/**
* Returns a flat count of all categories, used for paging purposes. Must use the same visibility rules as the getTree method.
*
* @return int
*/
public function countAll()
{
// isc customer group management does not flag all child categories as not-accessible when you untick a parent category from a customer group access list, so we can't simply count(*) to get a count of all truly visible categories
// use the nested set query to do a select, but discard the results and then use a FOUND_ROWS call afterwards to get the true count of all visible categories
$set = new ISC_NESTEDSET_CATEGORIES();
$sql = $set->generateGetTreeSql(array('categoryid'), ISC_NESTEDSET_START_ROOT, $this->getMaximumDepth(), null, null, true, $this->_getRestrictions());
$result = $GLOBALS['ISC_CLASS_DB']->Query($sql);
if (!$result) {
return false;
}
$result = $GLOBALS['ISC_CLASS_DB']->Query("SELECT FOUND_ROWS()");
return $GLOBALS['ISC_CLASS_DB']->FetchOne($result);
}
/**
* Get an array all of the child categories of the current category.
*
* @return array a list of all of the child categories of the current category.
*/
public function GetChildCategories()
{
$categoryId = $this->GetCategoryId();
$childCats = array();
$set = new ISC_NESTEDSET_CATEGORIES();
// use a manual query instead of getTree as it's less resource intensive since we only need an array of category ids, not array of result rows
// nested set results will include the starting node, the HAVING restriction array here will drop it from the final results
$sql = $set->generateGetTreeSql(array('categoryid'), $categoryId, ISC_NESTEDSET_DEPTH_ALL, null, null, true, array('`node`.`categoryid` != ' . $categoryId));
$result = $GLOBALS['ISC_CLASS_DB']->Query($sql);
while ($row = $GLOBALS['ISC_CLASS_DB']->Fetch($result)) {
$childCats[] = $row['categoryid'];
}
return $childCats;
}