topic Re: Dynamic typing error in Application Development and Automation Discussions

Dynamic typing error

Former Member — Wed, 27 Jun 2007 15:09:47 GMT

Hi *,

I'm trying to build a generic application to check values into any table.

But I'm facing the following problem:

FIELD-SYMBOLS: <fstable> TYPE table,

<fscond> TYPE table,

<fs_line> TYPE ANY,

<dyn_wa> TYPE any,

<dyn_field> TYPE any.

data: tipo(20) TYPE c VALUE '/FRE/SUBST_ASSMT'.

data: dy_line type ref to data.

ASSIGN it_data TO <fstable> CASTING TYPE (tipo).

create data dy_line TYPE (tipo)."like line of <fstable>.

assign dy_line->* to <dyn_wa> CASTING TYPE (tipo).

LOOP at <fstable> INTO <dyn_wa>.

---> if <dyn_wa>-subst_c = '0'.

--> endif.

do.

assign component sy-index of structure <dyn_wa> to <dyn_field>.

if sy-subrc <> 0.

exit.

endif.

enddo.

ENDLOOP.

It's clear that since the variable is untyped I can not perform this check. SE80 says that there is no structure, therefore no component.

Let's say, I've got a table, MARA and I want to check if a field is 0, and then later on I have to check if MARC has field 'X' to 0... I want to reuse the code.

Any ideas how can achieve that?

Any help will be apprecitad,

Isidoro!

Re: Dynamic typing error

former_member194669 — Thu, 28 Jun 2007 02:38:03 GMT

Hi,

Check this code,


  call function 'LVC_FIELDCATALOG_MERGE'
    exporting
      i_structure_name = p_table
    changing
      ct_fieldcat      = i_fcat
    exceptions
      others           = 1.
  if sy-subrc = 0.
    loop at i_fcat assigning <fcat>.
      <fcat>-tabname = p_table.
    endloop.
    call function 'LVC_FIELDCAT_COMPLETE'
      changing
        ct_fieldcat = i_fcat
      exceptions
        others      = 1.
  else.
    write: 'Error building field catalog'.
    stop.
  endif.

  call method cl_alv_table_create=>create_dynamic_table
    exporting
      it_fieldcatalog = i_fcat
    importing
      ep_table        = i_content.
  if sy-subrc = 0.
    assign i_content->* to <ptab>.
  else.
    write: 'Error creating internal table'.
    stop.
  endif.

  create data dref1 type (p_table).
  assign dref1->* to <xtab>.

  field-symbols : <l_f3> type any,
                  <l_f4> type any.

  
  loop at <ptab> assigning <xtab>.
     read table i_fcat assigning <fcat> with key
                                  tabname = p_table
                                  fieldname = 'SUBST_C'.
    if sy-subrc eq 0.
     assign component <fcat>-col_id of structure <xtab> to <l_f3>.
     if <l_f3> is initial.
                               " Do your code here         
     endif.
    endif.
  endloop.

aRs

Re: Dynamic typing error

Former Member — Thu, 28 Jun 2007 10:55:33 GMT

Hi,

Your solution is not bad, actually I like it, but I solved the problem in a different way. Have a look at:

FIELD-SYMBOLS: <fstable> TYPE table,

<fscond> TYPE table,

<fs_line> TYPE ANY,

<dyn_wa> TYPE any,

<dyn_field> TYPE any.

data: lt_wheres TYPE rsds_twhere,

lrt_cond TYPE STANDARD TABLE OF rsds_range,

lrs_cond LIKE LINE OF lrt_cond.

data: dy_line type ref to data.

DATA: lr_rtti_struc TYPE REF TO cl_abap_structdescr.

DATA: lt_comp TYPE cl_abap_structdescr=>component_table.

DATA: ls_comp LIKE LINE OF lt_comp.

data: campos type DDFIELDS,

ls_campos LIKE LINE OF campos.

DATA: index TYPE i VALUE '1'.

*Assign the dynamic structures.

ASSIGN it_data TO <fstable>.

create data dy_line like line of <fstable>.

assign dy_line->* to <dyn_wa>.

*get the description of the elements from DDIC

lr_rtti_struc ?= cl_abap_structdescr=>DESCRIBE_BY_DATA_REF( dy_line ).

lr_rtti_struc->GET_DDIC_FIELD_LIST( EXPORTING P_INCLUDING_SUBSTRUCTRES = 'X'

RECEIVING P_FIELD_LIST = campos ).

LOOP at campos INTO ls_campos.

if ls_campos-fieldname = 'SUBST_CTRL'.

index = sy-tabix.

endif.

ENDLOOP.

LOOP at <fstable> INTO <dyn_wa>.

do.

assign component sy-index of structure <dyn_wa> to <dyn_field>.

if sy-subrc <> 0.

exit.

endif.

if sy-index = index.

if <dyn_field> = '3'.

WRITE / 'OK!