Check If Background Job is Runing

*** We've got a standart FM to check a BG Jobs state SUBST_GET_JOBSTATE
*** Below you can see my code
*** I've the job name MY_JOB_NAME  and i am searching
*** if there is any active job still running for 2 days. if you have
*** program name then just use progname field instead of jobname.

 TABLES : tbtco.

  data : lt_tbtcp type table of tbtcp with header line.
  data : lv_datum type sy-datum.
  data : lv_message type string.
  data: lv_running.

** Check For A reasonable period
  lv_datum = sy-datum - 3.
 
 CLEAR : lv_running.
  select *
    into corresponding fields of table lt_tbtcp
    from tbtcp
   where jobname eq 'MY_JOB_NAME'
      and sdldate gt lv_datum.

  loop at lt_tbtcp.
    select single * from tbtco
           where jobname  = lt_tbtcp-jobname
             and jobcount = lt_tbtcp-jobcount.
    check sy-subrc eq 0.
    if  tbtco-status eq 'R'.
      "JOB is running
       message 'JOB is running' type 'I'.
       lv_running = 'X'.
      exit.
    endif.
  endloop.

if lv_running = 'X'.

  " We have a running job with the specified parameters
endif.

USER EXISTENCE CHECK

***  Check if user exists :

*** BAPI_USER_EXISTENCE_CHECK
  call function 'BAPI_USER_EXISTENCE_CHECK'
    exporting
      username = p_user
    importing
      return   = ls_return.
if ls_return-number = '124'.
" DOES NOT EXISTS
elseif ls_return-number = '088'.
" EXISTS
endif.

*** SUSR_USER_CHECK_EXISTENCE
  call function 'SUSR_USER_CHECK_EXISTENCE'
       exporting
            user_name            = user_name
       exceptions
            user_name_not_exists = 1
            others               = 2.
if sy-subrc EQ 0.
" EXISTS
endif.

Get ALV instance From ALV Function

While using ALV function to display ALV grid , there are some restrictions according to oo alv. FM below gives us the chance to use alv instance without restrictions.

****

 data: lr_grid type ref to cl_gui_alv_grid.

  call function 'GET_GLOBALS_FROM_SLVC_FULLSCR'
    importing
      e_grid = lr_grid.

***

Merge Fieldcat From Dictionary Structure

*** FOR OO ALV

 data : gt_fcat type lvc_t_fcat.

  call function 'LVC_FIELDCATALOG_MERGE'
    exporting
      i_structure_name       = 'YOUR_DICT_STRUCTURE'
      i_bypassing_buffer     = 'X'
    changing
      ct_fieldcat            = gt_fcat[]
    exceptions
      inconsistent_interface = 1
      program_error          = 2
      others                 = 3.
  if sy-subrc <> 0.
    message id sy-msgid type sy-msgty number sy-msgno
            with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  endif.

*** FOR ALV FUNCTION

  data : gt_fieldcat type slis_t_fieldcat_alv.


  call function 'REUSE_ALV_FIELDCATALOG_MERGE'
    exporting
      i_structure_name = 'YOUR_DICT_STRUCTURE'
      i_bypassing_buffer     = 'X'
    changing
      ct_fieldcat      = gt_fieldcat.

--

HR : FM to Find Active Plan Variant

  DATA : gv_plvar TYPE plvar.

  call function 'RH_GET_ACTIVE_WF_PLVAR'
    importing
      act_plvar       = gv_plvar
    exceptions
      no_active_plvar = 1
      others          = 2.

ABAP Date Calculations

 Class CL_HRPAD_DATE_COMPUTATIONS has static methods for most of the date operations you need.

ADD_WEEKS_TO_DATE    Adfd No. of Weeks to Date
ADD_MONTHS_TO_DATE    Adds No. of Months to Date
ADD_YEARS_TO_DATE    Adds No. of Years to Date
SUBTRACT_WEEKS_FROM_DATE    Subtracts No. of Weeks from Date
SUBTRACT_MONTHS_FROM_DATE    Subtracts No. of Months from Date
SUBTRACT_YEARS_FROM_DATE    Subtracts No. of Years from Date
GET_WEEKDAY_NUMBER    Determines Number of Weekday
GET_WEEKDAY_NUMBER_SHIFTED    Determines Number of Weekday (Shifted)
GET_FIRST_DAY_CALENDAR_WEEK    Determines First Day of Calendar Week for Particular Year
GET_LAST_WEEKDAY_NUMBER    Determines Number of Last Weekday
GET_FIRST_DAY_IN_WEEK    Determines First Day of a Week
GET_FIRST_DAY_IN_SHIFTED_WEEK    Determines First Day of Week (Shifted)
GET_FIRST_DAY_PREVIOUS_MONTH    Determines First Day in Previous Month
GET_WEEK    Determines Week in Which Date Lies (Shifted)
GET_SHIFTED_WEEK    Determines Week in Which Date Lies (Shifted)
GET_LAST_DAY_IN_MONTH    Calculates Last Day of Current Month
GET_LAST_DAY_PREVIOUS_MONTH    Determines Last Day of Previous Month
GET_DAYS_PER_YEAR    Determines No. of Days per Year

*** Example

     call method cl_hrpad_date_computations=>get_last_day_in_month
      exporting
        date_in  = lv_begda
      receiving
        date_out = lv_endda.