return child evaluators if exist concode_field_sep Object evaluation concode_elem_sep int version concode_elem_sep ObjectInspector outputOI concode_elem_sep T expr concode_field_sep Object _evaluate concode_elem_sep boolean isDeterministic concode_elem_sep ExprNodeEvaluator[] getChildren concode_elem_sep ObjectInspector getOutputOI concode_elem_sep String toString concode_elem_sep ObjectInspector initialize concode_elem_sep Object evaluate concode_elem_sep Object evaluate concode_elem_sep boolean isStateful
T function ( ) { return expr ; }