User Exit Formula Variable - to calculate #days of any month

Question

Hello Team,
I need a column in my report layout which shows the #days of any month entered by the user. User entry 01.2014 to 03.2014 report should have 31 28 & 31 according to the Calendar month in the rows.
To achieve this I'm using a user exit formula variable in my local calculation. An Optional Interval User Entry variable on CALMONTH is also put in at the filter section.
I created a CLASS with 2 methods CONSTRUCTOR( vNam = 'ZC2C_DSONWDAYS') & GET_VALUES. We may also use FM /OSP/GET_DAYS_IN_MONTH but i need the code because I failed terribly.
GET_VALUES method code:
if i_step = 2.
   DATA: wa like line of i_t_var_range[].
   DATA: L_V_INDICATOR TYPE SCAL-INDICATOR.
   data: begin of ccrange ,
           iobjnm(30) type c,
             sign(1),
              opt(2),
              low(7) type c,
             high(7) type c,
         end of ccrange.
  data: l_s_range type rrrangesid,
        no_of_wrkdays type i value 0,
        startdate     type d,
        enddate       type d,
        startmth(2)   type c,
        endmth(2)     type c,
        startyr(4)    type c,
        endyr(4)      type c,
        endday(2)     type c,
        leapyear      type i value 0,
        dayofmth      type syst-datum.
DATA:  day           type SCAL-INDICATOR.
  loop at i_t_var_range into wa.
    if wa-iobjnm = '0CALMONTH'.
       ccrange-sign = wa-sign.
       ccrange-opt = wa-opt.
       ccrange-low = wa-low.
       ccrange-high = wa-high.
       exit.
    endif.
  endloop.
  startyr  = ccrange-low+0(4).
  startmth = ccrange-low+4(2).
  endyr    = ccrange-high+0(4).
  endmth   = ccrange-high+4(2).
  concatenate startyr startmth '01' into startdate.
* determine last day of the end month
  if endmth = '02'.
     leapyear = endyr mod 4.
     if leapyear = 0.
        endday = '29'.
     else.
        endday = '28'.
     endif.
  elseif ( endmth = '04' or endmth = '06' or endmth = '09' or endmth = '11' ).
       endday = '30'.
  else.
       endday = '31'.
  endif.
  concatenate endyr endmth endday into enddate.
  dayofmth = startdate.
IF startmth <= endmth.
   startmth = startmth+1.
ENDIF.
* do it for all days in space of time
   WHILE dayofmth <= enddate.     "to date
     CALL FUNCTION '/OSP/GET_DAYS_IN_MONTH'
     EXPORTING
       input = startmth
     IMPORTING
       output = no_of_wrkdays.
       CLEAR l_s_range.
       l_s_range-sign = 'I'.
       l_s_range-opt = 'EQ'.
       l_s_range-low = no_of_wrkdays.
   append l_s_range to e_t_range.
       startmth = startmth + 1.
       CONCATENATE startyr startmth '01' into dayofmth.
    ENDWHILE.
endif.
endmethod.

Answer 1

Hi Vasavi,
1)  Create a FV to calculate no.of days  like below, with calmonth in ref characteristics :
2. If you see number of days is an attribute of calmonth. Please enter that as below :
3. Create a formula with above variable and make sure calmonth is added in the row.
Its giving output like this :
I hope this will help you.
Thanks,