public function __construct()
 {
     parent::_construct();
     $this->setModel('adminhtml/report_item');
     $this->_resource = Mage::getResourceModel('emailreport/aggregated');
     $this->setConnection($this->getResource()->getReadConnection());
     $this->_applyFilters = false;
 }
 /**
  * Initialize custom resource model
  *
  */
 public function __construct()
 {
     parent::_construct();
     $this->setModel('adminhtml/report_item');
     $this->_resource = Mage::getResourceModel('sales/report')->init(Mage_Reports_Model_Resource_Report_Product_Viewed::AGGREGATION_DAILY);
     $this->setConnection($this->getResource()->getReadConnection());
     // overwrite default behaviour
     $this->_applyFilters = false;
 }