Download internal table to XSLX on SAP application server

Question

I was struggling with this feature for a longtime and finally found some solution and so thought of listing it:
Here is what I did to download an internal table to xslx format (works for xls aso) :
I found this excellent link that allowed me to download an XSLX file on to local directory and then I added a little more to download to app server.
http://abapblog.com/articles/tricks/33-create-xlsx-mhtml-file-from-internal-table-in-background
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Per this link. once the bin file is prepared, pass it to
  CALL FUNCTION 'HR_CA_DOWNLOAD_TO_APPSERVER'         EXPORTING           filename          = p_file           filesize          = g_size         IMPORTING           bytes_transfered  = len         TABLES           data_tab          = gt_bintab         EXCEPTIONS           invalid_filesize  = 1           no_authority      = 2           dataset_open_error = 3           OTHERS            = 4.
This works for xslx as well as xls

Answer 1

I guess you want to transfer XML document type ref to IF_IXML_DOCUMENT (which is instantiated with this method and stored in attribute M_DOCUMENT ) to a file on application server. Is that right?
If so please refer below program you should get the idea
DATA: gr_ixml TYPE REF TO if_ixml,
      gr_ixml_doc TYPE REF TO if_ixml_document.
gr_ixml = cl_ixml=>create( ).
"here you have the same kind of XML document
"as the one created with method CREATE_WITH_DATA
gr_ixml_doc = gr_ixml->create_document( ). 
DATA  gr_ixml_element TYPE REF TO if_ixml_element.
CALL METHOD gr_ixml_doc->create_element
  EXPORTING
    name = 'JOBS'
  RECEIVING
    rval = gr_ixml_element.
CALL METHOD gr_ixml_doc->append_child
  EXPORTING
    new_child = gr_ixml_element.
CALL METHOD gr_ixml_element->set_attribute
  EXPORTING
    name  = 'OBJID'
    value = '566677890'.
"serialization
DATA g_encoding_type TYPE string.
DATA g_stream_factory TYPE REF TO if_ixml_stream_factory.
DATA gr_encoding TYPE REF TO if_ixml_encoding.
g_stream_factory = gr_ixml->create_stream_factory( ).
gr_encoding = gr_ixml->create_encoding( byte_order = 0
                                       character_set = 'UTF-8' ).
DATA b_xml TYPE xstring.
DATA gr_ostream TYPE REF TO if_ixml_ostream.
gr_ostream = g_stream_factory->create_ostream_xstring( b_xml ).
CALL METHOD gr_ostream->set_encoding
  EXPORTING
    encoding = gr_encoding.
CALL METHOD gr_ixml_doc->render
  EXPORTING
    ostream = gr_ostream
    recursive = 'X'.
DATA g_resize TYPE i.
g_resize = gr_ostream->get_num_written_raw( ).
data ex_tab type table of x255.
CALL FUNCTION 'SCMS_XSTRING_TO_BINARY'
  EXPORTING
    buffer                = b_xml
  tables
    binary_tab            = ex_tab.
"now open file on application server
OPEN DATASET dset FOR OUTPUT IN BINARY MODE.
"and transfer ex_tab to dset
Regards
Marcin