public function SetFilteredDataGridColumnFilter(QDataGridLegacyColumn $col)
 {
     if ($this->_PrimaryKeyNode) {
         $objNode = $this->_PrimaryKeyNode;
     } else {
         $objNode = $this;
     }
     switch ($objNode->strType) {
         case QDatabaseFieldType::Bit:
             //List of true / false / any
             $col->FilterType = QFilterType::ListFilter;
             $col->FilterAddListItem("True", QQ::Equal($objNode, true));
             $col->FilterAddListItem("False", QQ::Equal($objNode, false));
             $col->FilterAddListItem("Set", QQ::IsNotNull($objNode));
             $col->FilterAddListItem("Unset", QQ::IsNull($objNode));
             break;
         case QDatabaseFieldType::Blob:
         case QDatabaseFieldType::Char:
         case QDatabaseFieldType::Time:
         case QDatabaseFieldType::VarChar:
         case QDatabaseFieldType::Date:
         case QDatabaseFieldType::DateTime:
             //LIKE
             $col->FilterType = QFilterType::TextFilter;
             $col->FilterPrefix = '%';
             $col->FilterPostfix = '%';
             $col->Filter = QQ::Like($objNode, null);
             break;
         case QDatabaseFieldType::Float:
         case QDatabaseFieldType::Integer:
             //EQUAL
             $col->FilterType = QFilterType::TextFilter;
             $col->Filter = QQ::Equal($objNode, null);
             break;
         case QType::Object:
         case QType::Resource:
         default:
             //this node points to a class, there's no way to know what to filter on
             $col->FilterType = QFilterType::None;
             $col->ClearFilter();
             break;
     }
 }