topic address structure's component dynamically in Application Development and Automation Discussions

address structure's component dynamically

Former Member — Sun, 23 Feb 2014 15:47:05 GMT

Dear All,

I am getting the message "The data object ls_udat3 does not have a component called <fs_genfield>"
when I am trying to address structure's component dynamically. I kindly ask you for your support,
What have I done wrong at the point in the program.

Best regards

Alex


data:  ls_udata type zbbpusr01_2,
         lt_attr_data  type bbpt_attr,
         ls_attr_data  type bbps_attr,
         ls_vlist      type bbps_attr_values,
         lt_vlist      type bbpt_attr_values,
         ls_udat3      type zbbpusr01_3,
         ls_udat3_2    type zbbpusr01_3,
         lv_fieldname  type string,
         lt_udat3      type table of zbbpusr01_3,
         et_fcat       type lvc_t_fcat,
         lv_user type baluser.
  LOOP AT p_gt_udate INTO ls_udata.
    lv_user = ls_udata-userid.
    CALL FUNCTION 'BBP_READ_ATTRIBUTES'
      EXPORTING
        iv_user                 = lv_user
        IV_SCENARIO             = 'BBP'
        it_attr_list            = gt_attr_list2
      IMPORTING
        ET_ATTR                 = lt_attr_data
      EXCEPTIONS
        object_id_not_found     = 1
        no_attributes_requested = 2
        attributes_read_error   = 3
        OTHERS                  = 4.

    FIELD-SYMBOLS:
    <fs_zbbpusr03>  type zbbpusr01_3,
    <fs_zbbpusr>    type zbbpusr01_3,
    <fs_field>      type bbps_attr-attr_id,
    <fs_attr_data>  type bbps_attr,
    <fs_vlist>      type bbps_attr_values,
    <fs_genfield>   type any.
    loop at lt_attr_data ASSIGNING <fs_attr_data>.
      assign <fs_attr_data>-attr_id to <fs_genfield>.
      loop at <fs_attr_data>-vlist  ASSIGNING <fs_vlist>.
        MOVE <fs_vlist>-value to ls_udat3-<fs_genfield>.
      ENDLOOP.
    ENDLOOP.
  ENDLOOP.
ENDFORM.                    " READ_ATTR

Re: address structure's component dynamically

former_member585060 — Sun, 23 Feb 2014 16:14:43 GMT

Hi,

It seems you are trying to populate LS_UDAT3-VALUE with the <fs_vlist>-value. May be you can try some thing with ASSIGN COMPONENT statement.

ex:-

ASSIGN COMPONENT 'VALUE' OF STRUCTURE <fs_vlist> TO <fs_genfield>.

ls_udat3-value = <fs_genfield>.

Thanks & Regards

Bala Krishna

Re: address structure's component dynamically

Former Member — Sun, 23 Feb 2014 16:36:01 GMT

Hi,

thats wrong.

I am not trying to populate LS_UDAT3-VALUE with the <fs_vlist>-value.

I am trying to populate ONLY LS_UDAT3-<fs_genfield> with the <fs_vlist>-value.

I can't do anything with your suggestion.

Furthermore.. LS_UDAT3 does not have a component called value.

Re: address structure's component dynamically

former_member585060 — Sun, 23 Feb 2014 16:40:04 GMT

How come you are mapping LS_UDAT3 field with <fs_genfield>, it will throw an error that LS_UDAT3 does not have a component called <fs_genfield>.

What is the field name in LS_UDAT3 to which you are mapping <fs_vlist>-value?

Re: address structure's component dynamically

Former Member — Sun, 23 Feb 2014 16:48:32 GMT

imagine that <fs> is the same as ls. Meaning - once assigned, working with a field-symbol and a standard variable is (almost) the same.

So what your have written have the same meaning as would have LS_UDAT3-ls_variable, if "ls_variable" was a standard variable.

If you want to assign any value to a specific column of ls_udat3 structure, use this syntax:

assign component 'component_name' of structure ls_udat3 to <lv_field>.

<lv_field> = value.

Re: address structure's component dynamically

Former Member — Sun, 23 Feb 2014 17:12:17 GMT


If you want to assign any value to a specific column of ls_udat3 structure, use this syntax:

assign component 'component_name' of structure ls_udat3 to <lv_field>.
<lv_field> = value.

in my case the 'component_name' must be determined dynamically. This is the challenge

in my issue

This was the reason why got the error message: The data object ls_udat3 does not have a component called <fs_genfield>"

Look at:

MOVE <fs_vlist>-value to ls_udat3-<fs_genfield>.

ls_udat3 -> Structure

<fs_genfield> -> Field/Component

Re: address structure's component dynamically

Former Member — Sun, 23 Feb 2014 19:17:39 GMT

Hi Alexander,

If I understood the requirement correctly , <fs_genfield> will have component name (of ls_udat3)at run time , then you can use Jozef 's suggestion . It will solve the problem

FIELD SYMBOL <fs_value> type any.

ASSIGN COMPONENT <fs_genfield> OF STRUCTURE LS_UDAT3 to <fs_value>.

<fs_value> = <fs_vlist>-value.

Thanks & Regards,

Arun

Re: address structure's component dynamically

Former Member — Sun, 23 Feb 2014 19:38:42 GMT

Hi Arun,

thank you very much. Problem is solved.

This is how I have implemented it.

assign component <fs_attr_data>-attr_id of structure ls_udat3 to <fs_field>.

<fs_field> = <fs_vlist>-value.

Reagrds

Alex

Re: address structure's component dynamically

Former Member — Sun, 23 Feb 2014 19:41:30 GMT

I can't see any link or button about how I can reward.

Re: address structure's component dynamically

Former Member — Mon, 24 Feb 2014 08:40:58 GMT

if you are logged in, the button should be seen in every post.