[hibernate-issues] [Hibernate-JIRA] Created: (HHH-7167) The new natural id code introduced in 4.1.1 depends on the order the entity persisters are loaded which leads to fatal errors
The new natural id code introduced in 4.1.1 depends on the order the entity persisters are
loaded which leads to fatal errors
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Key: HHH-7167
URL: https://hibernate.onjira.com/browse/HHH-7167
Project: Hibernate ORM
Issue Type: Bug
Components: core
Affects Versions: 4.1.1
Reporter: Guillaume Smet
Priority: Critical
Hi,
After upgrade to 4.1.1, our application doesn't work anymore because the
sqlEntityIdByNaturalIdString field of the entity persister is null while it shouldn't
be.
The problem is that the new code requires the entityPersisters to be postInstantiate()d in
a specific order namely the root entity persister should be initialized before the child
classes (which is not guaranteed at all and is not the case in our application because of
the way our classes are organized).
In our case, the entities are loaded in this order (pseudo code):
{code}
@Entity
ConcreteClass extends AbstractClass {
}
@Entity
AbstractClass {
@Id, @NaturalId
}
{code}
Which is a problem because of the way
AbstractEntityPersister.generateEntityIdByNaturalIdSql() now works:
{code}
private String generateEntityIdByNaturalIdSql() {
EntityPersister rootPersister = getFactory().getEntityPersister( getRootEntityName() );
if ( rootPersister != this ) {
if ( rootPersister instanceof AbstractEntityPersister ) {
return ( (AbstractEntityPersister) rootPersister ).sqlEntityIdByNaturalIdString;
}
}
{code}
-> if the root persister is not postInstantiate()d yet (which is our case here),
sqlEntityIdByNaturalIdString is null and so is the one of the concrete class leading to
fatal error when trying to execute queries using the natural id.
In this case, we should force the postInstantiation of the root entity persister before
using sqlEntityIdByNaturalIdString (or we should at least generate its
sqlEntityIdByNaturalIdString).
Feel free to ping me if you need any further information.
--
Guillaume
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