HHH-16616 Add test for issue
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/*
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* Hibernate, Relational Persistence for Idiomatic Java
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*
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* License: GNU Lesser General Public License (LGPL), version 2.1 or later
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* See the lgpl.txt file in the root directory or http://www.gnu.org/licenses/lgpl-2.1.html
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*/
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package org.hibernate.orm.test.mapping.inheritance;
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import java.util.ArrayList;
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import java.util.List;
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import org.hibernate.testing.jdbc.SQLStatementInspector;
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import org.hibernate.testing.orm.junit.DomainModel;
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import org.hibernate.testing.orm.junit.Jira;
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import org.hibernate.testing.orm.junit.SessionFactory;
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import org.hibernate.testing.orm.junit.SessionFactoryScope;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.api.Test;
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import jakarta.persistence.DiscriminatorColumn;
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import jakarta.persistence.Entity;
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import jakarta.persistence.Id;
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import jakarta.persistence.Inheritance;
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import jakarta.persistence.InheritanceType;
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import jakarta.persistence.JoinColumn;
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import jakarta.persistence.OneToMany;
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import static org.assertj.core.api.Assertions.assertThat;
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/**
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* @author Laurent Almeras
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*/
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@DomainModel( annotatedClasses = {
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ManyToOneInheritanceSubTypeTest.SuperType.class,
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ManyToOneInheritanceSubTypeTest.TypeA.class,
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ManyToOneInheritanceSubTypeTest.TypeB.class,
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ManyToOneInheritanceSubTypeTest.LinkedEntity.class
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} )
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@SessionFactory( useCollectingStatementInspector = true )
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@Jira( "https://hibernate.atlassian.net/browse/HHH-16616" )
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public class ManyToOneInheritanceSubTypeTest {
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@BeforeAll
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public void setUp(SessionFactoryScope scope) {
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scope.inTransaction( session -> {
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final SuperType superType = new SuperType( 1 );
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final TypeB typeB = new TypeB( 2, "typeB" );
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final TypeA typeA = new TypeA( 3, "typeA" );
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final LinkedEntity entity = new LinkedEntity( 4 );
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entity.addTypeA( typeA );
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session.persist( superType );
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session.persist( typeB );
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session.persist( typeA );
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session.persist( entity );
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} );
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}
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@Test
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public void testFind(SessionFactoryScope scope) {
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final SQLStatementInspector inspector = scope.getCollectingStatementInspector();
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inspector.clear();
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scope.inTransaction( session -> {
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final LinkedEntity entity = session.find( LinkedEntity.class, 4 );
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assertThat( entity.getTypeAS() ).hasSize( 1 );
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inspector.assertExecutedCount( 2 );
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inspector.assertNumberOfOccurrenceInQueryNoSpace( 1, "disc_col", 1 );
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} );
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}
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@Test
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public void testJoinFetch(SessionFactoryScope scope) {
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final SQLStatementInspector inspector = scope.getCollectingStatementInspector();
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inspector.clear();
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scope.inTransaction( session -> {
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final LinkedEntity entity = session.createQuery(
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"from LinkedEntity e left join fetch e.typeAS",
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LinkedEntity.class
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).getSingleResult();
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assertThat( entity.getTypeAS() ).hasSize( 1 );
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inspector.assertExecutedCount( 1 );
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inspector.assertNumberOfOccurrenceInQueryNoSpace( 0, "disc_col", 1 );
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} );
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}
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@Entity( name = "SuperType" )
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@Inheritance( strategy = InheritanceType.SINGLE_TABLE )
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@DiscriminatorColumn( name = "disc_col" )
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public static class SuperType {
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@Id
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private Integer id;
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public SuperType() {
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}
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public SuperType(Integer id) {
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this.id = id;
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}
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}
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@Entity( name = "TypeA" )
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public static class TypeA extends SuperType {
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private String typeAName;
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public TypeA() {
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}
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public TypeA(Integer id, String typeAName) {
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super( id );
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this.typeAName = typeAName;
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}
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}
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@Entity( name = "TypeB" )
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public static class TypeB extends SuperType {
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private String typeBName;
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public TypeB() {
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}
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public TypeB(Integer id, String typeBName) {
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super( id );
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this.typeBName = typeBName;
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}
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}
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@Entity( name = "LinkedEntity" )
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public static class LinkedEntity {
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@Id
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private Integer id;
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@OneToMany
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@JoinColumn( name = "linked_id" )
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private List<TypeA> typeAS = new ArrayList<>();
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public LinkedEntity() {
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}
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public LinkedEntity(Integer id) {
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this.id = id;
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}
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public List<TypeA> getTypeAS() {
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return typeAS;
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}
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public void addTypeA(TypeA typeA) {
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this.typeAS.add( typeA );
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}
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}
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}
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