Test for Issue HHH-12870

hibernate-core/src/main/java/org/hibernate/internal/AbstractSharedSessionContract.java

@@ -935,9 +935,10 @@ public abstract class AbstractSharedSessionContract implements SharedSessionCont
 		if ( Tuple.class.equals( resultClass ) ) {
 			query.setResultTransformer( new NativeQueryTupleTransformer() );
 		}
-		else {
-			query.addEntity( "alias1", resultClass.getName(), LockMode.READ );
-		}
+//      why should we add here an Entity automatically: it's a wild guess and erratic most times
+//		else {
+//			query.addEntity( "alias1", resultClass.getName(), LockMode.READ );
+//		}
 	}
 
 	@Override

hibernate-core/src/test/java/org/hibernate/test/sql/hand/Speech.java

@@ -12,31 +12,37 @@ package org.hibernate.test.sql.hand;
 /**
  * @author Emmanuel Bernard
  */
-public class Speech {
+public class Speech implements SpeechInterface {
 	private Integer id;
 	private String name;
 	private Double length;
 
+	@Override
 	public Integer getId() {
 		return id;
 	}
 
+	@Override
 	public void setId(Integer id) {
 		this.id = id;
 	}
 
+	@Override
 	public Double getLength() {
 		return length;
 	}
 
+	@Override
 	public void setLength(Double length) {
 		this.length = length;
 	}
 
+	@Override
 	public String getName() {
 		return name;
 	}
 
+	@Override
 	public void setName(String name) {
 		this.name = name;
 	}

hibernate-core/src/test/java/org/hibernate/test/sql/hand/SpeechInterface.java

@@ -0,0 +1,29 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+
+//$Id: $
+package org.hibernate.test.sql.hand;
+
+
+/**
+ * @author Günther Demetz
+ */
+public interface SpeechInterface {
+	
+	public Integer getId();
+
+	public void setId(Integer id);
+
+	public Double getLength();
+	
+
+	public void setLength(Double length);
+
+	public String getName();
+
+	public void setName(String name);
+}

hibernate-core/src/test/java/org/hibernate/test/sql/hand/query/NativeSQLQueriesTest.java

@@ -31,6 +31,7 @@ import org.hibernate.dialect.H2Dialect;
 import org.hibernate.dialect.MySQL5Dialect;
 import org.hibernate.engine.query.spi.sql.NativeSQLQueryReturn;
 import org.hibernate.engine.spi.NamedSQLQueryDefinitionBuilder;
+import org.hibernate.query.NativeQuery;
 import org.hibernate.transform.BasicTransformerAdapter;
 import org.hibernate.transform.DistinctRootEntityResultTransformer;
 import org.hibernate.transform.Transformers;
@@ -42,6 +43,7 @@ import org.hibernate.type.TimestampType;
 import org.hibernate.testing.FailureExpected;
 import org.hibernate.testing.RequiresDialect;
 import org.hibernate.testing.SkipForDialect;
+import org.hibernate.testing.TestForIssue;
 import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
 import org.hibernate.test.sql.hand.Dimension;
 import org.hibernate.test.sql.hand.Employment;
@@ -53,6 +55,7 @@ import org.hibernate.test.sql.hand.Person;
 import org.hibernate.test.sql.hand.Product;
 import org.hibernate.test.sql.hand.SpaceShip;
 import org.hibernate.test.sql.hand.Speech;
+import org.hibernate.test.sql.hand.SpeechInterface;
 import org.hibernate.test.sql.hand.TextHolder;
 import org.junit.Test;
 
@@ -740,6 +743,48 @@ public class NativeSQLQueriesTest extends BaseCoreFunctionalTestCase {
 		s.getTransaction().commit();
 		s.close();
 	}
+	
+	@Test
+	@TestForIssue(jiraKey="HHH-12870")
+	public void testExplicitAddEntity() {
+		Session s = openSession();
+		Transaction t = s.beginTransaction();
+		Speech speech = new Speech();
+		speech.setLength( new Double( 23d ) );
+		speech.setName( "Mine" );
+		s.persist( speech );
+		s.flush();
+		s.clear();
+
+		NativeQuery<Speech> query = s.createNativeQuery( "select {s.*} from Speech s", Speech.class );
+		query.addEntity("s", Speech.class);
+		List<Speech> l = query.list();
+		assertEquals( l.size(), 1 );
+
+		t.rollback();
+		s.close();
+	}
+	
+	@Test
+	@TestForIssue(jiraKey="HHH-12870")
+	public void testInterfaceReturnType() {
+		Session s = openSession();
+		Transaction t = s.beginTransaction();
+		Speech speech = new Speech();
+		speech.setLength( new Double( 23d ) );
+		speech.setName( "Mine" );
+		s.persist( speech );
+		s.flush();
+		s.clear();
+
+		NativeQuery<SpeechInterface> query = s.createNativeQuery( "select {s.*} from Speech s", SpeechInterface.class );
+		query.addEntity("s", Speech.class);
+		List<SpeechInterface> l = query.list();
+		assertEquals( l.size(), 1 );
+
+		t.rollback();
+		s.close();
+	}
 
 	@Test
 	public void testMixAndMatchEntityScalar() {