IllegalArgumentException creating DataObject

[Claus Straube]

Hello.

I'm trying to create a DataObject from a XSD string:
      HelperContext scope = SDOUtil.createHelperContext();
            String testDoc =     "<?xml version=\"1.0\" 
encoding=\"UTF-8\"?>"+
                          "<schema 
xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"; "+
                          "targetNamespace=\"http://mynamespace\"; "+
                          "xmlns=\"http://mynamespace\";>"+
                          "<element name=\"document\" 
type=\"documentType\"/>"+
                          "<complexType name=\"documentType\">"+
                          "    <sequence>"+
                          "        <element name=\"foo\" 
type=\"xsd:string\"/>"+
                          "        <element name=\"bar\" 
type=\"xsd:string\"/>"+
                          "    </sequence>"+
                          "</complexType>"+
                          "</schema>";
            scope.getXSDHelper().define(testDoc);
      DataFactory factory = scope.getDataFactory();
      DataObject document = factory.create("http://mynamespace";, 
"documentType");

This code generates a IllegalArgumentException while creating the 
DataObject:

java.lang.IllegalArgumentException
  at 
org.apache.tuscany.sdo.util.DataObjectUtil.create(DataObjectUtil.java:2549)
  at 
org.apache.tuscany.sdo.helper.DataFactoryImpl.create(DataFactoryImpl.java:52) 

  at 
org.apache.tuscany.sdo.helper.DataFactoryImpl.create(DataFactoryImpl.java:42) 

  at 
com.catify.core.process.test.ProcessRepositoryTest.testAsync(ProcessRepositoryTest.java:266) 

  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 

  at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 

  at java.lang.reflect.Method.invoke(Method.java:616)
  at junit.framework.TestCase.runTest(TestCase.java:164)
  at junit.framework.TestCase.runBare(TestCase.java:130)
  at 
org.springframework.test.ConditionalTestCase.runBare(ConditionalTestCase.java:76) 

  at junit.framework.TestResult$1.protect(TestResult.java:106)
  at junit.framework.TestResult.runProtected(TestResult.java:124)
  at junit.framework.TestResult.run(TestResult.java:109)
  at junit.framework.TestCase.run(TestCase.java:120)
  at 
org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130) 

  at 
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 

  at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) 

  at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) 

  at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) 

  at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) 


The Tuscany version I'm using is 1.1.1

Any suggestions what I'm doing wrong?

Thanks in advance!

Best regards - Claus