Simple Transformation XML to ABAP - error CX_ST_MATCH_ELEMENT

Question

Hi all,
I have a problem with a transformation from xml to abap. My XML file (taken from a pdf file) is
<?xml version="1.0" encoding="iso-8859-1" ?>
- <asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">
- <asx:values>
  <NETWORK>E60000000000</NETWORK>
  <OPERAZIONE>0010</OPERAZIONE>
- <TABELLA>
- <ROW xmlns:xfa="http://www.xfa.org/schema/xfa-data/1.0/" xfa:dataNode="dataGroup">
  <MANDT>300</MANDT>
  <NETWORK>E60000000000</NETWORK>
  <OPERAZIONE>0010</OPERAZIONE>
  <ID_ACT>1</ID_ACT>
  <DESC_ACT>ATTIVITÀ1</DESC_ACT>
  <LONG_TXT></LONG_TXT>
  <MAKE_BUY></MAKE_BUY>
  <WP></WP>
  <EVENTO_TECH></EVENTO_TECH>
  <TIPO_LEGAME></TIPO_LEGAME>
  <CONSEGNA></CONSEGNA>
  </ROW>
- <ROW xmlns:xfa="http://www.xfa.org/schema/xfa-data/1.0/" xfa:dataNode="dataGroup">
  <MANDT>300</MANDT>
  <NETWORK>E60000000000</NETWORK>
  <OPERAZIONE>0010</OPERAZIONE>
  <ID_ACT>2</ID_ACT>
  <DESC_ACT>ATTIVITÀ2</DESC_ACT>
  <LONG_TXT>ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2</LONG_TXT>
  <MAKE_BUY>M</MAKE_BUY>
  <WP></WP>
  <EVENTO_TECH></EVENTO_TECH>
  <TIPO_LEGAME></TIPO_LEGAME>
  <CONSEGNA></CONSEGNA>
  </ROW>
  </TABELLA>
  </asx:values>
  </asx:abap>
my transformation is
<?sap.transform simple?>
<tt:transform xmlns:tt="http://www.sap.com/transformation-templates">
  <tt:root name="ROOT"></tt:root>
  <tt:root name="NETWORK"></tt:root>
  <tt:root name="OPERAZIONE"></tt:root>
  <tt:template>
  <abap>
    <values>
       <network>
           <tt:value ref="NETWORK"></tt:value>
       </network>
       <operazione>
           <tt:value ref="OPERAZIONE"></tt:value>
       </operazione>
       <tabella>
          <tt:loop ref=".ROOT" name="line">
            <mandt>
              <tt:value ref="$line.mandt"></tt:value>
            </mandt>
            <network>
              <tt:value ref="$line.network"></tt:value>
            </network>
            <OPERAZIONE>
              <tt:value ref="$line.OPERAZIONE"></tt:value>
            </OPERAZIONE>
            <ID_ACT>
              <tt:value ref="$line.ID_ACT"></tt:value>
            </ID_ACT>
            <DESC_ACT>
              <tt:value ref="$line.DESC_ACT"></tt:value>
            </DESC_ACT>
            <LONG_TXT>
              <tt:value ref="$line.LONG_TXT"></tt:value>
            </LONG_TXT>
            <MAKE_BUY>
              <tt:value ref="$line.MAKE_BUY"></tt:value>
            </MAKE_BUY>
            <WP>
              <tt:value ref="$line.WP"></tt:value>
            </WP>
            <EVENTO_TECH>
              <tt:value ref="$line.EVENTO_TECH"></tt:value>
            </EVENTO_TECH>
            <TIPO_LEGAME>
              <tt:value ref="$line.TIPO_LEGAME"></tt:value>
            </TIPO_LEGAME>
            <CONSEGNA>
              <tt:value ref="$line.CONSEGNA"></tt:value>
            </CONSEGNA>
         </tt:loop>
        </tabella>
      </values>
    </abap>
  </tt:template>
</tt:transform>
when I execute my code
the system dump with this error
ST_MATCH_FAIL
excep.  CX_ST_MATCH_ELEMENT
  TRY.
