HHH-18390 Add test for issue

hibernate-core/src/test/java/org/hibernate/orm/test/mapping/onetoone/OneToOneUniqueJoinColumnsTest.java

@@ -0,0 +1,179 @@
+/*
+ * 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.mapping.onetoone;
+
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.Jira;
+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.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.JoinColumns;
+import jakarta.persistence.MappedSuperclass;
+import jakarta.persistence.OneToOne;
+import jakarta.persistence.Table;
+import jakarta.persistence.UniqueConstraint;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Marco Belladelli
+ */
+@DomainModel( annotatedClasses = {
+		OneToOneUniqueJoinColumnsTest.BaseEntity.class,
+		OneToOneUniqueJoinColumnsTest.EntityA.class,
+		OneToOneUniqueJoinColumnsTest.EntityB.class,
+} )
+@SessionFactory
+@Jira( "https://hibernate.atlassian.net/browse/HHH-18390" )
+public class OneToOneUniqueJoinColumnsTest {
+	@Test
+	public void testFindBothEntities(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final EntityA entityA = session.createSelectionQuery( "from EntityA", EntityA.class ).getSingleResult();
+			assertThat( entityA ).isNotNull().extracting( BaseEntity::getName ).isEqualTo( "entity_a" );
+			assertThat( entityA.getEntityB() ).isNotNull().extracting( BaseEntity::getName ).isEqualTo( "entity_b" );
+		} );
+	}
+
+	@Test
+	public void testFindBothEntitiesInReverse(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final EntityB entityB = session.createSelectionQuery( "from EntityB", EntityB.class ).getSingleResult();
+			assertThat( entityB ).isNotNull().extracting( BaseEntity::getName ).isEqualTo( "entity_b" );
+			assertThat( entityB.getEntityA() ).isNotNull().extracting( BaseEntity::getName ).isEqualTo( "entity_a" );
+		} );
+	}
+
+	@BeforeAll
+	public void setUp(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final EntityA entityA = new EntityA();
+			entityA.setName( "entity_a" );
+			entityA.setColumnAEntityA( 10L );
+			entityA.setColumnBEntityA( 11L );
+			session.persist( entityA );
+
+			final EntityB entityB = new EntityB();
+			entityB.setName( "entity_b" );
+			entityB.setColumnAEntityB( 10L );
+			entityB.setColumnBEntityB( 11L );
+			session.persist( entityB );
+		} );
+	}
+
+	@MappedSuperclass
+	static class BaseEntity {
+		@Id
+		@GeneratedValue
+		public Long id;
+
+		public String name;
+
+		public Long getId() {
+			return id;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+	}
+
+	@Entity( name = "EntityA" )
+	@Table( name = "EntityA", uniqueConstraints = @UniqueConstraint( columnNames = {
+			"columnAEntityA",
+			"columnBEntityA"
+	} ) )
+	static class EntityA extends BaseEntity {
+		@Column( name = "columnAEntityA" )
+		public Long columnAEntityA;
+
+		@Column( name = "columnBEntityA" )
+		public Long columnBEntityA;
+
+		@OneToOne( mappedBy = "entityA" )
+		public EntityB entityB;
+
+		public Long getColumnAEntityA() {
+			return columnAEntityA;
+		}
+
+		public void setColumnAEntityA(Long columnAEntityA) {
+			this.columnAEntityA = columnAEntityA;
+		}
+
+		public Long getColumnBEntityA() {
+			return columnBEntityA;
+		}
+
+		public void setColumnBEntityA(Long columnBEntityA) {
+			this.columnBEntityA = columnBEntityA;
+		}
+
+		public EntityB getEntityB() {
+			return entityB;
+		}
+
+		public void setEntityB(EntityB entityB) {
+			this.entityB = entityB;
+		}
+	}
+
+	@Entity( name = "EntityB" )
+	@Table( name = "EntityB", uniqueConstraints = @UniqueConstraint( columnNames = {
+			"columnAEntityB",
+			"columnBEntityB"
+	} ) )
+	static class EntityB extends BaseEntity {
+		@Column( name = "columnAEntityB" )
+		public Long columnAEntityB;
+		@Column( name = "columnBEntityB" )
+		public Long columnBEntityB;
+
+		@OneToOne( fetch = FetchType.LAZY )
+		@JoinColumns( {
+				@JoinColumn( name = "columnAEntityB", referencedColumnName = "columnAEntityA", insertable = false, updatable = false ),
+				@JoinColumn( name = "columnBEntityB", referencedColumnName = "columnBEntityA", insertable = false, updatable = false )
+		} )
+		public EntityA entityA;
+
+		public Long getColumnAEntityB() {
+			return columnAEntityB;
+		}
+
+		public void setColumnAEntityB(Long columnAEntityB) {
+			this.columnAEntityB = columnAEntityB;
+		}
+
+		public Long getColumnBEntityB() {
+			return columnBEntityB;
+		}
+
+		public void setColumnBEntityB(Long columnBEntityB) {
+			this.columnBEntityB = columnBEntityB;
+		}
+
+		public EntityA getEntityA() {
+			return entityA;
+		}
+
+		public void setEntityA(EntityA entityA) {
+			this.entityA = entityA;
+		}
+	}
+}