Sample ABAP code for userexits, and calling bapi's

Question

Hi,
Can someone please send me sample ABAP code
1) to do extractor enhancement using user exit.
2) ABAP program to call BAPI to read live cache order series data in SNP and write to Idocs through some ports.
3) ABAP routine to generate file name (based on date/country)in the infopackage to upload flatfiles.
Thank you very much in advance and appreciate any help.
Regards
Prasad

Answer 1

hai ,
check this code...
*& Tables
tables : tstc,     "SAP Transaction Codes
         tadir,    "Directory of Repository Objects
         modsapt,  "SAP Enhancements - Short Texts
         modact,   "Modifications
         trdir,    "System table TRDIR
         tfdir,    "Function Module
         enlfdir,  "Additional Attributes for Function Modules
         tstct.    "Transaction Code Texts
*& Variables
data : jtab like tadir occurs 0 with header line.
data : field1(30).
data : v_devclass like tadir-devclass.
*& Selection Screen Parameters
selection-screen begin of block a01 with frame title text-001.
selection-screen skip.
parameters : p_tcode like tstc-tcode obligatory.
selection-screen skip.
selection-screen end of block a01.
*& Start of main program
start-of-selection.
Validate Transaction Code
  select single * from tstc
    where tcode eq p_tcode.
Find Repository Objects for transaction code
  if sy-subrc eq 0.
    select single * from tadir
       where pgmid    = 'R3TR'
         and object   = 'PROG'
         and obj_name = tstc-pgmna.
    move : tadir-devclass to v_devclass.
    if sy-subrc ne 0.
      select single * from trdir
         where name = tstc-pgmna.
      if trdir-subc eq 'F'.
        select single * from tfdir
          where pname = tstc-pgmna.
        select single * from enlfdir
          where funcname = tfdir-funcname.
        select single * from tadir
          where pgmid    = 'R3TR'
            and object   = 'FUGR'
            and obj_name = enlfdir-area.
        move : tadir-devclass to v_devclass.
      endif.
    endif.
Find SAP Modifactions
    select * from tadir
      into table jtab
      where pgmid    = 'R3TR'
        and object   = 'SMOD'
        and devclass = v_devclass.
    select single * from tstct
      where sprsl eq sy-langu
        and tcode eq p_tcode.
    format color col_positive intensified off.
    write:/(19) 'Transaction Code - ',
    20(20) p_tcode,
    45(50) tstct-ttext.
    skip.
    if not jtab[] is initial.
      write:/(95) sy-uline.
      format color col_heading intensified on.
      write:/1 sy-vline,
      2 'Exit Name',
      21 sy-vline ,
      22 'Description',
      95 sy-vline.
      write:/(95) sy-uline.
      loop at jtab.
        select single * from modsapt
        where sprsl = sy-langu and
        name = jtab-obj_name.
        format color col_normal intensified off.
        write:/1 sy-vline,
        2 jtab-obj_name hotspot on,
        21 sy-vline ,
        22 modsapt-modtext,
        95 sy-vline.
      endloop.
      write:/(95) sy-uline.
      describe table jtab.
      skip.
      format color col_total intensified on.
      write:/ 'No of Exits:' , sy-tfill.
    else.
      format color col_negative intensified on.
      write:/(95) 'No User Exit exists'.
    endif.
  else.
    format color col_negative intensified on.
    write:/(95) 'Transaction Code Does Not Exist'.
  endif.
Take the user to SMOD for the Exit that was selected.
at line-selection.
  get cursor field field1.
  check field1(4) eq 'JTAB'.
  set parameter id 'MON' field sy-lisel+1(10).
  call transaction 'SMOD' and skip first screen.