Replace amount in OOPS ALV

Question

hi all,
i am using OOPS ALV to display the report. requirment is that i need to dispaly * when the value of the amount coloumn is 0.
i changed that coloumn to character and displayed as "*", but now i am not able to used the summing option given by ALV.
so is there a way to put "*" insted of 0 without changing the data type of the coloumn ?

Answer 1

What you can do is create a custom conversion exit for the quantity field...they ALV sum will work....I have used this technique with FM based ALV, it will definitely work OOALV.
1) Create 2 FM :CONVERSION_EXIT_ZZERO_INPUT & CONVERSION_EXIT_ZZERO_OUTPUT.
2) The input should have a code like this..
FUNCTION CONVERSION_EXIT_ZQUAN_OUTPUT.
*"*"Local Interface:
*"  IMPORTING
*"     REFERENCE(INPUT)
*"  EXPORTING
*"     REFERENCE(OUTPUT)
if input = '*'.
output =  '0.00'.
else.
output = input.
endif.
ENDFUNCTION.
and the output FM
FUNCTION CONVERSION_EXIT_ZQUAN_OUTPUT.
*"*"Local Interface:
*"  IMPORTING
*"     REFERENCE(INPUT)
*"  EXPORTING
*"     REFERENCE(OUTPUT)
if input = '0.00' or input is initial.
output =  '*'.
else.
output = input.
endif.
ENDFUNCTION.
3) Copy the Data Element/Domain for the quantity field data type to a custom one and attach the Conversion Exit ZQUAN to the domain and use the custom Data Element for the Quantity field in the ALV output table. The sub-total/summation and "*" output will both work