How can I convert IF_IXML_DOCUMENT to STRING?

Question

Hi guys,
is it possible to  convert an XML document (type IF_IXML_DOCUMENT ) to string.
And how to do it?
Thanks in advace!
Regards,
Liying

Answer 1

Hi Wang,
You can use these function modules
TEXT_CONVERT_XML_TO_SAP or
SDIXML_DOM_TO_XML Convert DOM (XML) into string of bytes that can be downloaded to PC or application server
or
SMUM_XML_PARSE (Parse XML docment into a table structure)
You can also refer to these:
SMUM_XML_CREATE (Create XML document from internal table)
SMUM_XML_CREATE_X (Create XSTRING xml doc)
Check this code, it converts an XML data into a string internal table.
REPORT Z_XML_TO_TABLE.
TYPE-POOLS: ixml.
TYPES: BEGIN OF t_xml_line,
data(256) TYPE x,
END OF t_xml_line.
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 'c:\temp\orders_dtd.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.
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.
CASE node->get_type( ).
WHEN if_ixml_node=>co_node_element.
element node
name = node->get_name( ).
nodemap = node->get_attributes( ).
WRITE: / 'ELEMENT :'.
WRITE: AT indent name COLOR COL_POSITIVE INVERSE.
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 :'.
WRITE: AT indent value COLOR COL_GROUP INVERSE.
ENDCASE.
advance to next node
node = iterator->get_next( ).
ENDWHILE.
ENDFORM. "process_dom
Thanks,
Susmitha