java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at kodo.jdbc.sql.Select$SelectJoins.join(Select.java:2722)
at kodo.jdbc.sql.Select$SelectJoins.outerJoinRelation(Select.java:2702)
at kodo.jdbc.sql.Select.outerJoinRelation(Select.java:2059)
at kodo.jdbc.meta.OneToOneFieldMapping.eagerJoin(OneToOneFieldMapping.java:544)
at kodo.jdbc.meta.OneToOneFieldMapping.selectEagerJoin(OneToOneFieldMapping.java:491)
at kodo.jdbc.runtime.JDBCStoreManager.selectBaseMappings(JDBCStoreManager.java:1271)
at kodo.jdbc.runtime.JDBCStoreManager.selectMappings(JDBCStoreManager.java:1097)
at kodo.jdbc.runtime.JDBCStoreManager.load(JDBCStoreManager.java:501)
at kodo.runtime.DelegatingStoreManager.load(DelegatingStoreManager.java:133)
at kodo.runtime.ROPStoreManager.load(ROPStoreManager.java:79)
at kodo.runtime.StateManagerImpl.loadFields(StateManagerImpl.java:3128)
at kodo.runtime.StateManagerImpl.loadField(StateManagerImpl.java:3227)
at kodo.runtime.StateManagerImpl.isLoaded(StateManagerImpl.java:1368)
at com.commercehub.core.engine.Role.jdoGetimpl(Role.java)
at com.commercehub.core.engine.Role.getName(Role.java:123)
at undefined.NewRelnTest.testLoadRole1(NewRelnTest.java:60)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
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:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:436)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:311)

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