preQuery() and getConnection() - multiple connections

When preQuery() hook is invoked, any calls to $this->getConnection() in preQuery() body is useless because it always returns the current connection instead of the connection bound with component that is being queried.

I am using this hook to switch the connection to connection to master host for schema of the queried component , but cannot do this because the is no way to obtain information about which component this query uses and what would be bounded connection.
The connection is propely set by Doctrine but after the preQuery() hook is invoked, but when this finally happens i have no control over the execution of the query.