/**
* @param string $q
* @param int $fetchStyle
* @return PDOStatement|false
*/
private function query($q, $fetchStyle = PDO::FETCH_ASSOC)
{
$this->lastQuery = $q;
if (!$this->isDebug()) {
$error = null;
$stmt = null;
try {
$connection = parent::getLink($this->config, $this->schema);
$stmt = $connection->query($q, $fetchStyle);
if ($stmt === false) {
$error = new PDOException('query failed');
}
} catch (PDOException $e) {
$error = $e;
}
$this->error = $error;
if ($error === null) {
return $stmt;
}
}
return false;
}