doctrine / DoctrineBundle

            throw new InvalidArgumentException('Sharding and master-slave connection cannot be used together');

        }

        if (!empty($options['slaves'])) {

            $nonRewrittenKeys = array(

                'driver' => true, 'driverOptions' => true, 'driverClass' => true,

                'wrapperClass' => true, 'keepSlave' => true, 'shardChoser' => true,

                'platform' => true, 'slaves' => true, 'master' => true, 'shards' => true,

                'serverVersion' => true,

                // included by safety but should have been unset already

                'logging' => true, 'profiling' => true, 'mapping_types' => true, 'platform_service' => true,

            );

            foreach ($options as $key => $value) {

                if (isset($nonRewrittenKeys[$key])) {

                    continue;

                }

                $options['master'][$key] = $value;

                unset($options[$key]);

            }

            if (empty($options['wrapperClass'])) {

                // Change the wrapper class only if the user does not already forced using a custom one.

                $options['wrapperClass'] = 'Doctrine\\DBAL\\Connections\\MasterSlaveConnection';

            }

        } else {

            unset($options['slaves']);

        }

        if (!empty($options['shards'])) {

            $nonRewrittenKeys = array(

            unset($options['slaves']);

        }

        if (!empty($options['shards'])) {

            $nonRewrittenKeys = array(

                'driver' => true, 'driverOptions' => true, 'driverClass' => true,

                'wrapperClass' => true, 'keepSlave' => true, 'shardChoser' => true,

                'platform' => true, 'slaves' => true, 'global' => true, 'shards' => true,

                // included by safety but should have been unset already

                'logging' => true, 'profiling' => true, 'mapping_types' => true, 'platform_service' => true,

            );

            foreach ($options as $key => $value) {

                if (isset($nonRewrittenKeys[$key])) {

                    continue;

                }

                $options['global'][$key] = $value;

                unset($options[$key]);

            }

            if (empty($options['wrapperClass'])) {

                // Change the wrapper class only if the user does not already forced using a custom one.

                $options['wrapperClass'] = 'Doctrine\\DBAL\\Sharding\\PoolingShardConnection';

            }

        } else {

            unset($options['shards']);

        }

        return $options;

    }