@xabbuh How to implement this?

Having a ManipulationInterface with concrete implementations for Remove/Update/Add and ManipulationCollectionInterface and a new method "executeBatch" on EntryManagerInterface ?

Without having deep knowledge in Symfony I'D test this:

Instead of invoking LDAP::create() I'd create the LDAP-Instance by calling new LDAP($adapter) where $adapter = new Symfony\Component\Ldap\Adapter\ExtLdap\Adapter($config). This adapter contains the method Adapter::getConnection() which should return a connection-object that itself has a getResource-method.

So the complete code might look something like this:

$adapter = new  Symfony\Component\Ldap\Adapter\ExtLdap\Adapter($config)
$ldap = new Ldap($adapter);
$ldap->bind();
$resource = $adapter->getConnection()->getResource();

Then you can use $resource for the ext-ldap calls.

I'm not sure whether the middle two lines are needed at all…

But as I said, I have no deep symfony experience, so perhaps someone else might want to chime in here to tell you the "proper" way to do it 😉