topic Re: Dynamically Assign N Length in Application Development and Automation Discussions

Dynamically Assign N Length

Former Member — Mon, 11 Sep 2006 03:47:46 GMT

Hi All,

I have a requirement for the user to dictate the length of a field. A field in the selection screen would ask for a length (a number) for example 6.

The program would then read this field and use the value 6 to be the length of an internal variable, CTR.

DATA: CTR(4) TYPE N.

CTR's default length is 4, but since the user wants it to be 6, it should be changed.

This is important since this field will be used to split a string into exact number of characters.

Please help.

Thanks,

Kenny

Re: Dynamically Assign N Length

athavanraja — Mon, 11 Sep 2006 05:23:54 GMT

here is the code sample.

parameters: size(10) .

data: elem type ref to CL_ABAP_ELEMDESCR .
data: len type i .
data:  dref type ref to data .
field-symbols: <field> type any.

start-of-selection .
len = size .
elem = cl_abap_elemdescr=>get_c( len ).

create data dref type handle elem.

assign dref->* to <field>.

clear len .

describe field <field> length len in character mode .

write:/ len .

Regards

Raja

Re: Dynamically Assign N Length

Former Member — Mon, 11 Sep 2006 05:48:33 GMT

Hi Durairaj,

Thanks for the reply.

This method doesn't exist though.

cl_abap_elemdescr=>get_c

Please help.

Thanks,

Kenny

Re: Dynamically Assign N Length

athavanraja — Mon, 11 Sep 2006 05:49:34 GMT

which version of SAP you are using?

Raja

Re: Dynamically Assign N Length

Former Member — Mon, 11 Sep 2006 05:52:09 GMT

4.6B

Thanks.

Re: Dynamically Assign N Length

athavanraja — Mon, 11 Sep 2006 05:56:57 GMT

sorry, the code sample i had given wont work in 4.6B, you need atleast WAS6.20

i dont know how this can be done in 4.6B

Regards

Raja

Re: Dynamically Assign N Length

Former Member — Mon, 11 Sep 2006 06:18:13 GMT

Hi,

Is the program going to be used by various users @ the same time?

If yes then I guess it would be very difficult to do it otherwise if it's going to be used by only one user @ a time then I can give you a very crude way of doing it.

Reply if needed.

Regards

Nishant