private function getRevisionId()
{
if ($this->revisionId === null) {
$date = date_create("now")->format($this->platform->getDateTimeFormatString());
if ($this->config->getCurrentUser() != null) {
$userId = $this->config->getCurrentUser()->getId();
} else {
$userId = null;
}
$this->conn->insert($this->config->getRevisionTableName(), array('timestamp' => $date, 'user_id' => $userId, 'note' => $this->config->getNote(), 'ipaddress' => $this->config->getIpAddress()));
$sequenceName = $this->platform->supportsSequences() ? 'REVISIONS_ID_SEQ' : null;
$this->revisionId = $this->conn->lastInsertId($sequenceName);
}
return $this->revisionId;
}