I tried to create a minimal entity mapping to reproduce this issue. Changing any {{FetchMode}} configuration in the mapping would "avoid" the issue. Also disabling batch fetch would "avoid" the issue.
This is the minimal mapping scenario that I was able to create from my real case:
{code:java}@Entity
@Table(name = "ENTITY_A")
public class EntityA {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "ID")
Integer id;
@JoinColumn(name = "ENTITY_B")
@ManyToOne
EntityB entityB;
}
@Entity
@Table(name = "ENTITY_B")
public class EntityB {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "ID")
Integer id;
@OneToMany(mappedBy = "entityB")
@Fetch(FetchMode.SUBSELECT)
List<EntityC> listOfEntitiesC = new ArrayList<>();
@JoinColumn(name = "ENTITY_D")
@ManyToOne
EntityD entityD;
}
@Entity
@Table(name = "ENTITY_C")
public class EntityC {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "ID")
Integer id;
@JoinColumn(name = "ENTITY_B")
@ManyToOne
EntityB entityB;
}
@Entity
@Table(name = "ENTITY_D")
public class EntityD {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "ID")
Integer id;
@JoinColumn(name = "ENTITY_E")
@ManyToOne
@Fetch(FetchMode.SELECT)
EntityE entityE;
@JoinColumn(name = "OPENING_B")
@ManyToOne
EntityB openingB;
@JoinColumn(name = "CLOSING_B")
@ManyToOne
EntityB closingB;
@OneToMany(mappedBy = "entityD")
List<EntityB> listOfEntitiesB = new ArrayList<>();
}
@Entity
@Table(name = "ENTITY_E")
public class EntityE {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "ID")
Integer id;
@JoinColumn(name = "ENTITY_D")
@ManyToOne
EntityD entityD;
}{code}
{code:java} @Override
protected void configure(Configuration configuration) {
super.configure(configuration);
configuration.setProperty(AvailableSettings.SHOW_SQL, Boolean.TRUE.toString());
configuration.setProperty(AvailableSettings.FORMAT_SQL, Boolean.TRUE.toString());
configuration.setProperty(AvailableSettings.DEFAULT_BATCH_FETCH_SIZE, "10");
}
@Test
public void hhhXXXXTest() throws Exception {
try (Session s = openSession()) {
Transaction tx = s.beginTransaction();
EntityA entityA = new EntityA();
EntityB entityB = new EntityB();
EntityC entityC = new EntityC();
EntityD entityD = new EntityD();
EntityE entityE = new EntityE();
entityA.entityB = entityB;
entityB.entityD = entityD;
entityB.listOfEntitiesC.add(entityC);
entityC.entityB = entityB;
entityD.entityE = entityE;
entityD.listOfEntitiesB.add(entityB);
entityD.openingB = entityB;
entityE.entityD = entityD;
s.persist(entityA);
s.persist(entityB);
s.persist(entityC);
s.persist(entityD);
s.persist(entityE);
tx.commit();
}
try (Session s = openSession()) {
List<EntityE> entitiesE = s.createQuery("select e from EntityE e", EntityE.class).getResultList();
assertThat(entitiesE).hasSize(1);
List<EntityA> entitiesA = s.createQuery("select a from EntityA a", EntityA.class).getResultList();
assertThat(entitiesA).hasSize(1);
assertThat(entitiesA.get(0).entityB.listOfEntitiesC).hasSize(1);
}
}{code}
{noformat}java.lang.AssertionError:
Expected size:<1> but was:<0> in:
<[]>
at org.hibernate.bugs.ORMUnitTestCase.hhhXXXXTest(ORMUnitTestCase.java:97)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.hibernate.testing.junit4.ExtendedFrameworkMethod.invokeExplosively(ExtendedFrameworkMethod.java:45)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:299)
at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:293)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.lang.Thread.run(Thread.java:833){noformat}
The generated query to load {{EntityE.listOfEntitiesC}} is wrong since {{c1_0.ID}} is the wrong path to be used
{code:sql}Hibernate:
select
l1_0.ENTITY_B,
l1_0.ID
from
ENTITY_C l1_0
where
l1_0.ENTITY_B in(select
c1_0.ID
from
ENTITY_D e1_0
left join
ENTITY_B c1_0
on c1_0.ID=e1_0.CLOSING_B
left join
ENTITY_D e2_0
on e2_0.ID=c1_0.ENTITY_D
left join
ENTITY_B o1_0
on o1_0.ID=e2_0.OPENING_B
left join
ENTITY_B o2_0
on o2_0.ID=e1_0.OPENING_B
left join
ENTITY_D e6_0
on e6_0.ID=o2_0.ENTITY_D
left join
ENTITY_B c3_0
on c3_0.ID=e6_0.CLOSING_B
where
array_contains(?,e1_0.ID)){code}
A failing test scenario is to be attached and also available at [https://github.com/ratoaq2/HHH-16569|https://github.com/ratoaq2/HHH-16569|smart-link] |
|
