Simple Transformation to deserialize an XML file into ABAP data structures?

I'm attempting to write my first simple transformation to deserialize
an XML file into ABAP data structures and I have a few questions.
My simple transformation contains code like the following
<tt:transform xmlns:tt="http://www.sap.com/transformation-templates"
              xmlns:pp="http://www.sap.com/abapxml/types/defined" >
<tt:type name="REPORT" line-type="?">
  <tt:node name="COMPANY_ID" type="C" length="10" />
  <tt:node name="JOB_ID" type="C" length="20" />
  <tt:node name="TYPE_CSV" type="C" length="1" />
  <tt:node name="TYPE_XLS" type="C" length="1" />
  <tt:node name="TYPE_PDF" type="C" length="1" />
  <tt:node name="IS_NEW" type="C" length="1" />
</tt:type>
<tt:root name="ROOT2" type="pp:REPORT" />
    <QueryResponse>
    <tt:loop ref="ROOT2" name="line">
      <QueryResponseRow>
        <CompanyID>
          <tt:value ref="$line.COMPANY_ID" />
        </CompanyID>
        <JobID>
          <tt:value ref="$line.JOB_ID" />
        </JobID>
        <ExportTypes>
          <tt:loop>
            <ExportType>
               I don't know what to do here (see item 3, below)
            </ExportType>
          </tt:loop>
        </ExportTypes>
        <IsNew>
          <tt:value ref="$line.IS_NEW"
          map="val(' ') = xml('false'), val('X') = xml('true')" />
        </IsNew>
      </QueryResponseRow>
      </tt:loop>
    </QueryResponse>
    </tt:loop>
1. In a DTD, an element can be designated as occurring zero or one
time, zero or more times, or one or more times. How do I write the
simple transformation to accommodate these possibilities?
2. In trying to accommodate the "zero or more times" case, I am trying
to use the <tt:loop> instruction. It occurs several layers deep in the
XML hierarchy, but at the top level of the ABAP table. The internal
table has a structure defined in the ABAP program, not in the data
dictionary. In the simple transformation, I used <tt:type> and
<tt:node> to define the structure of the internal table and then
tried to use <tt:loop ref="ROOT2" name="line"> around the subtree that
can occur zero or more times. But every variation I try seems to get
different errors. Can anyone supply a working example of this?
3. Among the fields in the internal table, I've defined three
one-character fields named TYPE_CSV, TYPE_XLS, and TYPE_PDF. In the
XML file, I expect zero to three elements of the form
<ExportType exporttype='csv' />
<ExportType exporttype='xls' />
<ExportType exporttype='pdf' />
I want to set field TYPE_CSV = 'X' if I find an ExportType element
with its exporttype attribute set to 'csv'. I want to set field
TYPE_XLS = 'X' if I find an ExportType element with its exporttype
attribute set to 'xls'. I want to set field TYPE_PDF = 'X' if I find
an ExportType element with its exporttype attribute set to 'pdf'. How
can I do that?
4. For an element that has a value like
<ErrorCode>123</ErrorCode>
in the simple transformation, the sequence
<ErrorCode>  <tt:value ref="ROOT1.CODE" />  </ErrorCode>
seems to work just fine.
I have other situations where the XML reads
<IsNew value='true' />
I wanted to write
<IsNew>
        <tt:value ref="$line.IS_NEW"
        map="val(' ') = xml('false'), val('X') = xml('true')" />
       </IsNew>
but I'm afraid that the <tt:value> fails to deal with the fact that in
the XML file the value is being passed as the value of an attribute
(named "value"), rather than the value of the element itself. How do
you handle this?

Try this code below:
data  l_xml_table2  type table of xml_line with header line.
W_filename - This is a Path.
  if w_filename(02) = '
    open dataset w_filename for output in binary mode.
    if sy-subrc = 0.
      l_xml_table2[] = l_xml_table[].
      loop at l_xml_table2.
        transfer l_xml_table2 to w_filename.
      endloop.
    endif.
    close dataset w_filename.
  else.
    call method cl_gui_frontend_services=>gui_download
      exporting
        bin_filesize = l_xml_size
        filename     = w_filename
        filetype     = 'BIN'
      changing
        data_tab     = l_xml_table
      exceptions
        others       = 24.
    if sy-subrc <> 0.
      message id sy-msgid type sy-msgty number sy-msgno
                 with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
    endif.

