/**
* Remove all expired tokens from the database.
*
* @return void
* @access public
*/
public function removeExpired()
{
$cleaner = new Oai_resumption();
$now = date('Y-m-d H:i:s');
$cleaner->whereAdd("\"expires\" <= '{$now}'");
$cleaner->delete(true);
}
/**
* Generate a resumption token to continue the current operation.
*
* @param array $params Current operational parameters.
* @param int $currentCursor Current cursor position in search results.
* @param int $listSize Total size of search results.
*
* @return string XML details about token.
* @access protected
*/
protected function saveResumptionToken($params, $currentCursor, $listSize)
{
global $interface;
// Save the old cursor position to the template before overwriting it for
// storage in the database!
$interface->assign('oldCursor', $params['cursor']);
$params['cursor'] = $currentCursor;
// Save everything to the database:
$search = new Oai_resumption();
$search->saveParams($params);
$expire = time() + 24 * 60 * 60;
$search->expires = date('Y-m-d H:i:s', $expire);
$token = $search->insert();
// Send remaining details to the template:
$interface->assign('resumptionToken', $token);
$interface->assign('tokenExpiration', date($this->iso8601, $expire));
$interface->assign('listSize', $listSize);
// Build the XML:
return $interface->fetch('OAI/resumption.tpl');
}
