OPENJPA-2618 pevent Tuple to pass through in createXQuery methods since we dont support it yet

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@1716891 13f79535-47bb-0310-9956-ffa450edef68

openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/query/TupleQueryTest.java

@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.openjpa.persistence.query;
+
+import junit.textui.TestRunner;
+import org.apache.openjpa.persistence.simple.NamedEntity;
+import org.apache.openjpa.persistence.test.SingleEMFTestCase;
+
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceException;
+import javax.persistence.Tuple;
+
+public class TupleQueryTest
+    extends SingleEMFTestCase {
+
+    public void setUp() {
+        setUp(NamedEntity.class);
+
+        NamedEntity e = new NamedEntity();
+        e.setName("e"); 
+
+        EntityManager em = emf.createEntityManager();
+        em.getTransaction().begin();
+        em.persist(e);
+        em.getTransaction().commit();
+        em.close();
+    }
+
+    public void testNormalQuery() {
+        EntityManager em = emf.createEntityManager();
+        try {
+            em.createQuery("select e.name from named e", Tuple.class);
+            fail();
+        } catch (final PersistenceException pe) {
+            // ok
+        } finally {
+            em.close();
+        }
+    }
+
+    public static void main(String[] args) {
+        TestRunner.run(TupleQueryTest.class);
+    }
+}
+

openjpa-persistence/src/main/java/org/apache/openjpa/persistence/EntityManagerImpl.java

@@ -46,6 +46,7 @@ import javax.persistence.FlushModeType;
 import javax.persistence.LockModeType;
 import javax.persistence.PessimisticLockScope;
 import javax.persistence.Query;
+import javax.persistence.Tuple;
 import javax.persistence.TypedQuery;
 import javax.persistence.criteria.CriteriaQuery;
 import javax.persistence.criteria.ParameterExpression;
@@ -972,9 +973,16 @@ public class EntityManagerImpl
 
     @SuppressWarnings("unchecked")
     public <T> TypedQuery<T> createQuery(String query, Class<T> resultClass) {
+        checkTuple(resultClass);
         return createQuery(query).setResultClass(resultClass);
     }
 
+    private <T> void checkTuple(Class<T> resultClass) {
+        if (Tuple.class == resultClass) {
+            throw new PersistenceException("Tuple is not a valid type", null, null, true);
+        }
+    }
+
     public OpenJPAQuery createQuery(String query) {
         return createQuery(JPQLParser.LANG_JPQL, query);
     }
@@ -1014,6 +1022,7 @@ public class EntityManagerImpl
     
     @SuppressWarnings("unchecked")
     public <T> TypedQuery<T> createNamedQuery(String name, Class<T> resultClass) {
+        checkTuple(resultClass);
         return createNamedQuery(name).setResultClass(resultClass);
     }
 
@@ -1055,6 +1064,7 @@ public class EntityManagerImpl
     }
 
     public OpenJPAQuery createNativeQuery(String query, Class cls) {
+        checkTuple(cls);
         return createNativeQuery(query).setResultClass(cls);
     }