HHH-16560 Add test for issue

hibernate-core/src/test/java/org/hibernate/orm/test/cid/EmbeddedInsideEmbeddedIdTest.java

@@ -0,0 +1,136 @@
+package org.hibernate.orm.test.cid;
+
+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.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.Embeddable;
+import jakarta.persistence.EmbeddedId;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Table;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+@DomainModel(
+		annotatedClasses = {
+				EmbeddedInsideEmbeddedIdTest.DomainEntity.class
+		}
+)
+@SessionFactory
+@JiraKey("HHH-16560")
+public class EmbeddedInsideEmbeddedIdTest {
+
+	@BeforeAll
+	public void setUp(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					DomainEntity entity = new DomainEntity( InnerWrappingId.of( 1L ), "key" );
+					session.persist( entity );
+				}
+		);
+	}
+
+	@Test
+	public void testQuery(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					session.createQuery( "select d.id from DomainEntity d" ).getSingleResult();
+				}
+		);
+	}
+
+	@Test
+	public void testGet(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					DomainEntity domainEntity = session.get(
+							DomainEntity.class,
+							new OuterWrappingId( InnerWrappingId.of( 1L ) )
+					);
+					assertThat( domainEntity ).isNotNull();
+				}
+		);
+	}
+
+	@Test
+	public void testQuery2(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					session.createQuery( "select id from DomainEntity" ).getSingleResult();
+				}
+		);
+	}
+
+	@Entity(name = "DomainEntity")
+	@Table(name = "domain_entity")
+	public static class DomainEntity {
+		@EmbeddedId
+		private OuterWrappingId id;
+
+		private String name;
+
+		protected DomainEntity() {
+		}
+
+		public DomainEntity(InnerWrappingId artifactId, String name) {
+			this();
+			this.id = new OuterWrappingId( artifactId );
+			this.name = name;
+		}
+
+		public OuterWrappingId getId() {
+			return id;
+		}
+
+		public String getName() {
+			return name;
+		}
+	}
+
+	@Embeddable
+	public static class OuterWrappingId {
+		private InnerWrappingId artifactId;
+		private String idType;
+
+		public static OuterWrappingId of(InnerWrappingId id) {
+			return new OuterWrappingId( id );
+		}
+
+		protected OuterWrappingId() {
+		}
+
+		public OuterWrappingId(InnerWrappingId artifactId) {
+			this();
+			this.artifactId = artifactId;
+			this.idType = artifactId.getClass().getSimpleName();
+		}
+
+		public String getIdType() {
+			return idType;
+		}
+	}
+
+	@Embeddable
+	public static class InnerWrappingId {
+		private Long id;
+
+		protected InnerWrappingId() {
+		}
+
+		protected InnerWrappingId(Long id) {
+			this();
+			this.id = id;
+		}
+
+		public Long getId() {
+			return id;
+		}
+
+		public static InnerWrappingId of(Long id) {
+			return new InnerWrappingId( id );
+		}
+	}
+}