HHH-11159 - Add test for issue

(cherry picked from commit 1c1fe2a9af)

hibernate-core/src/test/java/org/hibernate/jpa/test/criteria/nulliteral/NullLiteralExpression.java

@@ -0,0 +1,54 @@
+/*
+ * 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>.
+ */
+package org.hibernate.jpa.test.criteria.nulliteral;
+
+import javax.persistence.EntityManager;
+import javax.persistence.criteria.CriteriaBuilder;
+import javax.persistence.criteria.CriteriaUpdate;
+
+import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
+
+import org.hibernate.testing.TestForIssue;
+import org.junit.Test;
+
+/**
+ * @author Andrea Boriero
+ */
+public class NullLiteralExpression extends BaseEntityManagerFunctionalTestCase {
+
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class[] {Person.class, Subject.class};
+	}
+
+	@Test
+	@TestForIssue( jiraKey = "HHH-11159")
+	public void testNullLiteralExpressionInCriteriaUpdate() {
+		EntityManager entityManager = getOrCreateEntityManager();
+		try {
+			entityManager.getTransaction().begin();
+
+			CriteriaBuilder builder = entityManager.getCriteriaBuilder();
+			CriteriaUpdate<Person> criteriaUpdate = builder.createCriteriaUpdate( Person.class );
+			criteriaUpdate.from(Person.class);
+			criteriaUpdate.set( Person_.subject, builder.nullLiteral( Subject.class ) );
+
+			entityManager.createQuery( criteriaUpdate ).executeUpdate();
+
+			entityManager.getTransaction().commit();
+		}
+		catch (Exception e) {
+			if ( entityManager.getTransaction().isActive() ) {
+				entityManager.getTransaction().rollback();
+			}
+			throw e;
+		}
+		finally {
+			entityManager.close();
+		}
+	}
+}

hibernate-core/src/test/java/org/hibernate/jpa/test/criteria/nulliteral/Person.java

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+/*
+ * 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>.
+ */
+package org.hibernate.jpa.test.criteria.nulliteral;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.ManyToOne;
+
+/**
+ * @author Andrea Boriero
+ */
+@Entity
+public class Person {
+	@Id
+	@GeneratedValue
+	private long id;
+
+	@ManyToOne
+	private Subject subject;
+}

hibernate-core/src/test/java/org/hibernate/jpa/test/criteria/nulliteral/Subject.java

@@ -0,0 +1,23 @@
+/*
+ * 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>.
+ */
+package org.hibernate.jpa.test.criteria.nulliteral;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+/**
+ * @author Andrea Boriero
+ */
+@Entity
+public class Subject {
+	@Id
+	@GeneratedValue
+	private long id;
+
+	private String name;
+}