HHH-15730 Fix NPE in EnhancedSetterImpl

hibernate-core/src/test/java/org/hibernate/orm/test/bytecode/enhancement/merge/CompositeNullTest.java

@@ -0,0 +1,85 @@
+/*
+ * 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.orm.test.bytecode.enhancement.merge;
+
+import org.hibernate.testing.TestForIssue;
+import org.hibernate.testing.bytecode.enhancement.BytecodeEnhancerRunner;
+import org.hibernate.testing.bytecode.enhancement.EnhancementOptions;
+import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import jakarta.persistence.Embeddable;
+import jakarta.persistence.Embedded;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+import static org.hibernate.testing.transaction.TransactionUtil.doInHibernate;
+
+/**
+ * @author Luis Barreiro
+ */
+@RunWith( BytecodeEnhancerRunner.class )
+@EnhancementOptions(lazyLoading = true, inlineDirtyChecking = true)
+public class CompositeNullTest extends BaseCoreFunctionalTestCase {
+
+    private long entityId;
+
+    @Override
+    public Class<?>[] getAnnotatedClasses() {
+        return new Class<?>[]{ParentEntity.class, Address.class};
+    }
+
+    @Before
+    public void prepare() {
+        ParentEntity parent = new ParentEntity();
+        parent.description = "Test";
+
+        doInHibernate( this::sessionFactory, s -> {
+            s.persist( parent );
+        } );
+
+        entityId = parent.id;
+    }
+
+    @Test
+    @TestForIssue( jiraKey = "HHH-15730")
+    public void testNullComposite() {
+        doInHibernate( this::sessionFactory, s -> {
+            ParentEntity parentEntity = s.find( ParentEntity.class, entityId );
+            Assert.assertNull( parentEntity.address );
+        } );
+    }
+
+    // --- //
+
+    @Entity(name = "Parent")
+    @Table( name = "PARENT_ENTITY" )
+    private static class ParentEntity {
+
+        @Id
+        @GeneratedValue
+        Long id;
+
+        String description;
+
+        @Embedded
+        Address address;
+    }
+
+    @Embeddable
+    @Table( name = "ADDRESS" )
+    private static class Address {
+
+        String street;
+
+    }
+}