/**
* Counts the number of items resulting from a given database query.
*
* @param JDatabaseQuery $query Query whose results should be counted.
*
* @throws Exception
* @return void
*/
public function countItems($query)
{
$cloned = clone $query;
$cloned->clear('select')->select('COUNT(*)');
$this->db->setQuery($cloned);
$count = $this->db->loadResult();
$offset = isset($this->list['offset']) ? $this->list['offset'] : $this->getState()->get('list.' . $this->prefix . '.offset', 0);
$offset = $this->app->input->getInt('limitstart', $offset);
$this->getState()->set('list.' . $this->prefix . 'offset', $offset);
$defaultLimit = $this->app->get('list_limit');
$limit = isset($this->list['limit']) ? $this->list['limit'] : $this->getState()->get('list.' . $this->prefix . '.limit', $defaultLimit);
$this->pagination = new JPagination($count, $offset, $limit, '', $this->app);
if ($query instanceof JDatabaseQueryLimitable) {
$query->setLimit($limit, $offset);
}
}
