Get Workitem container data in ABAP OO

Question

Hello!
I have some problem in workflow by using ABAP OO.
I have  a class whith method display in current workitem.
In this method how can get container data like wiid etc.?

Answer 1

In this case you could only use, what's either available in the work item container or what the business object (here: WORKITEM) provides.
As you need a whole bunch of information, it will be best to read it from the database within the .Display-Method, but I would suggest, that you use the structure/table SWWWIHEAD (which is mostly similar to SWWLHEAD structure).
You'd do it this way:
METHOD Display.
   DATA: l_workitem_header     TYPE swwwihead.
   SELECT SINGLE * FROM swwwihead
                   INTO l_workitem_header
                   WHERE wi_id = i_wi_id.
   IF sy-subrc <> 0.
      "Something is wrong here, as the work item is not valid
      "... do some exception handling there or end method with message,
      "such as MESSAGE S....
      EXIT.
   ENDIF.
   "... Detailed data of current workitem is now
   "... in struct l_workitem_header
ENDMETHOD.