LDB in HR

Question

hi friends,
          I am having a doubt, why LDB (HR PNP...) is used in HR, and why not Open sql statements for Reports.
          what is the difference between LDB and open sql statement, in what way it is benificial ?
          if possible any one send me documents  how to use LDB in HR ? to this mail id [email protected]
thank u HR consultants

Answer 1

LDB - is a SET of programs which provide u its own selection screen and commands to deal with HR data.
Hence for HR u can prefer LDB instead of SQL..
u can acheive the same thing via SQL but LDB is more easier as u need not write much code.
u have to specify in the attributes of the program ,LDb name..
like PNP,PCH etc..
here is a sample program using LDB  -
REPORT  ZPPL_PREVEMPLOYERS   message-id rp
                             line-size 250
                             line-count 65.
*Program logic :- This Report is used to Download all the Previous
Employer (IT0023) records of the employees
*eject
*& Tables and Infotypes                                                *
tables: pernr.
infotypes: 0000,
           0001,
           0002,
           0023.
*eject
*& Constants                                                           *
constants: c_1(1)       type c               value '1'   ,
           c_3(1)       type c               value '3'   ,
           c_i(1)       type c               value 'I'   ,
           c_x(1)       type c               value 'X'   ,
           c_eq(2)      type c               value 'EQ'  ,
           c_pl03       like p0001-werks     value 'PL03'.
*eject
*& Selection-Screen                                                    *
parameters: p_file  like rlgrap-filename default 'C:\Temp\ABC.xls',
            p_test  as checkbox default c_x               .
*eject
*& Internal tables                                                     *
Internal Table for Output
data: begin of t_output occurs 0    ,
       pernr like pernr-pernr       ,
       nachn like p0002-nachn       ,
       vorna like p0002-vorna       ,
       orgeh_stext like p1000-stext ,
       plans_stext like p1000-stext ,
       begda like p0023-begda       ,
       endda like p0023-endda       ,
       land1 like p0023-land1       ,
       arbgb like p0023-arbgb       ,
       ort01 like p0023-ort01   .
data: end of t_output           .
*eject
*& Variables                                                           *
data: o_stext like p1000-stext,
      p_stext like p1000-stext.
*eject
*& Initialization                                                      *
Initialization.
Initialize Selection-Screen values
  perform init_selction_screen.
*eject
*& AT Selection-screen                                                 *
at selection-screen .
Check if Test run selected, download file name should be entered
  if p_test is initial.  "
    if p_file is initial.
      message e016 with 'Please enter file name'
                        'specifying complete path'.
    endif.
  endif.
*eject
*& Start-of Selection                                                  *
Start-of-selection.
get pernr.
  clear t_output.
Read Infotype 0
  rp-provide-from-last p0000 space pn-begda pn-endda.
  check pnp-sw-found eq c_1.
Check if employee is active
  check p0000-stat2 in pnpstat2.      "pernr Active
Read Infotype 1
  rp-provide-from-last p0001 space pn-begda pn-endda.
  check pnp-sw-found eq c_1.
check if employee belongs to PL03
  check p0001-werks in pnpwerks.  "belongs to PL03
Check if emp belongs to Active Group
  check p0001-persg in pnppersg.
Read Infotype 2
  rp-provide-from-last p0002 space pn-begda pn-endda.
  check pnp-sw-found eq c_1.
Read Org Unit Text.
CALL FUNCTION 'HR_READ_FOREIGN_OBJECT_TEXT'
     EXPORTING
          OTYPE                   = 'O'
          objid                   = p0001-orgeh
          begda                   = p0001-begda
          endda                   = p0001-endda
          reference_date          = p0001-begda
     IMPORTING
          object_text             = o_stext
      EXCEPTIONS
          nothing_found           = 1
          wrong_objecttype        = 2
          missing_costcenter_data = 3
          missing_object_id       = 4
          OTHERS                  = 5.
*Read Position Text.
CALL FUNCTION 'HR_READ_FOREIGN_OBJECT_TEXT'
     EXPORTING
          OTYPE                   = 'S'
          objid                   = p0001-plans
          begda                   = p0001-begda
          endda                   = p0001-endda
          reference_date          = p0001-begda
     IMPORTING
          object_text             = p_stext
     EXCEPTIONS
          nothing_found           = 1
