Work with different schemas in Doctrine - oracle

Question

I am using doctrine2 with oracle. There are several schemas schema1 and schema2. When I create a form with the following content
// ....
public function buildForm(FormBuilderInterface $builder, array $options)
{
// ....
$builder
->add('userPartner', 'entity', array(
'class' => 'SoftclubTopbyBundle:Party',
'property' => 'legalName',
'placeholder' => '',
'multiple' => true,
))
;
// ....
}
//...
the symfony throws me an exception:
MappingException in MappingException.php line 37:
The class 'Softclub\TopbyBundle\Entity\Nsi\NsiChainStore' was not found in
the chain configured namespaces Softclub\TopbyBundle\Entity\Topby
I have the following setting in the config.yml
entity_managers:
default:
connection: default
mappings:
SoftclubTopbyBundle: { type: yml, dir: Resources/config/doctrine/topby, prefix: Softclub\TopbyBundle\Entity\Topby }
nsi:
connection: nsi
mappings:
SoftclubTopbyBundle: { type: yml, dir: Resources/config/doctrine/nsi, prefix: Softclub\TopbyBundle\Entity\Nsi }
and also the following relationship between the two entities
Softclub\TopbyBundle\Entity\Topby\Party:
manyToOne:
chainStore:
targetEntity: Softclub\TopbyBundle\Entity\Nsi\NsiChainStore
cascade: { }
mappedBy: null
inversedBy: null
joinColumns:
CHAIN_STORE_ID:
referencedColumnName: ID
orphanRemoval: false
what can I do wrong?

Answer 1

Thank you all for the answers. As Matteo said, the entities were placed in a separate bundle. The problem was solved as follows
default:
connection: default
mappings:
SoftclubTopbyBundle: ~
SoftclubNsiBundle: ~
# for generate entities
topby:
connection: default
mappings:
SoftclubTopbyBundle: ~
nsi:
connection: nsi
mappings:
SoftclubNsiBundle: ~

Answer 2

You can not make doctrine relations over different connections. You can use event listener for that purpose.
For instance, one entity (say Note) has some property which is reference to another entity (say User) belonging to another entity manager (connection). The Note entity persists User's ID as foreign key.
Event listener is used to instantiate User object by using it's ID whenever the Note object is loaded (postLoad event).
http://symfony.com/doc/current/cookbook/doctrine/event_listeners_subscribers.html
Doctrine events:
http://doctrine-orm.readthedocs.org/en/latest/reference/events.html#lifecycle-events
Regarding the form, put option entity manager with 'nsi' if 'userPartner' is mapped to that connection.
'em'=>'nsi'
Have not worked with Oracle, hope this helps.