Urgent : XML File to ABAP

Question

Hi Experts,
My requirement is I have to process one XML file(idoc) in ABAP program and to store the contents of the XML file in internal table.
Pls help.
Any Useful inputs on this will be rewarded with points.
Rgds,
Lakshmiraj.A

Answer 1

Check this code.
if you are not comfortable with XSLT do the following
1. read the xml into a string
2. convert the string to xstring using SCMS_STRING_TO_XSTRING
3. now use FM SMUM_XML_PARSE and pass the xstring xml_input parameter of that function.
this will parse the whole xml and give you an itab of element name value pairs which you can read easily
As i told you, the ABAP CALL TARNSFORMATION command is very simple (with F1 help you will deal with it).
But if you don't know the XLST language perphaps you should use the moderator advice. An example wouldn't help you at this time because it's not that easy to adapt it.
I've commented several lines. Here is an example:
*& Report z_xit_xml_check
report z_xit_xml_check.
class cl_ixml definition load.
type-pools: ixml.
types: begin of t_xml_line,
data(256) type x,
end of t_xml_line,
begin of tsfixml,
data(1024) type c,
end of tsfixml.
data: l_ixml type ref to if_ixml,
l_streamfactory type ref to if_ixml_stream_factory,
l_parser type ref to if_ixml_parser,
l_istream type ref to if_ixml_istream,
l_document type ref to if_ixml_document,
l_node type ref to if_ixml_node,
l_xmldata type string.
data: l_elem type ref to if_ixml_element,
l_root_node type ref to if_ixml_node,
l_next_node type ref to if_ixml_node,
l_name type string,
l_iterator type ref to if_ixml_node_iterator.
data: l_xml_table type table of t_xml_line,
l_xml_line type t_xml_line,
l_xml_table_size type i.
data: l_filename type string.
parameters: pa_file type char1024 default
'd:\joao\desenvolvimentos\fi\fact\teste.xml'.
Validation of XML file: Only DTD included in xml document is supported
parameters: pa_val type char1 as checkbox.
start-of-selection.
Creating the main iXML factory
l_ixml = cl_ixml=>create( ).
Creating a stream factory
l_streamfactory = l_ixml->create_stream_factory( ).
perform get_xml_table changing l_xml_table_size l_xml_table.
wrap the table containing the file into a stream
l_istream = l_streamfactory->create_istream_itable( table =
l_xml_table
size =
l_xml_table_size ).
Creating a document
l_document = l_ixml->create_document( ).
Create a Parser
l_parser = l_ixml->create_parser( stream_factory = l_streamfactory
istream = l_istream
document = l_document ).
Validate a document
if pa_val eq 'X'.
l_parser->set_validating( mode = if_ixml_parser=>co_validate ).
endif.
Parse the stream
if l_parser->parse( ) ne 0.
if l_parser->num_errors( ) ne 0.
data: parseerror type ref to if_ixml_parse_error,
str type string,
i type i,
count type i,
index type i.
count = l_parser->num_errors( ).
write: count, ' parse errors have occured:'.
index = 0.
while index < count.
parseerror = l_parser->get_error( index = index ).
i = parseerror->get_line( ).
write: 'line: ', i.
i = parseerror->get_column( ).
write: 'column: ', i.
str = parseerror->get_reason( ).
write: str.
index = index + 1.
endwhile.
endif.
endif.
Process the document
if l_parser->is_dom_generating( ) eq 'X'.
perform process_dom using l_document.
endif.
*& Form get_xml_table
form get_xml_table changing l_xml_table_size type i
l_xml_table type standard table.
Local variable declaration
data: l_len type i,
l_len2 type i,
l_tab type tsfixml,
l_content type string,
l_str1 type string,
c_conv TYPE REF TO cl_abap_conv_in_ce,
l_itab type table of string.
l_filename = pa_file.
upload a file from the client's workstation
call method cl_gui_frontend_services=>gui_upload
exporting
filename = l_filename
filetype = 'BIN'
importing
filelength = l_xml_table_size
changing
data_tab = l_xml_table
exceptions
others = 19.
if sy-subrc 0.
message id sy-msgid type sy-msgty number sy-msgno
with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
endif.
Writing the XML document to the screen
CLEAR l_str1.
LOOP AT l_xml_table INTO l_xml_line.
c_conv = cl_abap_conv_in_ce=>create( input = l_xml_line-data
*replacement = space ).
c_conv->read( IMPORTING data = l_content len = l_len ).
CONCATENATE l_str1 l_content INTO l_str1.
ENDLOOP.
l_str1 = l_str1+0(l_xml_table_size).
SPLIT l_str1 AT cl_abap_char_utilities=>cr_lf INTO TABLE l_itab.
WRITE: /.
WRITE: /' XML File'.
WRITE: /.
LOOP AT l_itab INTO l_str1.
REPLACE ALL OCCURRENCES OF cl_abap_char_utilities=>horizontal_tab
*IN
l_str1 WITH space.
WRITE: / l_str1.
ENDLOOP.
WRITE: /.
endform. "get_xml_table
*& Form process_dom
form process_dom using document type ref to if_ixml_document.
data: node type ref to if_ixml_node,
iterator type ref to if_ixml_node_iterator,
nodemap type ref to if_ixml_named_node_map,
attr type ref to if_ixml_node,
name type string,
prefix type string,
value type string,
indent type i,
count type i,
index type i.
data: name2 type string,
name_root type string,
node_parent type ref to if_ixml_node,
node_root type ref to if_ixml_node,
num_children type i.
node ?= document.
check not node is initial.
uline.
write: /.
write: /' DOM-TREE'.
write: /.
if node is initial. exit. endif.
create a node iterator
iterator = node->create_iterator( ).
get current node
node = iterator->get_next( ).
loop over all nodes
while not node is initial.
indent = node->get_height( ) * 2.
indent = indent + 20.
num_children = node->num_children( ).
case node->get_type( ).
when if_ixml_node=>co_node_element.
element node
name = node->get_name( ).
nodemap = node->get_attributes( ).
node_root = node->get_root( ).
name_root = node_root->get_name( ).
write: / 'ELEMENT :'.
write: at indent name color col_positive inverse.
write: 'NUM_CHILDREN:', num_children.
write: 'ROOT:', name_root.
node_parent = node->get_parent( ).
name2 = node_parent->get_name( ).
write: 'NAME2: ' , name2.
if not nodemap is initial.
attributes
count = nodemap->get_length( ).
do count times.
index = sy-index - 1.
attr = nodemap->get_item( index ).
name = attr->get_name( ).
prefix = attr->get_namespace_prefix( ).
value = attr->get_value( ).
write: / 'ATTRIBUTE:'.
write: at indent name color col_heading inverse, '=',
value color col_total inverse.
enddo.
endif.
when if_ixml_node=>co_node_text or
if_ixml_node=>co_node_cdata_section.
text node
value = node->get_value( ).
write: / 'VALUE :'.
mjprocha
node_parent = node->get_parent( ).
write: at indent value color col_group inverse.
name2 = node_parent->get_name( ).
write: 'NAME2: ' , name2.
endcase.
advance to next node
node = iterator->get_next( ).
endwhile.
endform. "process_dom
Also, check this blog:
/people/r.eijpe/blog/2005/11/21/xml-dom-processing-in-abap-part-ii--convert-an-xml-file-into-an-abap-table-using-sap-dom-approach
Hope this resolves your query.
Reward all the helpful answers.
Regards
Edited by: sharad narayan on Apr 4, 2008 8:23 AM