topic Re: How to work with Function Module Write_List in Application Development and Automation Discussions

How to work with Function Module Write_List

yes_sapteam — Thu, 30 Jul 2009 11:32:13 GMT

Hi.

I searched the forum and the web but I didn't get an answer to my question.

I have a Z program which is called by another Z program.

I would like to use the Function-modules "WRITE_LIST" and "LIST_FROM_MEMORY" but the problem I have is how to work the ABAPLIST type.

I have a table that includes numerous fields and I don't understand how to transfer such a table to ABAPLIST type table.

Any help will be appreciated.

Ayal Telem.

Re: How to work with Function Module Write_List

Former Member — Thu, 30 Jul 2009 11:52:32 GMT

Hi,

Please find the sample code.


data: list_tab type standard table of ABAPLIST with header line.

SUBMIT Zprg
WITH ...
EXPORTING LIST TO MEMORY
 AND RETURN.

    CALL FUNCTION 'LIST_FROM_MEMORY'
      TABLES
        listobject = list_tab
      EXCEPTIONS
        not_found  = 1
        OTHERS     = 2.

    IF sy-subrc = 0.
      CALL FUNCTION 'WRITE_LIST'
        TABLES
          listobject = list_tab.
    ENDIF.

Re: How to work with Function Module Write_List

Former Member — Thu, 30 Jul 2009 12:07:12 GMT

hai,

Refer to the given below code:

report zlist_to_memory.

data: begin of t_listout occurs 0,

line(1024) type c,

end of t_listout.

Submit the report and export list to memory

submit z_reqd_report exporting list to memory

and return.

Get list from memory and convert to ascii

perform retrieve_list_from_memory tables t_listout.

loop at t_listout.

write:/ t_listout.

endloop.

************************************************************************

Procedure to retrieve list from memory

************************************************************************

form retrieve_list_from_memory tables t_reportop.

data: t_list like abaplist occurs 0 with header line.

data: textlines(1024) type c occurs 0 with header line.

clear t_list. refresh t_list.

clear t_reportop. refresh t_reportop.

call function 'LIST_FROM_MEMORY'

tables

listobject = t_list

exceptions

not_found = 1

others = 2.

check sy-subrc = 0.

call function 'LIST_TO_ASCI'

tables

listobject = t_list

listasci = textlines

exceptions

empty_list = 1

list_index_invalid = 2

others = 3.

check sy-subrc = 0.

t_reportop[] = txtlines[].

call function 'LIST_FREE_MEMORY'.

endform.

Re: How to work with Function Module Write_List

Former Member — Thu, 30 Jul 2009 12:07:40 GMT

hai,

Refer to the given below code:

report zlist_to_memory.

data: begin of t_listout occurs 0,

line(1024) type c,

end of t_listout.

Submit the report and export list to memory

submit z_reqd_report exporting list to memory

and return.

Get list from memory and convert to ascii

perform retrieve_list_from_memory tables t_listout.

loop at t_listout.

write:/ t_listout.

endloop.

************************************************************************

Procedure to retrieve list from memory

************************************************************************

form retrieve_list_from_memory tables t_reportop.

data: t_list like abaplist occurs 0 with header line.

data: textlines(1024) type c occurs 0 with header line.

clear t_list. refresh t_list.

clear t_reportop. refresh t_reportop.

call function 'LIST_FROM_MEMORY'

tables

listobject = t_list

exceptions

not_found = 1

others = 2.

check sy-subrc = 0.

call function 'LIST_TO_ASCI'

tables

listobject = t_list

listasci = textlines

exceptions

empty_list = 1

list_index_invalid = 2

others = 3.

check sy-subrc = 0.

t_reportop[] = txtlines[].

call function 'LIST_FREE_MEMORY'.

endform.

Re: How to work with Function Module Write_List

Former Member — Thu, 30 Jul 2009 13:01:38 GMT

Hi Ayal,

data:

itab_list type abaplist.

loop at itab.

w_string = itab-field1.

concatenate itab_list-rfcrecord w_string into itab_list-rfcrecord.

w_string = itab-field2.

concatenate itab_list-rfcrecord w_string into itab_list-rfcrecord.

.... till the last field is appended.

endloop.

itab_list can be passed to the tables parameter LISTOBJECT of the function module WRITE_LIST.

Regards.

Re: How to work with Function Module Write_List

yes_sapteam — Sun, 02 Aug 2009 07:33:35 GMT

Thanks a lot to all who have replied to this thread, but I'm afraid the point was missed - maybe I didn't explained well enough.

My problem is how to map a table with various fields of various types and length, to the ABAPLIST structure.

Should I do a concatenation to the ABAPLIST and than split from it?

Thank you.

Ayal Telem.

Re: How to work with Function Module Write_List

yes_sapteam — Sun, 02 Aug 2009 09:28:47 GMT

Dear Mdi.Deeba.

I tried to follow your code snippet but it looks like nothing is added the the ABAPLIST structure.

Any ideas?

Best regards.

Ayal Telem.

Re: How to work with Function Module Write_List

yes_sapteam — Tue, 04 Aug 2009 07:46:42 GMT

Hi All.

I would like to specify that this thread was not answered, but it shouldn't be.

It looks like I took a wrong approach here.

When I tried to replicate the issue I had and caused me to open this thread I could not, so I have to wait until the issue will re-surface and than I will be able to handle it.

Thank you all.

Ayal Telem.