What is CL_EX_RSOD_ITEM_DOC_LIST and BADI

Question

Hi all,
First of all: sorry for this very long question...
I'm trying to create my own document list based on the original document list which can be found in de standard library in the web application designer. Therefor I needed to copy the class CL_RSR_WWW_ITEM_DOC_LIST to my own custom class. I made the needed entries in the different RSRRENDER* tables.
But when I wanted to activate my new class, I received some errors concerning the abap object 'me' which is defined in 3 methods. An example of it is the following:
30B SP10 call badi function CHANGE_RENDERING
  IF NOT p_r_item_doc_list_badi IS INITIAL.
  determine page
    DATA: l_r_page TYPE REF TO cl_rsr_www_page.
    l_r_page = get_template( ).
    CALL METHOD p_r_item_doc_list_badi->change_rendering
      EXPORTING
        i_r_page         = l_r_page
        i_r_item         = me
        i_r_context      = n_r_context
        i_html_back      = l_html_back
        i_t_html_search  = p_t_html_search
        i_t_html_context = p_t_html_context
        i_html_functions = p_html_functions
        i_html_list      = p_html_list
      CHANGING
        c_html           = n_sx_output-string.
  ENDIF.         "BADI
The problem is (i think) that this me is still referenced to the original class. In fact, when I double click on the <b>change_rendering</b> part in the code above I arrive in a new method (IF_EX_RSOD_ITEM_DOC_LIST~CHANGE_RENDERING). When I do a double click on the <b>I_R_ITEM</b> in there, I arrive in a class interface called <b>CL_EX_RSOD_ITEM_DOC_LIST</b>. There I see that I_R_ITEM is a type ref to CL_RSR_WWW_ITEM_DOC_LIST (thus, the original class of the document list). This class interface CL_EX_RSOD_ITEM_DOC_LIST, cannot be copied so it seems (in se24 I get a message saying that it only can be done in the badi builder, but in se18 and se19 I don't find this class interface). What am I supposed to do to be able to use my own custom document list? Can I change this class interface? If not, what is a BADI and what are my options with that class interface?
thanks a lot,
Tom

Answer 1

Audiences. This link is for 2007 but it's still there in 2010 and 13:
http://office.microsoft.com/en-us/sharepoint-server-help/target-content-to-specific-audiences-HA010169053.aspx
They aren't security trimming but they will conceal information that isn't useful for users. That might cover some, if not all, of your requirements.
You could use three separate lists for each but you can do the same with three folders within the libraries just as well and still get most of the benefits.