From 4066fe0445480a0f0131340d02386a0c31f19c66 Mon Sep 17 00:00:00 2001
From: Andrea Boriero <andrea@hibernate.org>
Date: Wed, 18 May 2022 14:58:19 +0200
Subject: [PATCH] HHH-15279 Add test for issue

---
 .../OneToOneMultiLevelEmbeddedId.java         | 142 ++++++++++++++++++
 1 file changed, 142 insertions(+)
 create mode 100644 hibernate-core/src/test/java/org/hibernate/orm/test/onetoone/embeddedid/OneToOneMultiLevelEmbeddedId.java

diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/onetoone/embeddedid/OneToOneMultiLevelEmbeddedId.java b/hibernate-core/src/test/java/org/hibernate/orm/test/onetoone/embeddedid/OneToOneMultiLevelEmbeddedId.java
new file mode 100644
index 0000000000..3ccf3c19bb
--- /dev/null
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/onetoone/embeddedid/OneToOneMultiLevelEmbeddedId.java
@@ -0,0 +1,142 @@
+package org.hibernate.orm.test.onetoone.embeddedid;
+
+import java.util.List;
+
+import org.hibernate.query.Query;
+import org.hibernate.query.criteria.HibernateCriteriaBuilder;
+
+import org.hibernate.testing.TestForIssue;
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.SessionFactory;
+import org.hibernate.testing.orm.junit.SessionFactoryScope;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.Embeddable;
+import jakarta.persistence.Embedded;
+import jakarta.persistence.EmbeddedId;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.JoinColumns;
+import jakarta.persistence.OneToOne;
+import jakarta.persistence.Table;
+import jakarta.persistence.criteria.CriteriaQuery;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+@DomainModel(
+		annotatedClasses = {
+				OneToOneMultiLevelEmbeddedId.Primary.class,
+				OneToOneMultiLevelEmbeddedId.Secondary.class
+		}
+)
+@SessionFactory
+@TestForIssue(jiraKey = "HHH-15279")
+public class OneToOneMultiLevelEmbeddedId {
+
+	@BeforeEach
+	public void setUp(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					final TopId id = new TopId( 1, 2 );
+					final Secondary secondary = new Secondary( id );
+					final Primary primary = new Primary( secondary );
+
+					session.persist( secondary );
+					session.persist( primary );
+				}
+		);
+	}
+
+	@Test
+	public void testIt(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					final HibernateCriteriaBuilder criteriaBuilder = session.getCriteriaBuilder();
+
+					final CriteriaQuery<Primary> query = criteriaBuilder.createQuery( Primary.class );
+
+					query.select( query.from( Primary.class ) );
+
+					final Query<Primary> typedQuery = session.createQuery( query );
+					final List<Primary> results = typedQuery.getResultList();
+					assertThat( results.size(), is( 1 ) );
+				}
+		);
+	}
+
+	@Embeddable
+	public static class NestedId {
+
+		private int nid;
+
+		public NestedId() {
+		}
+
+		public NestedId(int nid) {
+			this.nid = nid;
+		}
+	}
+
+	@Embeddable
+	public static class TopId {
+
+		private int tid;
+
+		@Embedded
+		private NestedId nestedId;
+
+		public TopId() {
+		}
+
+		public TopId(int tid, int nid) {
+			this.tid = tid;
+			this.nestedId = new NestedId( nid );
+		}
+	}
+
+	@Entity(name = "Secondary")
+	@Table(name = "secondary_table")
+	public static class Secondary {
+
+		@EmbeddedId
+		private TopId id;
+
+		public Secondary() {
+		}
+
+		public Secondary(TopId id) {
+			this.id = id;
+		}
+
+		public TopId getId() {
+			return id;
+		}
+	}
+
+	@Entity(name = "Primary")
+	@Table(name = "primary_table")
+	public static class Primary {
+
+		@Id
+		@OneToOne
+		@JoinColumns({
+				@JoinColumn(name = "ptid", referencedColumnName = "tid"),
+				@JoinColumn(name = "pnid", referencedColumnName = "nid")
+		})
+		private Secondary secondary;
+
+		public Primary() {
+		}
+
+		public Primary(Secondary secondary) {
+			this.secondary = secondary;
+		}
+
+		public Secondary getSecondary() {
+			return secondary;
+		}
+	}
+}