topic Re: Problem with CL_XML_DOCUMENT_BASE->FIND_NODE method in Application Development and Automation Discussions

Problem with CL_XML_DOCUMENT_BASE->FIND_NODE method

ipravir — Mon, 30 Sep 2019 13:45:13 GMT

Hello Experts,

I there any sample program, where system is trying to fetch node value using FIND_NODE method of class CL_XML_DOCUMENT_BASE. Where importing parameter "NAME" is containing path.

for example:

constant lv_name type string value 'node1/node2/node3/node4'.

lo_xml->find_node( EXPORTING name = lv_name RECEIVING node = DATA(lo_node) ).

And there could be a scenario, where node can contains namespace, as below example,

constant lv_name type string value 'nd:node1/node2/xl:node3/node4'.

lo_xml->find_node( EXPORTING name = lv_name RECEIVING node = DATA(lo_node) ).

Regards,

Praveer.

Re: Problem with CL_XML_DOCUMENT_BASE->FIND_NODE method

Sandra_Rossi — Mon, 30 Sep 2019 13:56:24 GMT

Could you format your two portions of code please? (CODE button) Thanks.

Moreover, is "node1" a child node of the root node of your XML document?

Re: Problem with CL_XML_DOCUMENT_BASE->FIND_NODE method

Sandra_Rossi — Mon, 30 Sep 2019 14:45:13 GMT

Thanks. Note that it's best to edit your question, as "answers" are to be used when you are proposing a solution to the poster's problem (cf SAP explanation below). PS: you may use the native ABAP type XSTRING, avoid edoc_file that nobody knows.

Re: Problem with CL_XML_DOCUMENT_BASE->FIND_NODE method

Sandra_Rossi — Mon, 30 Sep 2019 14:53:50 GMT

The method FIND_NODE of CL_XML_DOCUMENT_BASE is not compatible with namespaces.

What you can do is to use the public attribute M_DOCUMENT which is an instance of the IF_IXML_DOCUMENT interface, which provides the method FIND_FROM_PATH_NS.

I recommend to use the path with a leading / to start at the root node.

The following code should work for "familyns.xml":

DATA(element) = lo_xml->m_document->find_from_path_ns( 
            default_uri = ''
            path        = '/"fm:family"/"fr:father"/son' ).

(pay attention to the quotes around the names with a namespace)

Note that, in "fm:family" of the path parameter, "fm" is not the namespace prefix but the namespace URI, i.e. "fm" in "fm:family" corresponds to the right-hand side of xlmns:fm="fm". Generally, this value is something like "http://..." so we would have something like this:

            path        = '/"http://...fm...:family"/"http://...fr...:father"/son'.

Re: Problem with CL_XML_DOCUMENT_BASE->FIND_NODE method

ipravir — Mon, 30 Sep 2019 14:54:08 GMT

Hi,

Please use below XML format and code.

constant: lc_name type string value 'family/father/son/', OR
          lc_name type string value 
	  l_path TYPE pathextern VALUE ''.
DATA: ex_binary       TYPE XSTRING.
OPEN DATASET l_path FOR INPUT IN BINARY MODE  MESSAGE l_mess .
IF sy-subrc EQ 0.
    READ DATASET l_path INTO ex_binary .
    CLOSE DATASET l_path .
    DATA(lo_xml) = NEW cl_xml_document( ).
    lo_xml->parse_xstring( stream = ex_binary ).
    lo_xml->find_node( EXPORTING name = lc_name 
                       RECEIVING node = DATA(lo_node) ).
    IF lo_node IS BOUND.
      DATA(lv_value) = lo_node->get_value( ).
    ENDIF.
ENDIF.

Please node: if LC_NAME equal to 'son', then logic is working fine and lv_value is returning correct value but my requirement, LC_NAME would be node path as declared.

Find below XML file format with and without namespace.

family.xml:

</family>

familyns.xml:

<fm:family xmlns:fm="fm">

<fr:father xmlns:fr="fr"> <son>Mr. X</son> </fr:father>

</fm:family>

Regards,

Praveer