/**
  * Flush local cache
  */
 protected function flushCache()
 {
     SpecificPrice::$_specificPriceCache = array();
     SpecificPrice::$_filterOutCache = array();
     SpecificPrice::$_cache_priorities = array();
     SpecificPrice::$_no_specific_values = array();
     Product::flushPriceCache();
 }
 public function delete()
 {
     if (parent::delete()) {
         // Flush cache when we deletind a new specific price
         SpecificPrice::$_specificPriceCache = array();
         Product::flushPriceCache();
         // Refresh cache of feature detachable
         Configuration::updateGlobalValue('PS_SPECIFIC_PRICE_FEATURE_ACTIVE', SpecificPrice::isCurrentlyUsed($this->def['table']));
         return true;
     }
     return false;
 }