HHH-17405 Add test for issue

Author: mbellade

hibernate-core/src/test/java/org/hibernate/orm/test/annotations/generics/GenericMappedSuperclassAssociationTest.java

@@ -0,0 +1,211 @@
+/*
+ * 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.annotations.generics;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.hibernate.query.sqm.tree.domain.SqmPath;
+
+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.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.MappedSuperclass;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.criteria.CriteriaBuilder;
+import jakarta.persistence.criteria.CriteriaQuery;
+import jakarta.persistence.criteria.Path;
+import jakarta.persistence.criteria.Root;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Marco Belladelli
+ */
+@DomainModel( annotatedClasses = {
+		GenericMappedSuperclassAssociationTest.Parent.class,
+		GenericMappedSuperclassAssociationTest.ParentA.class,
+		GenericMappedSuperclassAssociationTest.ParentB.class,
+		GenericMappedSuperclassAssociationTest.Child.class,
+		GenericMappedSuperclassAssociationTest.ChildA.class,
+		GenericMappedSuperclassAssociationTest.ChildB.class,
+} )
+@SessionFactory
+@Jira( "https://hibernate.atlassian.net/browse/HHH-17405" )
+public class GenericMappedSuperclassAssociationTest {
+	@BeforeAll
+	public void setUp(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final ParentA parentA = new ParentA( 1L, "parent_a" );
+			session.persist( parentA );
+			session.persist( new ChildA( "child_a_1", parentA ) );
+			session.persist( new ChildA( "child_a_2", parentA ) );
+			final ParentB parentB = new ParentB( 2L, "parent_b" );
+			session.persist( parentB );
+			session.persist( new ChildB( "child_b", parentB ) );
+		} );
+	}
+
+	@AfterAll
+	public void tearDown(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			session.createMutationQuery( String.format( "delete from %s", Child.class.getName() ) ).executeUpdate();
+			session.createMutationQuery( String.format( "delete from %s", Parent.class.getName() ) ).executeUpdate();
+		} );
+	}
+
+	@Test
+	public void testHqlQuery(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final List<ChildA> resultList = session.createQuery(
+					"select c from ChildA c where c.parent.id = 1",
+					ChildA.class
+			).getResultList();
+			assertThat( resultList ).hasSize( 2 );
+			resultList.forEach( c -> assertThat( c.getParent().getName() ).isEqualTo( "parent_a" ) );
+		} );
+	}
+
+	@Test
+	public void testCriteriaQuery(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final CriteriaBuilder cb = session.getCriteriaBuilder();
+			final CriteriaQuery<ChildB> cq = cb.createQuery( ChildB.class );
+			final Root<ChildB> from = cq.from( ChildB.class );
+			final Path<Object> parent = from.get( "parent" );
+			assertThat( parent.getModel().getBindableJavaType() ).isEqualTo( Parent.class );
+			assertThat( ( (SqmPath<?>) parent ).getResolvedModel().getBindableJavaType() ).isEqualTo( ParentB.class );
+			cq.select( from ).where( cb.equal( from.get( "parent" ).get( "id" ), 2L ) );
+			final ChildB result = session.createQuery( cq ).getSingleResult();
+			assertThat( result.getParent().getName() ).isEqualTo( "parent_b" );
+		} );
+	}
+
+	@MappedSuperclass
+	public static abstract class Child<P extends Parent<?>> {
+		@Id
+		@GeneratedValue
+		private Long id;
+
+		private String name;
+
+		@ManyToOne
+		private P parent;
+
+		public Child() {
+		}
+
+		public Child(String name, P parent) {
+			this.name = name;
+			this.parent = parent;
+		}
+
+		public Long getId() {
+			return id;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public P getParent() {
+			return parent;
+		}
+	}
+
+	@MappedSuperclass
+	public static abstract class Parent<C extends Child<?>> {
+		private String name;
+
+		@OneToMany( mappedBy = "parent" )
+		private List<C> children = new ArrayList<>();
+
+		public Parent() {
+		}
+
+		public Parent(String name) {
+			this.name = name;
+		}
+
+		public abstract Long getId();
+
+		public String getName() {
+			return name;
+		}
+
+		public List<C> getChildren() {
+			return children;
+		}
+	}
+
+	@Entity( name = "ChildA" )
+	public static class ChildA extends Child<ParentA> {
+		public ChildA() {
+		}
+
+		public ChildA(String name, ParentA parent) {
+			super( name, parent );
+		}
+	}
+
+	@Entity( name = "ChildB" )
+	public static class ChildB extends Child<ParentB> {
+		public ChildB() {
+		}
+
+		public ChildB(String name, ParentB parent) {
+			super( name, parent );
+		}
+	}
+
+	@Entity( name = "ParentA" )
+	public static class ParentA extends Parent<ChildA> {
+		@Id
+		private Long id;
+
+		public ParentA() {
+		}
+
+		public ParentA(Long id, String name) {
+			super( name );
+			this.id = id;
+		}
+
+		@Override
+		public Long getId() {
+			return id;
+		}
+	}
+
+	@Entity( name = "ParentB" )
+	public static class ParentB extends Parent<ChildB> {
+		@Id
+		private Long id;
+
+		public ParentB() {
+		}
+
+		public ParentB(Long id, String name) {
+			super( name );
+			this.id = id;
+		}
+
+		@Override
+		public Long getId() {
+			return id;
+		}
+	}
+}