          wrong_objecttype        = 2
          missing_costcenter_data = 3
          missing_object_id       = 4
          OTHERS                  = 5.
Gather all the required information related to the emp
  move: pernr-pernr to t_output-pernr,
        o_stext to t_output-orgeh_stext,
        p_stext to t_output-plans_stext,
        p0002-nachn to t_output-nachn,
        p0002-vorna to t_output-vorna.
Gather previous Employee details
  loop at p0023.
    move-corresponding p0023 to t_output.
    append t_output.
  endloop.
*eject
*& End-of Selection                                                    *
end-of-selection.
  perform print_report.
Downlaod the file
  if not t_output[] is initial.
    if p_test eq space.
      perform download_file.
    endif.
  else.
    write: 'No records selected' color col_negative.
  endif.
*eject
*& Top-of-page                                                         *
Top-of-page.
Print Header
  perform print_header.
*eject
*&      Form  download_file
Description :
FORM download_file .
  DATA: full_file_name    TYPE string,
        z_akt_filesize    TYPE i     .
  full_file_name = p_file.
download table into file on presentation server
  CALL METHOD cl_gui_frontend_services=>gui_download
    EXPORTING
      filename                = full_file_name
      filetype                = 'DAT'
      NO_AUTH_CHECK           = c_x
      codepage                = '1160'
    IMPORTING
      FILELENGTH              = z_akt_filesize
    CHANGING
      data_tab                = t_output[]
    EXCEPTIONS
      file_write_error        = 1
      no_batch                = 2
      gui_refuse_filetransfer = 3
      invalid_type            = 4
      no_authority            = 5
      unknown_error           = 6
      header_not_allowed      = 7
      separator_not_allowed   = 8
      filesize_not_allowed    = 9
      header_too_long         = 10
      dp_error_create         = 11
      dp_error_send           = 12
      dp_error_write          = 13
      unknown_dp_error        = 14
      access_denied           = 15
      dp_out_of_memory        = 16
      disk_full               = 17
      dp_timeout              = 18
      file_not_found          = 19
      dataprovider_exception  = 20
      control_flush_error     = 21
      not_supported_by_gui    = 22
      error_no_gui            = 23
      OTHERS                  = 24.
  IF  sy-subrc               NE        0.
    MESSAGE e016 WITH 'Download-Error; RC:' sy-subrc.
  ENDIF.
ENDFORM.                    " download_file
*eject
*&      Form  print_report
*Description:
FORM print_report .
  data: i       type i,
        w_count type i.
  sort t_output.
Print the report
  loop at t_output.
    i = sy-tabix mod 2.
    if i eq 0.
      format color col_normal intensified on.
    else.
      format color col_normal intensified off.
    endif.
    write:/1     t_output-pernr          ,
           10     t_output-vorna(25)     ,
           35    t_output-nachn(25)      ,
           61   t_output-orgeh_stext     ,
           102  t_output-plans_stext     ,
           143  t_output-begda           ,
           154   t_output-endda          ,
           168   t_output-land1          ,
           178   t_output-arbgb(40)      ,
           219   t_output-ort01          ,
           249   space              .
  endloop.
  uline.
  Describe table t_output lines w_count.
  Skip 2.
  Write:/ 'Total No of Records Downloaded: ' color col_total,
          w_count.
ENDFORM.                    " print_report
*eject
*&      Form  print_header
*Description:
FORM print_header .
  skip 1.
  Uline.
  format Intensified on color col_heading.
  write:/1   'Pers. #'        ,
         10   'Last Name'     ,
         35   'First Name'    ,
         61   'Org Unit'      ,
         102  'Position'      ,
         143  'Beg Date'      ,
        154   'End Date'      ,
        168   'Cntry Key'     ,
        178   'Prev Employer' ,
        219  'City'           ,
        249   space          .
  format intensified off color off.
  uline.
ENDFORM.                    " print_header
*eject
*&      Form  init_selction_screen
*Description:
FORM init_selction_screen .
  refresh: pnpwerks,
           pnppersg,
           pnpstat2.
  clear:   pnpwerks,
           pnppersg,
           pnpstat2.
  pnpwerks-sign   = c_i.
  pnpwerks-option = c_EQ.
  pnpwerks-low    = c_pl03.
  append pnpwerks.
  pnppersg-sign   = c_i.
  pnppersg-option = c_EQ.
  pnppersg-low    = c_1.
  append pnppersg.
  pnpstat2-sign   = c_i.
  pnpstat2-option = c_EQ.
  pnpstat2-low    = c_3.
  append pnpstat2.
ENDFORM.                    " init_selction_screen