Named Query Error

Question

Hi,
I'm having trouble passing argument to a named query in the mapping workbench.
Here is my SQL:
SELECT COUNT(*) FROM VALID_PARTY_CLASSIF, CLASSIF_TYPE WHERE CLASSIF_TYPE.CLASSIF_TYPE_ID = VALID_PARTY_CLASSIF.CLASSIF_TYPE_ID AND CLASSIF_TYPE.CLASSIF_TYPE_ID = #ID
and when I find and execute the query, getting following error
Execute query ReadObjectQuery(com.amgen.bria.business.bizobject.ClassificationTypeBO)
SELECT COUNT(*) FROM VALID_PARTY_CLASSIF, CLASSIF_TYPE WHERE CLASSIF_TYPE.CLASSIF_TYPE_ID = VALID_PARTY_CLASSIF.CLASSIF_TYPE_ID AND CLASSIF_TYPE.CLASSIF_TYPE_ID = ?
     bind => [56]
Exception [TOPLINK-6044] (OracleAS TopLink - 10g (9.0.4) (Build 031018)): oracle.toplink.exceptions.QueryException
Exception Description: The primary key read from the row [DatabaseRow(
     => 0)] during the execution of the query was detected to be null. Primary keys must not contain null.
Query: ReadObjectQuery(com.amgen.bria.business.bizobject.ClassificationTypeBO)Local Exception Stack:
Exception [TOPLINK-6044] (OracleAS TopLink - 10g (9.0.4) (Build 031018)): oracle.toplink.exceptions.QueryException
Exception Description: The primary key read from the row [DatabaseRow(
     => 0)] during the execution of the query was detected to be null. Primary keys must not contain null.
Query: ReadObjectQuery(com.amgen.bria.business.bizobject.ClassificationTypeBO)
     at oracle.toplink.exceptions.QueryException.nullPrimaryKeyInBuildingObject(QueryException.java:541)
     at oracle.toplink.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:262)
     at oracle.toplink.queryframework.ObjectLevelReadQuery.buildObject(ObjectLevelReadQuery.java:226)
     at oracle.toplink.queryframework.ReadObjectQuery.execute(ReadObjectQuery.java:344)
     at oracle.toplink.queryframework.DatabaseQuery.execute(DatabaseQuery.java:498)
     at oracle.toplink.queryframework.ReadQuery.execute(ReadQuery.java:111)
     at oracle.toplink.publicinterface.Session.internalExecuteQuery(Session.java:1968)
     at oracle.toplink.threetier.ServerSession.internalExecuteQuery(ServerSession.java:629)
     at oracle.toplink.threetier.ClientSession.internalExecuteQuery(ClientSession.java:392)
     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:1096)
     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:1065)
     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:966)
     at com.amgen.bria.persistence.module.toplink.TopLinkPersistenceService.internalExecuteQuery(TopLinkPersistenceService.java:137)
     at com.amgen.bria.persistence.PersistenceService.executeQuery(PersistenceService.java:97)
     at com.amgen.cma.persistence.service.ClassificationPersistenceService.findCustomerForClassifTypeCount(ClassificationPersistenceService.java:405)
     at com.amgen.cma.persistence.service.ClassificationPersistenceServiceTest.testFindCustomerForClassifTypeCount(ClassificationPersistenceServiceTest.java:193)
     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:421)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:305)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:186)
client released
Please let me know if I am missing anything.
Thanks
Saket

Answer 1

Saket, the problem is right here:
ReadObjectQuery(com.amgen.bria.business.bizobject.Clas
ificationTypeBO)
When you read a an object mapping back, the primary key you have specified for that object mapping in Toplink has to be part of this search criteria (it is how it's stored in toplink's identity map/cache)
Since you are only executing a 'select count(*)', it is erroring out
HTH,
Sean