HHH-11762 - PersistenceUnitUtilImpl#getIdentifier throws MappingException for non-entity

Author: gbadner

hibernate-core/src/main/java/org/hibernate/jpa/internal/PersistenceUnitUtilImpl.java

@@ -11,6 +11,7 @@
 import javax.persistence.spi.LoadState;
 
 import org.hibernate.Hibernate;
+import org.hibernate.MappingException;
 import org.hibernate.engine.spi.EntityEntry;
 import org.hibernate.engine.spi.ManagedEntity;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
@@ -92,9 +93,15 @@ else if ( entity instanceof ManagedEntity ) {
 
 	private Object getIdentifierFromPersister(Object entity) {
 		Class<?> entityClass = Hibernate.getClass( entity );
-		EntityPersister persister = sessionFactory.getMetamodel().entityPersister( entityClass );
-		if ( persister == null ) {
-			throw new IllegalArgumentException( entityClass.getName() + " is not an entity" );
+		final EntityPersister persister;
+		try {
+			persister = sessionFactory.getMetamodel().entityPersister( entityClass );
+			if ( persister == null ) {
+				throw new IllegalArgumentException( entityClass.getName() + " is not an entity" );
+			}
+		}
+		catch (MappingException ex) {
+			throw new IllegalArgumentException( entityClass.getName() + " is not an entity", ex );
 		}
 		return persister.getIdentifier( entity, null );
 	}

hibernate-core/src/test/java/org/hibernate/jpa/test/factory/puUtil/GetIdentifierTest.java

@@ -15,6 +15,8 @@
 import org.junit.Before;
 import org.junit.Test;
 
+import static org.junit.Assert.fail;
+
 /**
  * @author Steve Ebersole
  */
@@ -51,6 +53,28 @@ public void getIdentifierTest() throws Exception {
 		entityManager.close();
 	}
 
+	@Test
+	public void getIdentifierOfNonEntityTest() {
+		try {
+			entityManagerFactory().getPersistenceUnitUtil().getIdentifier( this );
+			fail( "should have thrown IllegalArgumentException" );
+		}
+		catch (IllegalArgumentException ex) {
+			// expected
+		}
+	}
+
+	@Test
+	public void getIdentifierOfNullTest() {
+		try {
+			entityManagerFactory().getPersistenceUnitUtil().getIdentifier( null );
+			fail( "should have thrown IllegalArgumentException" );
+		}
+		catch (IllegalArgumentException ex) {
+			// expected
+		}
+	}
+
 	private NestedLegacyEntity createExisitingNestedLegacyEntity() {
 
 		ModernEntity modernEntity = new ModernEntity();