ABAP mapping XML inside another XML

Question

<b>Cross posted to ABAP Objects</b>
From XI we want to make an abap mapping.
The input xml looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<ns0:mt_dummy xmlns:ns0="http://kmd.dk/phh/externalEventEngine/pfhaen">
<details>
<Navn>Nielsen</Navn>
<Adresse><![CDATA[><?xml version="1.0" encoding="UTF-8"?><ns0:mt_dummy2 xmlns:ns0="http://kmd.dk/phh/externalEventEngine/pfhaen"><Details2><Vej>tingvej</Vej><Husnr>75</Husnr></Details2></ns0:mt_dummy2>]]></Adresse>
</details>
</ns0:mt_dummy>
One of the fields in this structure <Adresse> contains another xml structure. It is this structure we want as a result of our ABAP mapping. First we get the value of the field <Adresse>. This field contains the actual xml structure that we want to map. We convert the structure to xstring and run it through a new parser and create our output document.(See code below).
The code works fine if we just use a ‘normal’ xml structure, but when one of the fields contains a XML structure and we want to parse this structure, we get the error. Is there anything we have missed, or is this not possible in ABAP mapping ?
If we test the code with SXI_MAPPING_TEST we get no errors, but in runtime we get the following error in SXMB_MONI:
‘The XML page document can not be shown
The XML document must have an element at the top level’
method IF_MAPPING~EXECUTE.
initialize xml
type-pools: ixml.
class cl_ixml definition load.
*create main factory
data: ixmlfactory type ref to if_ixml.
ixmlfactory = cl_ixml=>create( ).
*create stream factory
data: streamfactory type ref to if_ixml_stream_factory.
streamfactory = ixmlfactory->create_stream_factory( ).
*create input stream
data: istream type ref to if_ixml_istream.
istream = streamfactory->create_istream_xstring( source ).
*initialize input document
data: idocument type ref to if_ixml_document.
idocument = ixmlfactory->create_document( ).
*parse input document
data: iparser type ref to if_ixml_parser.
iparser = ixmlfactory->create_parser( stream_factory = streamfactory
istream = istream
document = idocument ).
iparser->parse( ).
data: pnode type ref to if_ixml_node,
pnode2 type ref to if_ixml_node,
pnode3 type ref to if_ixml_node.
data: l_blob type string,
l_xml type string,
l_length type i.
pnode = idocument.
pnode2 = pnode->get_first_child( ).
pnode2 = pnode2->get_first_child( ).
pnode2 = pnode2->get_last_child( ).
l_blob = pnode2->get_value( ).
data: l_blob2 type xstring.
CALL FUNCTION 'SCMS_STRING_TO_XSTRING'
EXPORTING
TEXT = l_blob
MIMETYPE = ' '
ENCODING =
IMPORTING
BUFFER = l_blob2
EXCEPTIONS
FAILED = 1
OTHERS = 2
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
*2. parse
*create main factory
data: ixmlfactory2 type ref to if_ixml.
ixmlfactory2 = cl_ixml=>create( ).
*create stream factory
data: streamfactory2 type ref to if_ixml_stream_factory.
streamfactory2 = ixmlfactory2->create_stream_factory( ).
*create input stream
data: istream2 type ref to if_ixml_istream.
istream2 = streamfactory2->create_istream_xstring( l_blob2 ).
*initialize input document
data: idocument2 type ref to if_ixml_document.
idocument2 = ixmlfactory2->create_document( ).
*parse input document
data: iparser2 type ref to if_ixml_parser.
iparser2 = ixmlfactory2->create_parser( stream_factory = streamfactory2
istream = istream2
document = idocument2 ).
iparser2->parse( ).
data: odocument type ref to if_ixml_document.
odocument = idocument2.
data: irc type i.
*render document----
*create output stream
data: ostream type ref to if_ixml_ostream.
ostream = streamfactory2->create_ostream_xstring( result ).
*create renderer
data: renderer type ref to if_ixml_renderer.
renderer = ixmlfactory2->create_renderer( ostream = ostream
document = odocument ).
irc = renderer->render( ).
endmethod.

Answer 1

Hey,
It seems like the output is not a valid XML,
(I guess that the input XML is different from your test).
XML must have one element at the top level,
for example:
<A>
Ilan
</A>
<B>
Shani
</B>
is not a valid XML,
A valid XML should look like:
<mt_dummy>
<A>
Ilan
</A>
<B>
Shani
</B>
</mt_dummy>
In order to see the in-valid XML, press on the right-click mouse on the i.e error text,
and chose "view source".