Question on how to retrieve elements in workflow container using WAPI

Question

Hi all, I need your great help. I have started a workflow and during it running I want get element in workflow container. First I use SAP_WAPI_READ_CONTAINER to get a workflow container which called "simple_container", but I can not get element using SWC_GET_ELEMENT because the container type I got does not match the type TABLE SWCONT. 
I have loop the container and could see the elements in the container, but I am not quit sure that I can get the element with its own type. For example, I have an internal table in container, when I loop to it and get its value, it can not be assigned to my local internal table variable for the type incomptible.
Could any one give me some advice? Thank you very much!

Answer 1

Thanks for your advice. I think I have found the way to do that by inside into the source code sap provide. The steps are as follows:
1 If the element you want get in container is char-based, just get container use 'SAP_WAPI_READ_CONTAINER' and loop into it to retrieve what you want.
2 If you want get element in other types, eg, internal table, then use:
lv_wi_handle TYPE REF TO if_swf_run_wim_internal,
cnt TYPE REF TO if_swf_cnt_container.
CALL METHOD cl_swf_run_wim_factory=>find_by_wiid
        EXPORTING
          im_wiid     = wi_id
        RECEIVING
          re_instance = lv_wi_handle.
      cnt = lv_wi_handle->get_wi_container( ).
CALL METHOD cnt->IF_SWF_CNT_ELEMENT_ACCESS_1~ELEMENT_GET_VALUE
       EXPORTING NAME = 'element_name'
       IMPORTING VALUE = element_value.
The variable element_value is just in your own type~.
Hope it useful to you, the reader.