java.lang.NullPointerException when trying to create an empty dat a graph

[Scott Kurinskas]

Hi-

I'm trying to put togther a very simple (bordering on trivial) example
constructing an empty DataObject.  Its very similar to the ChangeSummary
test case.  However, whenever I try to construct an empty DataObject, I
receive a null pointer exception.  My example is below.  Its failing on
'DataObject customer ...'.  I do not understand why this exception occurs.
Any assistance would be greatly appreciated.

try {           
        DataGraph               dataGraph       = SDOUtil.createDataGraph();
        DataObject              customer        =
dataGraph.createRootObject("http://www.example.com/simple";, "Customer");
        ...
                

Exception:

java.lang.NullPointerException
        at org.eclipse.emf.ecore.util.EcoreUtil.create(EcoreUtil.java:2918)
        at
org.apache.tuscany.sdo.util.DataObjectUtil.create(DataObjectUtil.java:2324)
        at
org.apache.tuscany.sdo.impl.DataGraphImpl.createRootObject(DataGraphImpl.jav
a:594)
        at gemfire.example.customer.sdo.SDOTest.main(SDOTest.java:21) 
 

I'm using M1.

Regards,
Scptt