topic Re: Dynamic Function in Application Development and Automation Discussions

Dynamic Function

Former Member — Fri, 16 Sep 2005 11:36:35 GMT

hii,

i have fm in which i have the code like this

my ztab contains 4 columns field1 field2 field3 field4.

call function 'ZUPDATE'.
  importing
    tabname = 'ZTAB'
    value   = '2,3,4,5' .

now in <b>zupdate</b> function i have written code like this

data wa like ztab.

split value at ','  
into wa-field1 wa-field2 wa-field3 wa-field4 .

modify (tabname) from wa .

but want to make this zupdate function as dynaminc so that it can be run for any z-table

i have tried using field symbols but not able to succeed.

the parameter i shud pass to zupdat fm will be any table name and its corressponding values saparated by ','.

help.

abhishek suppal

Re: Dynamic Function

Former Member — Fri, 16 Sep 2005 11:54:41 GMT

you can try so:

DATA: WA TYPE REF TO DATA.

DATA: T_VALUES(100) OCCURS 0 WITH HEADER LINE.

FIELD-SYMBOLS: <WA> TYPE ANY,

<VALUE> TYPE ANY.

Work area:

CREATE DATA WA TYPE (TABNAME).

ASSIGN WA->* TO <WA>.

REFRESH T_VALUE.

SPLIT VALUE AT ',' INTO TABLE T_VALUE.

LOOP AT T_VALUE.

ASSIGN COMPONENT SY-TABIX OF STRUCTURE <WA> TO <VALUE>.

MOVE T_VALUE TO <VALUE>.

ENDLOOP.

CHECK SY-SUBRC = 0.

MODIFY (TABNAME) FROM <WA>.

Max

Re: Dynamic Function

guillaume-hrc — Fri, 16 Sep 2005 11:57:19 GMT

Is it working ??

It is surprising that your function 'ZUPDATE' has the visiblity on the table declared in your first function ??

I would have expected some kind of Field-Symbol in order to address that particular table. Something like :

DATA : w_extern_tab(30) TYPE c VALUE '(ZFIRST_FUNCTION)ZTAB'
ASSIGN (w_extern_tab) TO <F>.
MODIIFY <F> FROM wa.

well, sort of.

Apart from this, I think you should use ASSIGN COMPONENT OF STRUCTURE ... to do this

Re: Dynamic Function

ChristianFi — Fri, 16 Sep 2005 14:00:32 GMT

I am not sure that it is a good idea to pass the values in a string. I would expect problems with packed formats or conversion exists.

Christian

Re: Dynamic Function

Former Member — Fri, 16 Sep 2005 14:54:03 GMT

Hi,

What is your SAP release ?

Svetlin

Re: Dynamic Function

Former Member — Fri, 16 Sep 2005 15:44:26 GMT

hi, though max's code can compile successfully.

I think there are some problems in it.

First, 'ZUPDATE' maybe a customize table or a internal table.

For CREATE DATA WA TYPE (TABNAME).

if TABNAME is a DDIC type, it is ok, if a internal table name, it will be fail. because CREATE DATA need a 'Absolute Type Names', not a internal name. So if ZUPDATE is a internal table, you can do like following:


data: cl_typ  type ref to CL_ABAP_TYPEDESCR.
cl_typ = CL_ABAP_TYPEDESCR=>DESCRIBE_BY_DATA( ZTAB ).
CALL FUNCTION 'ZUPDATE'
  EXPORTING
    TABNAME       = cl_typ->ABSOLUTE_NAME
     .........

Second, the problem is still have. even CREATE DATA can create a correct type table, but it is initial. And can its update be transfered out of the function? ZTAB is a table out of the FM.

In my opinion, if you want to achieve it in a clear and easy way, just reference how ALV function do.

transfer ANY table into FM, and using Field Symbol.

Just a table name is not enough.

hope it will be helpful

thanks