/**
* Fetch Zend statement instance
*
* @param \Zend_Db_Statement_Interface|\Magento\Framework\DB\Select|string $query
* @param AdapterInterface $connection
* @return \Zend_Db_Statement_Interface
* @throws LocalizedException
*/
protected function _getStatement($query, AdapterInterface $connection = null)
{
if ($query instanceof \Zend_Db_Statement_Interface) {
return $query;
}
if ($query instanceof \Zend_Db_Select) {
return $query->query();
}
if (is_string($query)) {
if (!$connection instanceof AdapterInterface) {
throw new LocalizedException(new Phrase('Invalid connection'));
}
return $connection->query($query);
}
throw new LocalizedException(new Phrase('Invalid query'));
}
