'm triying to create my own DBGateway to store YAWL complex types in the database.

I create a small class to save objects in DB but this class is not even loaded by the "ExternalDBGatewayFactory". How do I know that? Well I checked the YAWLEditor log, and the log showed:

2013-06-23 18:03:34,151 [ERROR] :- ExternalDBGatewayFactory ClassNotFoundException: class 'PostgresExternalDBGateway' could not be found - class ignored.

This error do not let me to continue with the develepment of my DBGateway (Detect other errors and create new features). Please help, I have already tried a lot of things even usding a JAD to understand the code but nothing gave me clues.

I attach an image showing my ".java" file. All the necessary methods are called (They are defined but not behaviour was specified yet), look follow.
________________________________________________________________________________________
@Override
public String getDescription() {
return "";
}

@Override
public Element populateCaseData(YSpecificationID arg0, String arg1,
List<YParameter> arg2, List<YVariable> arg3, Element arg4) {
return null;
}

@Override
public Element populateTaskParameter(YTask arg0, YParameter arg1,
Element arg2) {
return null;
}

@Override
public void updateFromCaseData(YSpecificationID arg0, String arg1,
List<YParameter> arg2, Element arg3) {
}
@Override
public void updateFromTaskCompletion(String paramName, Element outputData,Element caseData) {
}