Dive into the configuration of DoctrineBundle and you will find what you're looking for.
There is a parameter doctrine.dbal.connection_factory.class
which holds the ConnectionFactory classname.
This parameter is used to define the service doctrine.dbal.connection
which receives the argument %doctrine.dbal.connection_factory.types%
- a parameter array aka the typeConfigs
.
Now just search your vendor dir for doctrine.dbal.connection_factory.types
and you will find:
$container->setParameter('doctrine.dbal.connection_factory.types', $config['types']);
I leave the final step of finding types
in DoctrineBundle's configuration reference to you...
tip: it's somewhere around doctrine.dbal.types
with a little description :)