CL_BSP_WD_REFERENCE_TOOL Custom Search Help

Question

Hi,
I tried to implement custom search help exactly as the guide "How-To Guide: Implement Value Helps in GenIL Components" instructed but I am facing a problem.
I am using CL_BSP_WD_REFERENCE_TOOL to store a reference of the context node class to be used in the search help class to get filter data, but it is not working, in method IF_BSP_WD_CUSTOM_F4_CALLBACK~RETRIEVE_CUSTOM_VALUES that I implemented the IR_CUSTOM_REF is initial.
I debbugged standard class CL_THTMLB_F4HELP method GET_HELP_VALUES and noticed that when it is calling the same class to get the reference the table inside the class that should have the reference is empty:
STANDARD CODE
* Retrieve the reference to use if any.
      READ TABLE gt_sel_options WITH KEY shlpfield = if_bsp_wd_custom_f4_callback=>gc_key_ref INTO ls_option.
      IF ls_option IS NOT INITIAL.
*  the value in "low" might have been cut off, so get the safe one
        lr_ref = cl_bsp_wd_reference_tool=>get_reference( iv_controller_key = lv_key_str ).
      ENDIF.
I am wondering how that could be possible that a static class has different information when called inside the context node class and when called in CL_THTMLB_F4HELP, the only explanation I have is that the BSP application that is responsible to display the F4 view is statelless.
Does anyone was able to pass a reference to method IF_BSP_WD_CUSTOM_F4_CALLBACK~RETRIEVE_CUSTOM_VALUES?
The code that I implemented:
Inside the V Getter method I set the reference, so class CL_BSP_WD_REFERENCE_TOOL insert into its internal table that is a static attribute my reference:
lo_iterator = me->collection_wrapper->get_iterator( ).
  IF lo_iterator IS BOUND.
    lo_entity ?= lo_iterator->get_by_index( iv_index ).
  ENDIF.
  IF lo_entity IS BOUND.
    CONCATENATE 'FIELDNAME_VSTEL' lv_str_index INTO lv_controller_key.
    CONDENSE lv_controller_key NO-GAPS.
    CALL METHOD cl_bsp_wd_reference_tool=>set_reference
      EXPORTING
        iv_remove_existing = abap_true
        iv_controller_key  = lv_controller_key
        iv_controller_ref  = lo_entity.
    CONCATENATE '\''' lv_controller_key '\''' INTO ls_map-context_attr.
    ls_map-f4_attr      = if_bsp_wd_custom_f4_callback=>gc_key_ref.
    APPEND ls_map TO lt_inmap.
  ENDIF.
* Output mapping
  CONCATENATE 'TABLE[' lv_str_index '].VSTEL'
      INTO ls_map-context_attr.
  ls_map-f4_attr = 'KEY'.
  APPEND ls_map TO lt_outmap.
  CREATE OBJECT rv_valuehelp_descriptor
    TYPE
      cl_bsp_wd_valuehelp_f4descr
    EXPORTING
      iv_help_id                  = '(ZCL_SOCR_CONTLIST_F4)'
      iv_help_id_kind             = if_bsp_wd_valuehelp_f4descr=>help_id_kind_comp
      iv_input_mapping            = lt_inmap
      iv_output_mapping           = lt_outmap
      iv_trigger_submit           = abap_false.
Then in my class ZCL_SOCR_CONTLIST_F4 method IF_BSP_WD_CUSTOM_F4_CALLBACK~RETRIEVE_CUSTOM_VALUES I try to obtain my reference:
IF ir_custom_ref IS BOUND.
            TRY.
                lo_entity ?= ir_custom_ref.
                lo_parent = lo_entity->get_parent( ).
              CATCH cx_sy_move_cast_error.
            ENDTRY.
          ENDIF.
But in vain because in the standard code of class CL_THTMLB_F4HELP when its call static method CL_BSP_WD_REFERENCE_TOOL=>get_reference  the static table attribute that should have the references is empty.
Does anyone have an explanation how a static class can have different data during the execution of the same program, same user session?
Thanks,
Mauricio

Answer 1

Hi,
Any Ideas?