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HHH-16555 Add test for issue

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Marco Belladelli 2023-05-05 12:33:20 +02:00
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hibernate-core/src/test/java/org/hibernate/orm/test/inheritance/JoinFetchInheritanceTest.java Normal file
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/*
* 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.inheritance;
import java.util.ArrayList;
import java.util.List;
import org.hibernate.Hibernate;
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.Column;
import jakarta.persistence.DiscriminatorColumn;
import jakarta.persistence.DiscriminatorType;
import jakarta.persistence.DiscriminatorValue;
import jakarta.persistence.Embeddable;
import jakarta.persistence.Embedded;
import jakarta.persistence.Entity;
import jakarta.persistence.FetchType;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.Id;
import jakarta.persistence.Inheritance;
import jakarta.persistence.InheritanceType;
import jakarta.persistence.JoinColumn;
import jakarta.persistence.JoinTable;
import jakarta.persistence.ManyToMany;
import jakarta.persistence.ManyToOne;
import jakarta.persistence.OneToMany;
import static org.assertj.core.api.Assertions.assertThat;
/**
* @author Marco Belladelli
*/
@SessionFactory
@DomainModel( annotatedClasses = {
JoinFetchInheritanceTest.Zoo.class,
JoinFetchInheritanceTest.Animal.class,
JoinFetchInheritanceTest.Cat.class,
JoinFetchInheritanceTest.Kitten.class,
JoinFetchInheritanceTest.CatEmbedded.class,
JoinFetchInheritanceTest.RootEmbeddable.class,
JoinFetchInheritanceTest.KittensEmbeddable.class,
} )
@Jira( "https://hibernate.atlassian.net/browse/HHH-16555" )
public class JoinFetchInheritanceTest {
private final static String CAT = "cat";
private final static String CAT_EMBEDDED = "cat_embedded";
@BeforeAll
public void setUp(SessionFactoryScope scope) {
scope.inTransaction( session -> {
final List<Animal> animals = new ArrayList<>();
final Kitten kitten1 = new Kitten( "kitten_1" );
session.persist( kitten1 );
animals.add( new Cat( 1L, List.of( kitten1 ), kitten1 ) );
animals.add( new Cat( 2L, new ArrayList<>(), kitten1 ) );
final Kitten kitten2 = new Kitten( "kitten_2" );
session.persist( kitten2 );
animals.add( new CatEmbedded( 3L, new KittensEmbeddable( List.of( kitten2 ), kitten2 ) ) );
animals.add( new CatEmbedded( 4L, new KittensEmbeddable( new ArrayList<>(), kitten2 ) ) );
animals.forEach( session::persist );
session.persist( new Zoo( animals ) );
} );
}
@AfterAll
public void tearDown(SessionFactoryScope scope) {
scope.inTransaction( session -> {
session.createQuery( "from Cat", Cat.class )
.getResultList()
.forEach( JoinFetchInheritanceTest::clearKittens );
session.createQuery( "from CatEmbedded", CatEmbedded.class )
.getResultList()
.forEach( JoinFetchInheritanceTest::clearKittens );
} );
scope.inTransaction( session -> {
session.createMutationQuery( "delete from Animal" ).executeUpdate();
session.createMutationQuery( "delete from Kitten" ).executeUpdate();
session.createMutationQuery( "delete from Zoo" ).executeUpdate();
} );
}
@Test
public void testCollection(SessionFactoryScope scope) {
final List<Animal> animals = scope.fromTransaction( session -> session.createQuery(
"select animal from Animal animal " +
"left join fetch animal.kittens",
Animal.class
).getResultList() );
assertCatInitialized( animals, true, true );
}
@Test
public void testPluralJoinCollection(SessionFactoryScope scope) {
final List<Animal> animals = scope.fromTransaction( session -> session.createQuery(
"select animals from Zoo zoo join zoo.animals animals " +
"left join fetch animals.kittens",
Animal.class
).getResultList() );
assertCatInitialized( animals, true, true );
}
@Test
public void testSingle(SessionFactoryScope scope) {
final List<Animal> animals = scope.fromTransaction( session -> session.createQuery(
"select animal from Animal animal " +
"left join fetch animal.singleKitten",
Animal.class
).getResultList() );
assertCatInitialized( animals, false, true );
}
@Test
public void testPluralJoinSingle(SessionFactoryScope scope) {
final List<Animal> animals = scope.fromTransaction( session -> session.createQuery(
"select animals from Zoo zoo join zoo.animals animals " +
"left join fetch animals.singleKitten",
Animal.class
).getResultList() );
assertCatInitialized( animals, false, true );
}
@Test
public void testEmbeddedCollection(SessionFactoryScope scope) {
final List<Animal> animals = scope.fromTransaction( session -> session.createQuery(
"select animal from Animal animal " +
"left join fetch animal.rootEmbeddable.kittensEmbeddable.kittens",
Animal.class
).getResultList() );
assertCatInitialized( animals, true, false );
}
@Test
public void testPluralJoinEmbeddedCollection(SessionFactoryScope scope) {
final List<Animal> animals = scope.fromTransaction( session -> session.createQuery(
"select animals from Zoo zoo join zoo.animals animals " +
"left join fetch animals.rootEmbeddable.kittensEmbeddable.kittens",
Animal.class
).getResultList() );
assertCatInitialized( animals, true, false );
}
@Test
public void testEmbeddedSingle(SessionFactoryScope scope) {
final List<Animal> animals = scope.fromTransaction( session -> session.createQuery(
"select animal from Animal animal " +
"left join fetch animal.rootEmbeddable.kittensEmbeddable.singleKitten",
Animal.class
).getResultList() );
assertCatInitialized( animals, false, false );
}
@Test
public void testPluralJoinEmbeddedSingle(SessionFactoryScope scope) {
final List<Animal> animals = scope.fromTransaction( session -> session.createQuery(
"select animals from Zoo zoo join zoo.animals animals " +
"left join fetch animals.rootEmbeddable.kittensEmbeddable.singleKitten",
Animal.class
).getResultList() );
assertCatInitialized( animals, false, false );
}
/**
* Checks for correct association initialization.
