Dump after going back from a view

Question

i call view VIEW_SPRL from view VIEW_ALTA, and when i go back to VIEW_ALTA
using navigation plugs, this view is showed for about a second and inmediately
after i get the dump error "Access via 'NULL' object reference not possible"
Any idea ?
Should i display my code for VIEW_SPRL in the Handle_IN event ? Or is it ok
to have it as I do in the WDDOMODIFYVIEW() with the sentence:
CHECK first_time = abap_true
thanks

Answer 1

I don't think I can paste all this info here so that it can be nice displayed, but I will try anyway.
Call stack:
Nº    Cl.          Programa                            Include                             Lín.
      Nom.
    6 METHOD       CL_WDR_CLIENT_SSR=============CP    CL_WDR_CLIENT_SSR=============CM00T   142
      CL_WDR_CLIENT_SSR=>IF_WDR_CLIENT~GET_CLIENT_UPDATES
    5 METHOD       CL_WDR_MAIN_TASK==============CP    CL_WDR_MAIN_TASK==============CM00I    78
      CL_WDR_MAIN_TASK=>EXECUTE
    4 METHOD       CL_WDR_MAIN_TASK==============CP    CL_WDR_MAIN_TASK==============CM00J    69
      CL_WDR_MAIN_TASK=>IF_HTTP_EXTENSION~HANDLE_REQUEST
    3 METHOD       CL_HTTP_SERVER================CP    CL_HTTP_SERVER================CM01B   366
      CL_HTTP_SERVER=>EXECUTE_REQUEST_FROM_MEMORY
    2 FUNCTION     SAPLHTTP_RUNTIME                    LHTTP_RUNTIMEU02                      946
      HTTP_DISPATCH_REQUEST
    1 MODULE (PBO) SAPMHTTP                            SAPMHTTP                               13
      %_HTTP_START
Source code extract:
  112         i_update_data      = m_data_update_tmp
  113         i_event_queue      = event_queue.
  114   enddo.
  115
  116
  117   param_str = wdr_task=>request->get_form_field( mc_request_field_name ).
  118   check param_str is not initial.
  119
  120   split param_str at ';' into table param_entries.
  121
  122   loop at param_entries into param_entry.
  123     " skip client removed events
  124     check param_entry is not initial.
  125
  126     clear event_param_1.
  127     clear event_param_2.
  128     clear event_param_3.
  129     clear event_param_4.
  130     clear event_param_5.
  131     split param_entry at ','
  132           into handler_id event_name event_param_1 event_param_2 event_param_3 event_param_4
  133     replace all occurrences of '_' in handler_id with ''.
  134     replace all occurrences of '_' in event_name with ''.
  135     replace all occurrences of '_' in event_param_1 with ''.
  136     replace all occurrences of '_' in event_param_2 with ''.
  137     replace all occurrences of '_' in event_param_3 with ''.
  138     replace all occurrences of '_' in event_param_4 with ''.
  139     replace all occurrences of '_' in event_param_5 with ''.
  140
  141     event_handler = get_event_handler( handler_id ).
>>>>>     call method event_handler->handle_event
  143       EXPORTING
  144         i_event_handler_id = handler_id
  145         i_event_name       = event_name
  146         i_event_param_1    = event_param_1
  147         i_event_param_2    = event_param_2
  148         i_event_param_3    = event_param_3
  149         i_event_param_4    = event_param_4
  150         i_event_param_5    = event_param_5
  151         i_update_data      = m_data_update_tmp
  152         i_event_queue      = event_queue.
  153   endloop.
  154
  155   m_data_update_tmp->send_to( client_application ).
  156   m_data_update_tmp->clear( ).
Edited by: Joan Ayala on May 14, 2009 10:31 AM