WF deadline - last end issue

Question

Iu2019m having a trouble with a deadline work item.
Customer requisition:
If the approver reserves the work item for 7 days without execute it, it will have to go back to every original approvers.
I have implemented this logic in that way:
Work itemu2019s latest end: &_WORKITEM.ACTUALSTARTDATE& + 7 days.
In the deadline outcome there is a condition to continue with the loop and go back to the work item.
There we have 2 different problems:
1)  When the work item is created, the expression &_WORKITEM.ACTUALSTARTDATE& is empty, so the system defines the latest end as: creation date + 7 days, which is not correct. The correct latest end will be: reservation date + 7 days.
2)  When the work item reach the latest end and it is recreated, the new work item's latest end is identically to the first work item latest end: first work itemu2019s creation date + 7 days.. for this reason, the new  work items are always missed the deadline and the workflow is stack into a loop :S The second work item will have to update the latest end date.
Please, somebody know why these 2 problems are happening and how can I fix them? Maybe somebody know any other way to implement customeru2019s requirement.
Iu2019ll really appreciate any help on this issue.
Thank you very much!

Answer 1

Try this:
METHOD if_swf_ifs_workitem_exit~event_raised.
  TYPE-POOLS: swlc.
  CONSTANTS: c_selected TYPE sww_wistat VALUE 'SELECTED',
             c_wdreserveddate TYPE swc_elem VALUE 'WDReservedDate',
             c_wdreservedtime TYPE swc_elem VALUE 'WDReservedTime'.
*Get context of work item.
  DATA: wa_header      TYPE swr_wihdr,
        wi_container   TYPE  REF TO      if_swf_ifs_parameter_container,
        wa_wi_return   TYPE swwwiret,
        v_date         TYPE swwwiret-wi_asd,
        v_time         TYPE swwwiret-wi_ast,
        v_wf_id        TYPE sww_wiid,
        wa_wf_container TYPE swr_cont,
        i_wf_container TYPE STANDARD TABLE OF swr_cont,
        v_sy_subrc TYPE sy-subrc,
        v_workitem  TYPE swlc_workitem.
  me->wi_context = im_workitem_context.
  IF im_event_name EQ swrco_event_state_changed.  "when the wi status change.
    CALL METHOD wi_context->get_header
      RECEIVING
        re_workitem_header = wa_header.
    IF wa_header-wi_stat EQ c_selected.
     CALL FUNCTION 'SWW_WI_RETURN_READ'
       EXPORTING
         wi_id       = wa_header-wi_id
       IMPORTING
         wi_return   = wa_wi_return
       EXCEPTIONS
         read_failed = 1
         OTHERS      = 2.
     IF sy-subrc EQ 0.
      v_date = sy-datum.
      v_time = sy-uzeit + 3900.
     ENDIF.
*- read workitem
      CALL FUNCTION 'SWL_WI_READ'
        EXPORTING
          wi_id    = wa_header-wi_id
        CHANGING
          workitem = v_workitem.
update it
      v_workitem-deadlines-wi_led = v_date.
      v_workitem-deadlines-wi_let = v_time.
      v_workitem-deadlines-wi_ded = v_date.
      v_workitem-deadlines-wi_det = v_time.
      v_workitem-update_deadlines = 'X'.
      CALL FUNCTION 'SWL_WI_DEADLINES_UPDATE'
        EXPORTING
          wi_id     = wa_header-wi_id
          do_commit = 'X'
        CHANGING
          workitem  = v_workitem
        EXCEPTIONS
          OTHERS    = 1.
      IF sy-subrc EQ 0.
      ENDIF.
    ENDIF.
  ENDIF.
ENDMETHOD.