Named injection for multiple database connection

[koriym]

For multiple database connection, Set qualifer in 2nd parameter in DbalModule.

$this->install(new DbalModule('driver=pdo_sqlite&memory=true', 'log_db');

Use qualifer in @Inject.

/**
 * @Inject
 * @Named("log_db")
 */
public function setLogDb(Connection $logDb)
{
    $this->logDb = $logDb;
}