*
* @param animals the animal collection, result of the query
* @param collection {@code true} check collection association, {@code false} check to-one association
* @param simpleInitialized {@code true} the simple (non-embedded) entity associations should be initialized,
* {@code false} the embedded type should be initialized
*/
private static void assertCatInitialized(
List<Animal> animals,
boolean collection,
boolean simpleInitialized) {
assertThat( animals ).hasSize( 4 );
for ( final Animal animal : animals ) {
final KittenContainer kittenContainer = (KittenContainer) animal;
if ( collection ) {
final List<Kitten> kittens = kittenContainer.getKittens();
if ( simpleInitialized && animal.getType().equals( CAT ) ||
!simpleInitialized && animal.getType().equals( CAT_EMBEDDED ) ) {
assertThat( Hibernate.isInitialized( kittens ) ).isTrue();
assertThat( kittens ).hasSizeBetween( 0, 1 );
}
else {
assertThat( Hibernate.isInitialized( kittens ) ).isFalse();
}
}
else {
final Kitten kitten = kittenContainer.getSingleKitten();
if ( simpleInitialized && animal.getType().equals( CAT ) ||
!simpleInitialized && animal.getType().equals( CAT_EMBEDDED ) ) {
assertThat( Hibernate.isInitialized( kitten ) ).isTrue();
assertThat( kitten.getName() ).isEqualTo( simpleInitialized ? "kitten_1" : "kitten_2" );
}
else {
assertThat( Hibernate.isInitialized( kitten ) ).isFalse();
}
}
}
}
private static void clearKittens(KittenContainer container) {
container.getKittens().clear();
}
@Entity( name = "Zoo" )
public static class Zoo {
@Id
@GeneratedValue
private Long id;
@OneToMany
@JoinColumn( name = "zoo_id" )
private List<Animal> animals;
public Zoo() {
}
public Zoo(List<Animal> animals) {
this.animals = animals;
}
public List<Animal> getAnimals() {
return animals;
}
}
@Entity( name = "Animal" )
@Inheritance( strategy = InheritanceType.SINGLE_TABLE )
@DiscriminatorColumn( name = "type", discriminatorType = DiscriminatorType.STRING )
public static class Animal {
@Id
private Long id;
public Animal() {
}
public Animal(Long id) {
this.id = id;
}
@Column( name = "type", insertable = false, updatable = false )
private String type;
public Long getId() {
return id;
}
public String getType() {
return type;
}
}
public interface KittenContainer {
String getType();
List<Kitten> getKittens();
Kitten getSingleKitten();
}
@Entity( name = "Cat" )
@DiscriminatorValue( CAT )
public static class Cat extends Animal implements KittenContainer {
@ManyToMany( fetch = FetchType.LAZY )
@JoinTable( name = "cat_kitten" )
public List<Kitten> kittens = new ArrayList<>();
@ManyToOne( fetch = FetchType.LAZY )
@JoinColumn( name = "kitten_id" )
public Kitten singleKitten;
public Cat() {
}
public Cat(Long id, List<Kitten> kittens, Kitten singleKitten) {
super( id );
this.kittens = kittens;
this.singleKitten = singleKitten;
}
public List<Kitten> getKittens() {
return kittens;
}
public Kitten getSingleKitten() {
return singleKitten;
}
}
@Embeddable
public static class RootEmbeddable {
@Embedded
private KittensEmbeddable kittensEmbeddable;
public RootEmbeddable() {
}
public RootEmbeddable(KittensEmbeddable kittensEmbeddable) {
this.kittensEmbeddable = kittensEmbeddable;
}
public KittensEmbeddable getKittensEmbeddable() {
return kittensEmbeddable;
}
}
@Embeddable
public static class KittensEmbeddable {
@ManyToMany( fetch = FetchType.LAZY )
@JoinTable( name = "cat_embedded_kitten" )
public List<Kitten> kittens = new ArrayList<>();
@ManyToOne( fetch = FetchType.LAZY )
@JoinColumn( name = "embedded_kitten_id" )
public Kitten singleKitten;
public KittensEmbeddable() {
}
public KittensEmbeddable(List<Kitten> kittens, Kitten singleKitten) {
this.kittens = kittens;
this.singleKitten = singleKitten;
}
public List<Kitten> getKittens() {
return kittens;
}
public Kitten getSingleKitten() {
return singleKitten;
}
}
@Entity( name = "CatEmbedded" )
@DiscriminatorValue( CAT_EMBEDDED )
public static class CatEmbedded extends Animal implements KittenContainer {
@Embedded
private RootEmbeddable rootEmbeddable;
public CatEmbedded() {
}
public CatEmbedded(Long id, KittensEmbeddable kittensEmbeddable) {
super( id );
this.rootEmbeddable = new RootEmbeddable( kittensEmbeddable );
}
public List<Kitten> getKittens() {
return rootEmbeddable.getKittensEmbeddable().getKittens();
}
public Kitten getSingleKitten() {
return rootEmbeddable.getKittensEmbeddable().getSingleKitten();
}
}
@Entity( name = "Kitten" )
public static class Kitten {
@Id
@GeneratedValue
private Long id;
private String name;
public Kitten() {
}
public Kitten(String name) {
this.name = name;
}
public String getName() {
return name;
}
}
}