public static string PlanableDefectFilter() { lock (_lock) { if (_planwhere != null) { return(_planwhere); } List <int> pl = DefectSeverity.EnumPlanable(); if (pl.Count > 0) { _planwhere = string.Format(" AND ({0} in ({1}))", Defect._Seve, string.Join(",", pl)); } return(_planwhere); } }