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HHH-17413 Add test for issue

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Marco Belladelli 2023-12-04 13:52:22 +01:00 committed by Christian Beikov
parent ef155c22c1
commit 3d61b9658c
1 changed files with 214 additions and 0 deletions
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hibernate-core/src/test/java/org/hibernate/orm/test/inheritance/discriminator/CaseStatementWithTypeTest.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.discriminator;
import java.util.List;
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.Id;
import jakarta.persistence.Inheritance;
import jakarta.persistence.InheritanceType;
import jakarta.persistence.Tuple;
import static org.assertj.core.api.Assertions.assertThat;
/**
* @author Marco Belladelli
*/
@DomainModel( annotatedClasses = {
CaseStatementWithTypeTest.SingleParent.class,
CaseStatementWithTypeTest.SingleChildA.class,
CaseStatementWithTypeTest.SingleChildB.class,
CaseStatementWithTypeTest.JoinedParent.class,
CaseStatementWithTypeTest.JoinedChildA.class,
CaseStatementWithTypeTest.JoinedChildB.class,
CaseStatementWithTypeTest.UnionParent.class,
CaseStatementWithTypeTest.UnionChildA.class,
CaseStatementWithTypeTest.UnionChildB.class,
} )
@SessionFactory
@Jira( "https://hibernate.atlassian.net/browse/HHH-17413" )
public class CaseStatementWithTypeTest {
@BeforeAll
public void setUp(SessionFactoryScope scope) {
scope.inTransaction( session -> {
session.persist( new SingleChildA( 1L ) );
session.persist( new SingleChildB( 2L ) );
session.persist( new JoinedChildA( 1L ) );
session.persist( new JoinedChildB( 2L ) );
session.persist( new UnionChildA( 1L ) );
session.persist( new UnionChildB( 2L ) );
} );
}
@AfterAll
public void tearDown(SessionFactoryScope scope) {
scope.inTransaction( session -> {
session.createMutationQuery( "delete from SingleParent" ).executeUpdate();
session.createMutationQuery( "delete from JoinedParent" ).executeUpdate();
session.createMutationQuery( "delete from UnionParent" ).executeUpdate();
} );
}
@Test
public void testSingleTableInheritance(SessionFactoryScope scope) {
executeQuery( scope, SingleParent.class, SingleChildA.class, SingleChildB.class, false );
executeQuery( scope, SingleParent.class, SingleChildA.class, SingleChildB.class, true );
}
@Test
public void testJoinedInheritance(SessionFactoryScope scope) {
executeQuery( scope, JoinedParent.class, JoinedChildA.class, JoinedChildB.class, false );
executeQuery( scope, JoinedParent.class, JoinedChildA.class, JoinedChildB.class, true );
}
@Test
public void testTablePerClassInheritance(SessionFactoryScope scope) {
executeQuery( scope, UnionParent.class, UnionChildA.class, UnionChildB.class, false );
executeQuery( scope, UnionParent.class, UnionChildA.class, UnionChildB.class, true );
}
private <T> void executeQuery(
SessionFactoryScope scope,
Class<T> parent,
Class<? extends T> childA,
Class<? extends T> childB,
boolean orderBy) {
scope.inTransaction( session -> {
final StringBuilder sb = new StringBuilder( "select p.id" );
final String caseExpression = String.format(
"case type(p) when %s then 'A' when %s then 'B' else null end",
childA.getSimpleName(),
childB.getSimpleName()
);
if ( orderBy ) {
sb.append( String.format( " from %s p order by %s", parent.getSimpleName(), caseExpression ) );
}
else {
sb.append( String.format( ", %s from %s p", caseExpression, parent.getSimpleName() ) );
}
final List<Tuple> resultList = session.createQuery( sb.toString(), Tuple.class ).getResultList();
assertThat( resultList ).hasSize( 2 );
if ( orderBy ) {
assertThat( resultList.stream().map( t -> t.get( 0, Long.class ) ) ).containsExactly( 1L, 2L );
}
else {
assertThat( resultList.stream().map( t -> t.get( 1, String.class ) ) ).contains( "A", "B" );
}
} );
}
@Entity( name = "SingleParent" )
@Inheritance( strategy = InheritanceType.SINGLE_TABLE )
public static class SingleParent {
@Id
private Long id;
public SingleParent() {
}
public SingleParent(Long id) {
this.id = id;
}
}
@Entity( name = "SingleChildA" )
public static class SingleChildA extends SingleParent {
public SingleChildA() {
}
public SingleChildA(Long id) {
super( id );
}
}
@Entity( name = "SingleChildB" )
public static class SingleChildB extends SingleParent {
public SingleChildB() {
}
public SingleChildB(Long id) {
super( id );
}
}
@Entity( name = "JoinedParent" )
@Inheritance( strategy = InheritanceType.JOINED )
public static class JoinedParent {
@Id
private Long id;
public JoinedParent() {
}
public JoinedParent(Long id) {
this.id = id;
}
}
@Entity( name = "JoinedChildA" )
public static class JoinedChildA extends JoinedParent {
public JoinedChildA() {
}
public JoinedChildA(Long id) {
super( id );
}
}
@Entity( name = "JoinedChildB" )
public static class JoinedChildB extends JoinedParent {
public JoinedChildB() {
}
public JoinedChildB(Long id) {
super( id );
}
}
@Entity( name = "UnionParent" )
@Inheritance( strategy = InheritanceType.TABLE_PER_CLASS )
public static class UnionParent {
@Id
private Long id;
public UnionParent() {
}
public UnionParent(Long id) {
this.id = id;
}
}
@Entity( name = "UnionChildA" )
public static class UnionChildA extends UnionParent {
public UnionChildA() {
}
public UnionChildA(Long id) {
super( id );
}
}
@Entity( name = "UnionChildB" )
public static class UnionChildB extends UnionParent {
public UnionChildB() {
}
public UnionChildB(Long id) {
super( id );
}
}
}