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    "XSU can only store data in a single table. You can store XML across tables, however, by using the Oracle XSLT processor to transform a document into multiple documents and inserting them separately. You can also define views over multiple tables and perform insertions into the views. If a view is non-updatable (because of complex joins), then you can use INSTEAD OF triggers over the views to perform the inserts."
    http://download-west.oracle.com/docs/cd/B19306_01/appdev.102/b14252/adx_j_xsu.htm#i1007013

  • How to load a XML file into a table

    Hi,
    I've been working on Oracle for many years but for the first time I was asked to load a XML file into a table.
    As an example, I've found this on the web, but it doesn't work
    Can someone tell me why? I hoped this example could help me.
    the file acct.xml is this:
    <?xml version="1.0"?>
    <ACCOUNT_HEADER_ACK>
    <HEADER>
    <STATUS_CODE>100</STATUS_CODE>
    <STATUS_REMARKS>check</STATUS_REMARKS>
    </HEADER>
    <DETAILS>
    <DETAIL>
    <SEGMENT_NUMBER>2</SEGMENT_NUMBER>
    <REMARKS>rp polytechnic</REMARKS>
    </DETAIL>
    <DETAIL>
    <SEGMENT_NUMBER>3</SEGMENT_NUMBER>
    <REMARKS>rp polytechnic administration</REMARKS>
    </DETAIL>
    <DETAIL>
    <SEGMENT_NUMBER>4</SEGMENT_NUMBER>
    <REMARKS>rp polytechnic finance</REMARKS>
    </DETAIL>
    <DETAIL>
    <SEGMENT_NUMBER>5</SEGMENT_NUMBER>
    <REMARKS>rp polytechnic logistics</REMARKS>
    </DETAIL>
    </DETAILS>
    <HEADER>
    <STATUS_CODE>500</STATUS_CODE>
    <STATUS_REMARKS>process exception</STATUS_REMARKS>
    </HEADER>
    <DETAILS>
    <DETAIL>
    <SEGMENT_NUMBER>20</SEGMENT_NUMBER>
    <REMARKS> base polytechnic</REMARKS>
    </DETAIL>
    <DETAIL>
    <SEGMENT_NUMBER>30</SEGMENT_NUMBER>
    </DETAIL>
    <DETAIL>
    <SEGMENT_NUMBER>40</SEGMENT_NUMBER>
    <REMARKS> base polytechnic finance</REMARKS>
    </DETAIL>
    <DETAIL>
    <SEGMENT_NUMBER>50</SEGMENT_NUMBER>
    <REMARKS> base polytechnic logistics</REMARKS>
    </DETAIL>
    </DETAILS>
    </ACCOUNT_HEADER_ACK>
    For the two tags HEADER and DETAILS I have the table:
    create table xxrp_acct_details(
    status_code number,
    status_remarks varchar2(100),
    segment_number number,
    remarks varchar2(100)
    before I've created a
    create directory test_dir as 'c:\esterno'; -- where I have my acct.xml
    and after, can you give me a script for loading data by using XMLTABLE?
    I've tried this but it doesn't work:
    DECLARE
    acct_doc xmltype := xmltype( bfilename('TEST_DIR','acct.xml'), nls_charset_id('AL32UTF8') );
    BEGIN
    insert into xxrp_acct_details (status_code, status_remarks, segment_number, remarks)
    select x1.status_code,
            x1.status_remarks,
            x2.segment_number,
            x2.remarks
    from xmltable(
      '/ACCOUNT_HEADER_ACK/HEADER'
      passing acct_doc
      columns header_no      for ordinality,
              status_code    number        path 'STATUS_CODE',
              status_remarks varchar2(100) path 'STATUS_REMARKS'
    ) x1,
    xmltable(
      '$d/ACCOUNT_HEADER_ACK/DETAILS[$hn]/DETAIL'
      passing acct_doc as "d",
              x1.header_no as "hn"
      columns segment_number number        path 'SEGMENT_NUMBER',
              remarks        varchar2(100) path 'REMARKS'
    ) x2
    END;
    This should allow me to get something like this:
    select * from xxrp_acct_details;
    Statuscode status remarks segement remarks
    100 check 2 rp polytechnic
    100 check 3 rp polytechnic administration
    100 check 4 rp polytechnic finance
    100 check 5 rp polytechnic logistics
    500 process exception 20 base polytechnic
    500 process exception 30
    500 process exception 40 base polytechnic finance
    500 process exception 50 base polytechnic logistics
    but I get:
    Error report:
    ORA-06550: line 19, column 11:
    PL/SQL: ORA-00932: inconsistent datatypes: expected - got NUMBER
    ORA-06550: line 4, column 2:
    PL/SQL: SQL Statement ignored
    06550. 00000 -  "line %s, column %s:\n%s"
    *Cause:    Usually a PL/SQL compilation error.
    and if I try to change the script without using the column HEADER_NO to keep track of the header rank inside the document:
    DECLARE
    acct_doc xmltype := xmltype( bfilename('TEST_DIR','acct.xml'), nls_charset_id('AL32UTF8') );
    BEGIN
    insert into xxrp_acct_details (status_code, status_remarks, segment_number, remarks)
    select x1.status_code,
            x1.status_remarks,
            x2.segment_number,
            x2.remarks
    from xmltable(
      '/ACCOUNT_HEADER_ACK/HEADER'
      passing acct_doc
      columns status_code    number        path 'STATUS_CODE',
              status_remarks varchar2(100) path 'STATUS_REMARKS'
    ) x1,
    xmltable(
      '/ACCOUNT_HEADER_ACK/DETAILS'
      passing acct_doc
      columns segment_number number        path 'SEGMENT_NUMBER',
              remarks        varchar2(100) path 'REMARKS'
    ) x2
    END;
    I get this message:
    Error report:
    ORA-19114: error during parsing the XQuery expression: 
    ORA-06550: line 1, column 13:
    PLS-00201: identifier 'SYS.DBMS_XQUERYINT' must be declared
    ORA-06550: line 1, column 7:
    PL/SQL: Statement ignored
    ORA-06512: at line 4
    19114. 00000 -  "error during parsing the XQuery expression: %s"
    *Cause:    An error occurred during the parsing of the XQuery expression.
    *Action:   Check the detailed error message for the possible causes.
    My oracle version is 10gR2 Express Edition
    I do need a script for loading xml files into a table as soon as possible, Give me please a simple example for understanding and that works on 10gR2 Express Edition
    Thanks in advance!

