I'm trying to use a custom SequenceGenerator within an enterprise application using openJPA (providing by WebSphere).
When defining a custom Sequence a ClassNotFoundException (for the Sequence class) will be thrown when trying to insert data into the database.
The example will produce the stacktrace attached.
It seems that the wrong class loader is used to instantiate the custom sequence class. A very similar issue seems to be:
OPENJPA-758. With JavaSE (JUnit) all is working fine, but after deploying into WAS the Exception will occur.
I think within the method SequenceMetaData.instantiate(Classloader envLoader) the JavaTypes.classForName() -method with parameter mustExist=false should be used instead of the pure Class.forName() call. But I'm not sure about the Metadata-parameter needed for this method call.