/**
  * fetchSectionItems - returns gets array of items from category from specyfic namespace.
  * @param $sCategoryDBKey int category namespace
  * @param $mNamespace mixed: int namespace or array of int for category query
  * @return array
  */
 protected function fetchSectionItems($mNamespace = NS_MAIN, $negative = false)
 {
     $sCategoryDBKey = $this->categoryTitle->getDBkey();
     // Check if page is a redirect
     if ($this->categoryTitle->isRedirect()) {
         $oTmpArticle = new Article($this->categoryTitle);
         if (!is_null($oTmpArticle)) {
             $rdTitle = $oTmpArticle->getRedirectTarget();
             if (!is_null($rdTitle) && $rdTitle->getNamespace() == NS_CATEGORY) {
                 $sCategoryDBKey = $rdTitle->getDBkey();
             }
         }
     }
     if (!is_array($mNamespace)) {
         $mNamespace = (int) $mNamespace;
     } else {
         $mNamespace = implode(',', $mNamespace);
     }
     switch ($this->getSortType()) {
         case 'mostvisited':
             $res = CategoryDataService::getMostVisited($sCategoryDBKey, $mNamespace, false, $negative);
             //FB#26239 - fall back to alphabetical order if most visited data is empty
             return !empty($res) ? $res : CategoryDataService::getAlphabetical($sCategoryDBKey, $mNamespace, $negative);
         case 'alphabetical':
             return CategoryDataService::getAlphabetical($sCategoryDBKey, $mNamespace, $negative);
         case 'recentedits':
             return CategoryDataService::getRecentlyEdited($sCategoryDBKey, $mNamespace, $negative);
     }
     return array();
 }