HHH-15054 Reproducer for cascade-delete NPE on entity with @OneToMany(mappedBy = ...)

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Yoann Rodière 2022-01-27 17:24:43 +01:00 committed by Christian Beikov
parent 842ebd0e7e
commit 62b4d249ee
1 changed files with 125 additions and 0 deletions

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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.ops;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import java.util.ArrayList;
import java.util.List;
import org.hibernate.annotations.Cascade;
import org.hibernate.annotations.CascadeType;
import org.hibernate.stat.spi.StatisticsImplementor;
import org.hibernate.testing.orm.junit.DomainModel;
import org.hibernate.testing.orm.junit.SessionFactory;
import org.hibernate.testing.orm.junit.SessionFactoryScope;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.Test;
import jakarta.persistence.Entity;
import jakarta.persistence.FetchType;
import jakarta.persistence.Id;
import jakarta.persistence.ManyToOne;
import jakarta.persistence.OneToMany;
@SessionFactory(generateStatistics = true)
@DomainModel(annotatedClasses = {
OneToManyMappedByCascadeDeleteTest.Parent.class,
OneToManyMappedByCascadeDeleteTest.Child.class
})
public class OneToManyMappedByCascadeDeleteTest {
@AfterEach
public void cleanup(SessionFactoryScope scope) {
scope.inTransaction( s -> {
s.createMutationQuery( "delete from child" ).executeUpdate();
s.createMutationQuery( "delete from parent" ).executeUpdate();
} );
}
@Test
public void testRemoveCascadeDelete(SessionFactoryScope scope) {
scope.inTransaction( s -> {
Parent parent = new Parent();
parent.setId( 1 );
s.persist( parent );
Child child = new Child();
child.setId( 2 );
child.setParent( parent );
s.persist( child );
} );
getStatistics( scope ).clear();
scope.inTransaction( s -> {
Parent parent = s.get( Parent.class, 1 );
s.remove( parent );
} );
int deletes = (int) getStatistics( scope ).getEntityDeleteCount();
assertThat( "unexpected delete counts", deletes, is( 2 ) );
}
private StatisticsImplementor getStatistics(SessionFactoryScope scope) {
return scope.getSessionFactory().getStatistics();
}
@Entity(name = "parent")
public static class Parent {
@Id
private Integer id;
@OneToMany(targetEntity = Child.class, mappedBy = "parent", fetch = FetchType.LAZY)
@Cascade(CascadeType.DELETE)
private List<Child> children = new ArrayList<>();
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public List<Child> getChildren() {
return children;
}
public void setChildren(List<Child> children) {
this.children = children;
}
}
@Entity(name = "child")
public static class Child {
@Id
private Integer id;
@ManyToOne(targetEntity = Parent.class, fetch = FetchType.LAZY)
private Parent parent;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Parent getParent() {
return parent;
}
public void setParent(Parent parent) {
this.parent = parent;
}
}
}