JPOX throws NPE when result class is specified with no result clause for 
deletion by query using single string query.
---------------------------------------------------------------------------------------------------------------------

         Key: JDO-239
         URL: http://issues.apache.org/jira/browse/JDO-239
     Project: JDO
        Type: Bug
  Components: tck20  
    Reporter: Michael Watzek
 Assigned to: Erik Bengtson 


The test case DeleteQueryElements fails throwing a NPE for the query below. The 
test case is expected to thow a JDOUserException. The same test case succeeds 
when an API query is used.

14:22:25,250 (main) DEBUG [org.apache.jdo.tck] - Deleting persistent by single 
string query: SELECT INTO org.apache.jdo.tck.query.result.classes.FullName FROM 
org.apache.jdo.tck.pc.company.Person 
14:22:25,250 (main) INFO  [org.apache.jdo.tck] - Exception during setUp or 
runtest: 
java.lang.NullPointerException
        at org.jpox.store.query.ResultClassROF.<init>(ResultClassROF.java:99)
        at 
org.jpox.store.rdbms.extent.ClassTableExtent.newResultObjectFactory(ClassTableExtent.java:374)
        at org.jpox.store.query.JDOQLQuery.performExecute(JDOQLQuery.java:642)
        at 
org.jpox.store.query.JDOQLQuery.performDeletePersistentAll(JDOQLQuery.java:764)
        at org.jpox.store.query.Query.deletePersistentAll(Query.java:1131)
        at org.jpox.store.query.Query.deletePersistentAll(Query.java:1094)
        at org.jpox.store.query.Query.deletePersistentAll(Query.java:1068)
        at org.apache.jdo.tck.query.QueryTest.delete(QueryTest.java:1322)
        at org.apache.jdo.tck.query.QueryTest.delete(QueryTest.java:1286)
        at 
org.apache.jdo.tck.query.QueryTest.deletePersistentAllBySingleStringQuery(QueryTest.java:1259)
        at 
org.apache.jdo.tck.query.delete.DeleteQueryElements.testNegative(DeleteQueryElements.java:238)
        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 org.apache.jdo.tck.JDO_Test.runBare(JDO_Test.java:204)
        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 junit.framework.TestSuite.runTest(TestSuite.java:208)
        at junit.framework.TestSuite.run(TestSuite.java:203)
        at junit.textui.TestRunner.doRun(TestRunner.java:116)
        at junit.textui.TestRunner.doRun(TestRunner.java:109)
        at 
org.apache.jdo.tck.util.BatchTestRunner.start(BatchTestRunner.java:120)
        at org.apache.jdo.tck.util.BatchTestRunner.main(BatchTestRunner.java:95)


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