From a4762886fd2ea42a282c77de7e5d4c2c32ad16b8 Mon Sep 17 00:00:00 2001
From: Andrea Boriero <andrea@hibernate.org>
Date: Fri, 3 Nov 2023 09:42:11 +0100
Subject: [PATCH] HHH-17380 Add test for issue

---
 .../EntityWithNullVersionAndMapsIdTest.java   | 104 ++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 hibernate-core/src/test/java/org/hibernate/orm/test/version/EntityWithNullVersionAndMapsIdTest.java

diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/version/EntityWithNullVersionAndMapsIdTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/version/EntityWithNullVersionAndMapsIdTest.java
new file mode 100644
index 0000000000..be0cf12e06
--- /dev/null
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/version/EntityWithNullVersionAndMapsIdTest.java
@@ -0,0 +1,104 @@
+package org.hibernate.orm.test.version;
+
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.JiraKey;
+import org.hibernate.testing.orm.junit.SessionFactory;
+import org.hibernate.testing.orm.junit.SessionFactoryScope;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.MapsId;
+import jakarta.persistence.OneToOne;
+import jakarta.persistence.Version;
+
+@DomainModel(
+		annotatedClasses = {
+				EntityWithNullVersionAndMapsIdTest.Person.class,
+				EntityWithNullVersionAndMapsIdTest.Address.class,
+		}
+)
+@SessionFactory
+@JiraKey("HHH-17380")
+public class EntityWithNullVersionAndMapsIdTest {
+
+	@AfterEach
+	public void tearDown(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					session.createMutationQuery( "delete from Person" );
+					session.createMutationQuery( "delete from Address" );
+
+				}
+		);
+	}
+
+	@Test
+	public void testPersistEntityWithMapsId(SessionFactoryScope scope) {
+		Address address = new Address( "Alex" );
+		scope.inTransaction(
+				session -> {
+					session.persist( address );
+					Person person = new Person( address );
+					session.persist( person );
+				}
+		);
+	}
+
+	@Entity(name = "Person")
+	public static class Person {
+
+		@Id
+		private String name;
+
+		@Version
+		private Long version;
+
+		private String description;
+
+		@MapsId
+		@OneToOne
+		@JoinColumn(name = "name")
+		private Address address;
+
+		public Person() {
+		}
+
+		public Person(Address address) {
+			this.name = address.getName();
+			this.address = address;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public Address getAddress() {
+			return address;
+		}
+	}
+
+	@Entity(name = "Address")
+	public static class Address {
+		@Id
+		private String name;
+
+		@Version
+		private Long version;
+
+		private String description;
+
+		public Address() {
+		}
+
+		public Address(String name) {
+			this.name = name;
+		}
+
+		public String getName() {
+			return name;
+		}
+	}
+}