    The reason your first SQL statement
    select x1.status_code,
            x1.status_remarks,
            x2.segment_number,
            x2.remarks
    from xmltable(
      '/ACCOUNT_HEADER_ACK/HEADER'
      passing acct_doc
      columns header_no      for ordinality,
              status_code    number        path 'STATUS_CODE',
              status_remarks varchar2(100) path 'STATUS_REMARKS'
    ) x1,
    xmltable(
      '$d/ACCOUNT_HEADER_ACK/DETAILS[$hn]/DETAIL'
      passing acct_doc as "d",
              x1.header_no as "hn"
      columns segment_number number        path 'SEGMENT_NUMBER',
              remarks        varchar2(100) path 'REMARKS'
    ) x2
    returns the error you noticed
    PL/SQL: ORA-00932: inconsistent datatypes: expected - got NUMBER
    is because Oracle is expecting XML to be passed in.  At the moment I forget if it requires a certain format or not, but it is simply expecting the value to be wrapped in simple XML.
    Your query actually runs as is on 11.1 as Oracle changed how that functionality worked when 11.1 was released.  Your query runs slowly, but it does run.
    As you are dealing with groups, is there any way the input XML can be modified to be like
    <ACCOUNT_HEADER_ACK>
    <ACCOUNT_GROUP>
    <HEADER>....</HEADER>
    <DETAILS>....</DETAILS>
    </ACCOUNT_GROUP>
      <ACCOUNT_GROUP>
      <HEADER>....</HEADER>
      <DETAILS>....</DETAILS>
      </ACCOUNT_GROUP>
    </ACCOUNT_HEADER_ACK>
    so that it is easier to associate a HEADER/DETAILS combination?  If so, it would make parsing the XML much easier.
    Assuming the answer is no, here is one hack to accomplish your goal
    select x1.status_code,
            x1.status_remarks,
            x3.segment_number,
            x3.remarks
    from xmltable(
      '/ACCOUNT_HEADER_ACK/HEADER'
      passing acct_doc
      columns header_no      for ordinality,
              status_code    number        path 'STATUS_CODE',
              status_remarks varchar2(100) path 'STATUS_REMARKS'
    ) x1,
    xmltable(
      '$d/ACCOUNT_HEADER_ACK/DETAILS'
      passing acct_doc as "d",
      columns detail_no      for ordinality,
              detail_xml     xmltype       path 'DETAIL'
    ) x2,
    xmltable(
      'DETAIL'
      passing x2.detail_xml
      columns segment_number number        path 'SEGMENT_NUMBER',
              remarks        varchar2(100) path 'REMARKS') x3
    WHERE x1.header_no = x2.detail_no;
    This follows the approach you started with.  Table x1 creates a row for each HEADER node and table x2 creates a row for each DETAILS node.  It assumes there is always a one and only one association between the two.  I use table x3, which is joined to x2, to parse the many DETAIL nodes.  The WHERE clause then joins each header row to the corresponding details row and produces the eight rows you are seeking.
    There is another approach that I know of, and that would be using XQuery within the XMLTable.  It should require using only one XMLTable but I would have to spend some time coming up with that solution and I can't recall whether restrictions exist in 10gR2 Express Edition compared to what can run in 10.2 Enterprise Edition for XQuery.

