XML - DOM

Former Member — Mon, 12 Nov 2007 01:30:18 GMT

Hi,

I am using DOM method to parse the XML file. It is working fine. But in some cases I need to get type value also in a node.

For example consider a node....

<nodexx type="zzzzzz"> yyyyy </nodexx>.

In this case I am able to get the node name (nodexx in the above sample) using method get_name( ) and the value (yyyyy in the above sample) using method get_value( ).

How can I get the value of the type mentioned in the xml which is zzzzzz. (I tried checking the method get_type() but in this case it is a custom value)

Thanks,

Krish

Re: XML - DOM

uwe_schieferstein — Mon, 12 Nov 2007 04:51:40 GMT

Hello Krishan

Perhaps the sample report <b>T_PARSING_DOM</b> (package <b>SIXML_TEST</b>) may be helpful for you.

*&---------------------------------------------------------------------*
*& Report  T_DOM_PARSING                                               *
*&                                                                     *
*&---------------------------------------------------------------------*
*& Shows xml DOM parsing using the iXML DOM parser                     *
*&                                                                     *
*&---------------------------------------------------------------------*
REPORT t_dom_parsing  LINE-SIZE 512.
SET EXTENDED CHECK OFF.

*************************************************************
* macros
*
DEFINE xml.
  concatenate xmldata &1 into xmldata.
  write: / 'XML:', &1 color col_positive inverse.
END-OF-DEFINITION.

*************************************************************
* global data
*
DATA: ixml            TYPE REF TO if_ixml,
      streamfactory   TYPE REF TO if_ixml_stream_factory,
      parser          TYPE REF TO if_ixml_parser,
      istream         TYPE REF TO if_ixml_istream,
      document        TYPE REF TO if_ixml_document,
      node            TYPE REF TO if_ixml_node,
      xmldata         TYPE string.


*************************************************************
* xml document
*
START-OF-SELECTION.
  WRITE: /.
  WRITE: / 'XML-Document to parse'.
  WRITE: /.
  xml '<?xml version="1.0"?>'.
  xml '<order number="4711">'.
  xml '   <head>'.
  xml '     <status>confirmed</status>'.
  xml '     <date format="mm/dd/yyyy">08/15/1999</date>'.
  xml '   </head>'.
  xml '   <body>'.
  xml '     <item pos="10" units="2" price="17">abap-book  </item>'.
  xml '     <item pos="20" units="1" price="10">sapr3-cdrom</item>'.
  xml '     <item pos="30" units="5" price="12">coffee     </item>'.
  xml '   </body>'.
  xml '</order>'.

*************************************************************
* xml partsing preparation
*

* create the ixml main factory
  ixml = cl_ixml=>create( ).

* create a stream factory
  streamfactory = ixml->create_stream_factory( ).

* create a input stream
  istream  = streamfactory->create_istream_string( string = xmldata ).

* create a ixml document
  document = ixml->create_document( ).

* create a xml parser
  parser  = ixml->create_parser( document       = document
                                 stream_factory = streamfactory
                                 istream        = istream ).

* parse the xml document into DOM tree
  IF parser->parse( ) <> 0.
    PERFORM process_errors USING parser.
    EXIT.
  ELSE.
    node ?= document.
    PERFORM print_dom USING node.
  ENDIF.



*&---------------------------------------------------------------------*
*&      Form  process_errors
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*      -->P_PARSER  text
*----------------------------------------------------------------------*
FORM process_errors  USING p_parser TYPE REF TO if_ixml_parser.
  DATA: error  TYPE REF TO if_ixml_parse_error,
        msg    TYPE string,
        count  TYPE i,
        index  TYPE i,
        off    TYPE i.

  WRITE: /.
  WRITE: / 'PARSER-ERRORS'.

  count = p_parser->num_errors( min_severity = if_ixml_parse_error=>co_warning ).
  CHECK count <> 0.
* write error messages
  DO count TIMES.
    index  = sy-index - 1.
    error  = p_parser->get_error( index = index
                                  min_severity = if_ixml_parse_error=>co_warning ).
    msg    = error->get_reason( ).
    off    = error->get_offset( ).
    if error->get_severity( ) = if_ixml_parse_error=>co_warning.
       WRITE: / 'warn :', msg COLOR COL_GROUP    INVERSE, off.
    else.
       WRITE: / 'error:', msg COLOR COL_NEGATIVE INVERSE, off.
    endif.
  ENDDO.
ENDFORM.                    " process_errors
*---------------------------------------------------------------------*
*       FORM print_tree                                               *
*---------------------------------------------------------------------*
*       ........                                                      *
*---------------------------------------------------------------------*
FORM print_dom USING node TYPE REF TO if_ixml_node.
  DATA: 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.

  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: / 'TEXT     :'.
        WRITE: AT indent value COLOR COL_GROUP INVERSE.
    ENDCASE.
*   advance to next node
    node = iterator->get_next( ).
  ENDWHILE.
ENDFORM.                    "traverse_dom

Regards

Uwe

Re: XML - DOM

Former Member — Mon, 12 Nov 2007 13:03:43 GMT

Hi Krishnan Venkataraman ,

check the following thread :

cheers!

gyanaraj

****Pls reward points if u find this helpful

Re: XML - DOM

Former Member — Mon, 12 Nov 2007 16:20:57 GMT

Thanks guys.. I got the type under attributes.

Thanks,

Krish

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