topic Re: cl_alv_event_data->m_data - Feed Stack Error in Application Development and Automation Discussions

cl_alv_event_data->m_data - Feed Stack Error

Former Member — Mon, 22 Aug 2016 06:39:03 GMT

Dear SDNers,

I implemented F4 in ALV. After selecting value from F4, user will go to next screen. Again if user went back to the initial screen and trying to select value from F4, double click going to dump.

Here is the code. Please help me

TYPES: BEGIN OF onf4_event_parameters_type.
     TYPES: c_fieldname     TYPE lvc_fname.
     TYPES: cs_row_no       TYPE lvc_s_roid.
     TYPES: cr_event_data   TYPE REF TO cl_alv_event_data.
     TYPES: ct_bad_cells    TYPE lvc_t_modi.
     TYPES: c_display       TYPE char01.
     TYPES: END OF onf4_event_parameters_type.

     DATA: f4_params TYPE onf4_event_parameters_type.

CLEAR:f4_params.
     f4_params-c_fieldname = e_fieldname.
     f4_params-cs_row_no = es_row_no.
     f4_params-cr_event_data = er_event_data.
     f4_params-ct_bad_cells = et_bad_cells.
     f4_params-c_display = e_display.

FIELD-SYMBOLS <itab> TYPE lvc_t_modi.
DATA: ls_modi TYPE lvc_s_modi,
ls_f4_itab TYPE f4_itab_type.

     ASSIGN f4_params-cr_event_data->m_data->* TO <itab>.
     ls_modi-row_id = f4_params-cs_row_no-row_id.
     ls_modi-fieldname = f4_params-c_fieldname.

     READ TABLE f4_itab INTO ls_f4_itab INDEX es_row_no-row_id.
     ls_modi-value = ls_f4_itab-value.
*    append ls_modi to lt_tab.
     APPEND ls_modi TO <itab>.

first time it is working fine. But next time when i came back to first screen again from second screen, this double click event giving dump.

Please help me.

Regards,

Venkat

Re: cl_alv_event_data->m_data - Feed Stack Error

RaymondGiuseppi — Mon, 22 Aug 2016 06:50:30 GMT

Did you forget the


er_event_data->m_event_handled = gc_true.

at end of the handling method?

Regards,

Raymond

Re: cl_alv_event_data->m_data - Feed Stack Error

Former Member — Mon, 22 Aug 2016 07:02:00 GMT

Dear Raymond,

No, i am using this as well. Still

Re: cl_alv_event_data->m_data - Feed Stack Error

Former Member — Mon, 22 Aug 2016 07:59:55 GMT

Guys,

Any clue i will get?

Re: cl_alv_event_data->m_data - Feed Stack Error

RaymondGiuseppi — Mon, 22 Aug 2016 08:21:27 GMT

Either provide detail of dump (export/attach) or check execution of statements in the method (sy-subrc on ASSIGN and APPEND)

Re: cl_alv_event_data->m_data - Feed Stack Error

Former Member — Mon, 22 Aug 2016 08:34:43 GMT

Dear Raymond,

Here is the code where dump is coming

ASSIGN f4_params-cr_event_data->m_data->* TO <itab>. ( Here sy-subrc getting failed)
     ls_modi-row_id = f4_params-cs_row_no-row_id.
     ls_modi-fieldname = f4_params-c_fieldname.

     READ TABLE f4_itab INTO ls_f4_itab INDEX es_row_no-row_id.
     ls_modi-value = ls_f4_itab-value.
     APPEND ls_modi TO <itab>.

First time it is working as i mentioned above

Once i went to next screen->came to first screen again-> used f4 -> selected value and double clicked.

Now

Here assingig value to field symbol. Where sy-subrc is 4 and giving dump saying Field symbol has not yet been assigned.

Hope it is clear.Please let me know if you need any more information and help me.

Re: cl_alv_event_data->m_data - Feed Stack Error

Former Member — Mon, 22 Aug 2016 09:08:13 GMT

Here i got a clue that when i called another screen and going back to intial screen, i m clearing the container.

Here i wrote code like below to clear container.

IF g_custom_container IS NOT INITIAL.
     CALL METHOD g_custom_container->free.
     CLEAR:g_custom_container.
     FREE:g_custom_container.
   ENDIF.

Is it because of clearing my container, i am facing this issue. If yes, please let me know

Re: cl_alv_event_data->m_data - Feed Stack Error

Former Member — Tue, 23 Aug 2016 05:43:14 GMT

Can I get any clue?

Re: cl_alv_event_data->m_data - Feed Stack Error

Sandra_Rossi — Tue, 23 Aug 2016 05:57:56 GMT

Be careful when you describe the error : you've got the error "FREED STACK error" (not feed stack)

It means that you created a reference to a local variable, so the reference is freed when the procedure is left, as the local variable doesn't exist anymore.

Re: cl_alv_event_data->m_data - Feed Stack Error

Former Member — Tue, 23 Aug 2016 12:48:48 GMT

Sorry. it is FREED STACK.

Please let me know the solution to clear this error

Regards

Venkat

Re: cl_alv_event_data->m_data - Feed Stack Error

RaymondGiuseppi — Tue, 23 Aug 2016 12:52:52 GMT

If you free the parent container, you may be required to free also the ALV grid inside?

Re: cl_alv_event_data->m_data - Feed Stack Error

Former Member — Mon, 29 Aug 2016 07:55:40 GMT

Dear Raymond,

I am clearing both parent container and grid as well. Please find below.

    CALL METHOD g_grid->refresh_table_display.
     CLEAR: g_grid.
     FREE : g_grid.
     CALL METHOD g_custom_container->free.
     CLEAR:g_custom_container.
     FREE:g_custom_container.

Still same error.

Re: cl_alv_event_data->m_data - Feed Stack Error

Former Member — Mon, 29 Aug 2016 09:08:12 GMT

Thank you Sandra,

Issue solved. I re-declared variables globally and issue got solved..

Regards,

Venkat