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SAP 4.7 XML data exchange using XSLT

Hello All,

Hopefully the right place to post such article but here goes any way.

My project involves producing XML files and then reading them back into to SAP internal tables. I am ok with writing SAP data to external XML file but reading it back in is causing a lot of head scratching.

I am able to double click the XML file and it launches Ok in Internet Explorer.

I am also able to debug the xslt file from within SE80 and the correct output is displayed.

However, where I am trying to read the contents of the xml file via the Call Transformation procedure call my output table is not getting populated but instead I am recieving an error message saying the following is not correct:

xmlns:sapxsl="http://www.sap.com/sapxsl

but the above line is placed automaticlly in the XSLT when you create a new one from within SE80.

I am new to SAP ABAP development so not sure what's exactly wrong.

Any help on this issue will be greatfully appreciated. Thanks in Advance,

Wasif

REPORT z_hp_xml_test .

TYPE-POOLS: ixml.

TABLES: tstc, tstct.

TYPES: BEGIN OF ty_transactions,

tcode LIKE tstc-tcode,

ttext LIKE tstct-ttext,

sprsl LIKE tstct-sprsl,

END OF ty_transactions.

DATA: itab_transactions TYPE STANDARD TABLE OF ty_transactions.

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: emp ransactions.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 any errors then disply else convert XML to table

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.

ELSE.


TRY .
CALL TRANSFORMATION (`Z_HP_TEST_XSLT`)
SOURCE XML l_xml_table
RESULT outtab = itab_transactions.

DATA: xslt_err TYPE REF TO cx_xslt_exception .

CATCH cx_xslt_exception INTO xslt_err.

DATA: s TYPE string.
s = xslt_err->get_text( ).
WRITE: ': ', s.
STOP.

ENDTRY .

  • Process the document

IF l_parser->is_dom_generating( ) EQ 'X'.

PERFORM process_dom USING l_document.

ENDIF.

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

Section 3: My XSLT file:

<xsl:transform version="1.0"

xmlns:xsl="http://www.w3.org/1999/XSL/Transform"

xmlns:sapxsl="http://www.sap.com/sapxsl"

<xsl:strip-space elements="*"/>

<xsl:template match="TransList">

<xsl:apply-templates />

</xsl:template>

<xsl:template match="Tcode">

Tcode <xsl:apply-templates />

</xsl:template>

<xsl:template match="ttext">

ttext <xsl:apply-templates />

</xsl:template>

<xsl:template match="sprsl">

sprsl <xsl:apply-templates />

</xsl:template>

</xsl:transform>

Former Member
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