I got a question about compression of files.

I implemented a file upload and download function in webdynpro abap.
but I think it's too heavy if there's no compression function.
So I've been searching the function but i couldn't find it.
is there anybody who knows the function?
thank you for reading.

I solved the problem.
Thanks
Regards,
Jong.
data: lo_gzip type ref to cl_abap_gzip.
data: content type xstring.
data: content_len type i.
create object lo_gzip.
node_z009 = wd_context->get_child_node( name = 'Z009' ).
node_z009->get_static_attributes( importing static_attributes = l_z009 ).
wd_context->get_attribute( exporting name = 'DATA' importing value = l_z009-data ).
content_len = strlen( l_z009-data ).
lo_gzip->compress_text( exporting text_in = L_Z009-DATA TEXT_in_len = content_len compress_level = 6
importing gzip_out = content gzip_out_len = l_z009-len ).
L_Z009-DATA = CONTENT.
wd_comp_controller->upload( EXPORTING DATA = l_z009-data LEN = L_Z009-LEN ).
ANOTHER METHOD
DATA: LO_GZIP TYPE REF TO CL_ABAP_GZIP.
DATA: CONTENT TYPE XSTRING.
CREATE OBJECT LO_GZIP.
node_temp_z009 = wd_context->get_child_node( name = 'TEMP_Z009' ).
select * into table lt_temp_z009 from /dogok/009 where id_f = l_z002-id_f and number_f = l_z002-number_f.
LOOP AT LT_TEMP_Z009 INTO L_TEMP_Z009.
CONTENT = L_TEMP_Z009-DATA.
LO_GZIP->DECOMPRESS_TEXT( EXPORTING GZIP_IN = CONTENT GZIP_IN_LEN = L_TEMP_Z009-LEN
IMPORTING TEXT_OUT = L_TEMP_Z009-DATA TEXT_OUT_LEN = L_TEMP_Z009-LEN ).
MODIFY LT_TEMP_Z009 FROM L_TEMP_Z009.
ENDLOOP.
node_temp_z009->bind_table( lt_temp_z009 ).

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