topic Re: Reg:function module in Application Development and Automation Discussions

Reg:function module

Former Member — Fri, 21 Nov 2008 13:46:21 GMT

Hi all,

I need one function module for catching field names in a structure.

i am calling that structure as an import parameter in a Function module.

I need to get field names of that structur. is there any function module exists?

Regards,

sarath

Re: Reg:function module

Former Member — Fri, 21 Nov 2008 13:54:54 GMT

Up date please

Re: Reg:function module

MarcinPciak — Fri, 21 Nov 2008 14:00:15 GMT

Hi,

You can write that yourself using DD03L table, or use this FM F4_DD_STRUCTURE_FIELDS.

Regards

Marcin

Re: Reg:function module

Former Member — Fri, 21 Nov 2008 14:09:13 GMT

Hi,

You can use the structure descriptor class as well. See the code below


REPORT  z_struc_describe                        .

DATA  type_desc TYPE REF TO cl_abap_typedescr.

DATA : l_struc TYPE REF TO cl_abap_structdescr.

DATA : lt_comp TYPE abap_compdescr_tab,
       w_comp LIKE LINE OF lt_comp.

PARAMETERS : p_table TYPE tabname.

CALL METHOD cl_abap_complexdescr=>describe_by_name
  EXPORTING
    p_name         = p_table
  RECEIVING
    p_descr_ref    = type_desc
*  EXCEPTIONS
*    TYPE_NOT_FOUND = 1
*    others         = 2
        .
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*            WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.

l_struc ?= type_desc.

lt_comp = l_struc->components.
WRITE : 5 'Field',
        25 'Data type',
        40 'Length',
        50 'Decimals'.

LOOP AT lt_comp INTO w_comp.
  WRITE : /5 w_comp-name,
           30 w_comp-type_kind,
           35 w_comp-length RIGHT-JUSTIFIED ,
           45 w_comp-decimals RIGHT-JUSTIFIED .
  CLEAR w_comp.
ENDLOOP.

Remember with oops its much faster then using function modules. So go with the oops approach.

regards,

Advait

Re: Reg:function module

Former Member — Fri, 21 Nov 2008 14:16:59 GMT

Hello,

Use this FM 'CATSXT_GET_DDIC_FIELDINFO'.

Hope it helps.

Thanks,

Jayant

Re: Reg:function module

Former Member — Fri, 21 Nov 2008 14:54:55 GMT

THanks for u r help.