/**
* Make a request option object based on the given parameters, and
* return NULL if no such object is required. The parameter defines
* if the limit should be taken into account, which is not always desired
* (especially if results are to be cached for future use).
*
* @param boolean $useLimit
*
* @return SMWRequestOptions or null
*/
protected function getRequestOptions($useLimit = true)
{
$limit = $useLimit ? $this->mPrintRequest->getParameter('limit') : false;
$order = trim($this->mPrintRequest->getParameter('order'));
// Important: use "!=" for order, since trim() above does never return "false", use "!==" for limit since "0" is meaningful here.
if ($limit !== false || $order != false) {
$options = new SMWRequestOptions();
if ($limit !== false) {
$options->limit = trim($limit);
}
if ($order == 'descending' || $order == 'reverse' || $order == 'desc') {
$options->sort = true;
$options->ascending = false;
} elseif ($order == 'ascending' || $order == 'asc') {
$options->sort = true;
$options->ascending = true;
}
} else {
$options = null;
}
return $options;
}