            CALL TRANSFORMATION ('ZT_NETWORK')
            SOURCE XML lv_xml_data_string
            RESULT  network = l_network
                    operazione = l_operazione
                    root = it_data_tmp.
          CATCH cx_sy_conversion_data_loss .
          CATCH cx_xslt_exception INTO xslt_error.
            xslt_message = xslt_error->get_text( ).
            WRITE:/ xslt_message .
        ENDTRY.
Any help?
thanks
enzo

Answer 1

Enzo Porcasi wrote:
> I have a problem with a transformation from xml to abap. My XML file (taken from a pdf file) is
>
<?xml version="1.0" encoding="iso-8859-1" ?>
>  <asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">
>  <asx:values>
Your XML is strange, it looks like a mix of pdf form content (xfa) and identity transformation (asx).
Could you explain more ?
Anyway, I tried to find out the errors (not only cx_st_match_element, that was just a catch missing), it works with the following program. Here are the main issues I have found :
- always catch exception class cx_st_error when you use simple transformations (it contains cx_st_match_element and all other simple transformation exceptions)
- xml "asx:abap" and "asx:values" in your input XML are useless, they are only used by identity transformation ("ID"); you may keep them if you want, but I advise you to see why they are in the xml !
- Use same case in your tags (if xml contains  in the transformation so that it corresponds to the input XML
- I renamed all abap names with prefix ABAP_ so that to clearly differentiate xml tags and abap field names (so that it is more easy to understand, for every sdn reader; I hope it will help as I didn't find many threads in the forum).
Simple transformation :
<?sap.transform simple?>
<tt:transform xmlns:tt="http://www.sap.com/transformation-templates">
  <tt:root name="ABAP_NETWORK"></tt:root>
  <tt:root name="ABAP_OPERAZIONE"></tt:root>
  <tt:root name="ABAP_TABELLA"></tt:root>
  <tt:template>
    <ROOT>
      <NETWORK>
        <tt:value ref=".ABAP_NETWORK"></tt:value>
      </NETWORK>
      <OPERAZIONE>
        <tt:value ref=".ABAP_OPERAZIONE"></tt:value>
      </OPERAZIONE>
      <TABELLA>
        <tt:loop ref=".ABAP_TABELLA" name="line">
          <ROW>
            <MANDT>
              <tt:value ref="$line.ABAP_MANDT"></tt:value>
            </MANDT>
            <NETWORK>
              <tt:value ref="$line.ABAP_NETWORK"></tt:value>
            </NETWORK>
            <OPERAZIONE>
              <tt:value ref="$line.ABAP_OPERAZIONE"></tt:value>
            </OPERAZIONE>
            <ID_ACT>
              <tt:value ref="$line.ABAP_ID_ACT"></tt:value>
            </ID_ACT>
            <DESC_ACT>
              <tt:value ref="$line.ABAP_DESC_ACT"></tt:value>
            </DESC_ACT>
            <LONG_TXT>
              <tt:value ref="$line.ABAP_LONG_TXT"></tt:value>
            </LONG_TXT>
            <MAKE_BUY>
              <tt:value ref="$line.ABAP_MAKE_BUY"></tt:value>
            </MAKE_BUY>
            <WP>
              <tt:value ref="$line.ABAP_WP"></tt:value>
            </WP>
            <EVENTO_TECH>
              <tt:value ref="$line.ABAP_EVENTO_TECH"></tt:value>
            </EVENTO_TECH>
            <TIPO_LEGAME>
              <tt:value ref="$line.ABAP_TIPO_LEGAME"></tt:value>
            </TIPO_LEGAME>
            <CONSEGNA>
              <tt:value ref="$line.ABAP_CONSEGNA"></tt:value>
            </CONSEGNA>
          </ROW>
        </tt:loop>
      </TABELLA>
    </ROOT>
  </tt:template>
</tt:transform>
Program and XML included :
REPORT  zsro2.
DATA l_network TYPE string.
DATA l_operazione TYPE string.
DATA : BEGIN OF lt_data_tmp OCCURS 0,
         abap_mandt      TYPE string,
         abap_network    TYPE string,
         abap_operazione TYPE string,
         abap_id_act     TYPE string,
         abap_desc_act   TYPE string,
         abap_long_txt   TYPE string,
         abap_make_buy   TYPE string,
         abap_wp         TYPE string,
         abap_evento_tech TYPE string,
         abap_tipo_legame TYPE string,
         abap_consegna   TYPE string,
       END OF lt_data_tmp.
DATA xslt_error TYPE REF TO cx_xslt_exception.
DATA lo_st_error TYPE REF TO cx_st_error.
DATA lv_xml_data_string TYPE string.
DATA xslt_message TYPE string.
DEFINE conc.
  concatenate lv_xml_data_string &1 into lv_xml_data_string.
END-OF-DEFINITION.
*conc '<?xml version="1.0" encoding="iso-8859-1" ?>'.
*conc '<asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">'.
*conc '  <asx:values>'.
conc ' <ROOT>'.
conc '    <NETWORK>E60000000000</NETWORK> '.
conc '    <OPERAZIONE>0010</OPERAZIONE> '.
conc '    <TABELLA>'.
conc '      <ROW xmlns:xfa="http://www.xfa.org/schema/xfa-data/1.0/" xfa:dataNode="dataGroup">'.
conc '        <MANDT>300</MANDT> '.
conc '        <NETWORK>E60000000000</NETWORK> '.
conc '        <OPERAZIONE>0010</OPERAZIONE> '.
conc '        <ID_ACT>1</ID_ACT> '.
conc '        <DESC_ACT>ATTIVITÀ1</DESC_ACT> '.
conc '        <LONG_TXT></LONG_TXT> '.
conc '        <MAKE_BUY></MAKE_BUY> '.
conc '        <WP></WP> '.
conc '        <EVENTO_TECH></EVENTO_TECH> '.
conc '        <TIPO_LEGAME></TIPO_LEGAME> '.
conc '        <CONSEGNA></CONSEGNA> '.
conc '      </ROW>'.
conc '      <ROW xmlns:xfa="http://www.xfa.org/schema/xfa-data/1.0/" xfa:dataNode="dataGroup">'.
conc '        <MANDT>300</MANDT> '.
conc '        <NETWORK>E60000000000</NETWORK> '.
conc '        <OPERAZIONE>0010</OPERAZIONE> '.
conc '        <ID_ACT>2</ID_ACT> '.
conc '        <DESC_ACT>ATTIVITÀ2</DESC_ACT> '.
conc '        <LONG_TXT>ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2 ATTIVITÀ2</LONG_TXT> '.
conc '        <MAKE_BUY>M</MAKE_BUY> '.
conc '        <WP></WP> '.
conc '        <EVENTO_TECH></EVENTO_TECH> '.
conc '        <TIPO_LEGAME></TIPO_LEGAME> '.
conc '        <CONSEGNA></CONSEGNA> '.
conc '      </ROW>'.
conc '    </TABELLA>'.
conc ' </ROOT>'.
*conc '  </asx:values>'.
*conc '</asx:abap>'.
DATA lv_xml_data_string_2 TYPE string.
TRY.
    CALL TRANSFORMATION zsro
          SOURCE
            XML lv_xml_data_string
          RESULT
            abap_network    = l_network
            abap_operazione = l_operazione
            abap_tabella    = lt_data_tmp[].
  CATCH cx_sy_conversion_data_loss .
  CATCH cx_st_error INTO lo_st_error.
    xslt_message = lo_st_error->get_text( ).
    WRITE:/ xslt_message .
  CATCH cx_xslt_exception INTO xslt_error.
    xslt_message = xslt_error->get_text( ).
    WRITE:/ xslt_message .
ENDTRY.
BREAK-POINT.