  • "PLS-00172: string literal too long" When Writing XML file into a Table

    Hi.
    I'm using DBMS_XMLStore to get a XML file into a db table. See the example below, I'm using that for my PL/SQL format. Problem is that because there're too many XML elements that I use in "xmldoc CLOB:= ...", I get "PLS-00172: string literal too long" error.
    Can someone suggest a workaround?
    THANKS!!!
    DECLARE
    insCtx DBMS_XMLStore.ctxType;
    rows NUMBER;
    xmldoc CLOB :=
    '<ROWSET>
    <ROW num="1">
    <EMPNO>7369</EMPNO>
    <SAL>1800</SAL>
    <HIREDATE>27-AUG-1996</HIREDATE>
    </ROW>
    <ROW>
    <EMPNO>2290</EMPNO>
    <SAL>2000</SAL>
    <HIREDATE>31-DEC-1992</HIREDATE>
    </ROW>
    </ROWSET>';
    BEGIN
    insCtx := DBMS_XMLStore.newContext('scott.emp'); -- get saved context
    DBMS_XMLStore.clearUpdateColumnList(insCtx); -- clear the update settings
    -- set the columns to be updated as a list of values
    DBMS_XMLStore.setUpdateColumn(insCtx,'EMPNO');
    DBMS_XMLStore.setUpdateColumn(insCtx,'SAL');
    DBMS_XMLStore.setUpdatecolumn(insCtx,'HIREDATE');
    -- Now insert the doc.
    -- This will only insert into EMPNO, SAL and HIREDATE columns
    rows := DBMS_XMLStore.insertXML(insCtx, xmlDoc);
    -- Close the context
    DBMS_XMLStore.closeContext(insCtx);
    END;
    /

    You ask where am getting the XML doc. Well, am not
    getting the doc itself.I either don't understand or I disagree. In your sample code, you're certainly creating an XML document-- your local variable "xmldoc" is an XML document.
    DBMS_XMLSTORE package needs
    to know the canonical format and that's what I
    hardcoded. Again, I either don't understand or I disagree... DBMS_XMLStore more or less assumes the format of the XML document itself-- there's a ROWSET tag, a ROW tag, and a then whatever column tags you'd like. You can override what tag identifies a row, but the rest is pretty much assumed. Your calls to setUpdateColumn identifies what subset of column tags in the XML document you're interested in.
    Later in code I use
    DBMS_XMLStore.setUpdateColumn to specify which
    columns are to be inserted.Agreed.
    xmldoc CLOB :=
    '<ROWSET>
    <ROW num="1">
    <KEY_OLD> Smoker </KEY_OLD>
    <KEY_NEW> 3 </KEY_NEW>
    <TRANSFORM> Specified </TRANSFORM>
    <KEY_OLD> Smoker </KEY_OLD>
    <VALUEOLD> -1 </VALUEOLD>
    EW> -1 </VALUENEW>
         <DESCRIPTION> NA </DESCRIPTION>
    </ROW>
    ROWSET>';This is your XML document. You almost certainly want to be reading this from the file system and/or have it passed in from another procedure. If you hard-code the XML document, you're limited to a 32k string literal, which is almost certainly causing the error you were reporting initially.
    As am writing this I'm realizing that I'm doing this
    wrong, because I do need to read the XML file from
    the filesystem (but insert the columns
    selectively)...What I need to come up with is a proc
    that would grab the XML file and do inserts into a
    relational table. The XML file will change in the
    future and that means that all my 'canonical format'
    code will be broken. How do I deal with anticipated
    change? Do I need to define/create an XML schema in
    10g if am just inserting into one relat. table from
    one XML file?What does "The XML file will change in the future" mean? Are you saying that the structure of the XML document will change? Or that the data in the XML document would change? Your code should only need to change if the structure of the document changes, which should be exceptionally uncommon and would only be an issue if you're adding another column that you want to work with, which would necessitate code changes.
    I found an article where the issue of changing XML
    file is dealt by using a XSL file (that's where I'd
    define the 'canonical format'), but am having a
    problem with creating one, because the source XML is
    screwed up in terms of the format:
    it's not <x> blah </x>
    <x2> blah </x2>
    x2="blah" x3="blah> ...etc
    Can you point me in the right direction, please?You can certainly use something like the DBMS_XSLProcessor package to transform whatever XML document you have into an XML document in an appropriate format for the XMLStore package and pass that transformed XML document into something like your sample procedure rather than defining the xmldoc local variable with a hard-coded document. Of course, you'd need to write appropriate XSL code to do the actual transform.
    Justin

  • Is there a way to import large XML files into HANA efficiently are their any data services provided to do this?

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    This for a project use case i also have an requirement to process bulk XML files, suggest me to accomplish this task

    Hi Patrick,
         I am addressing the similar issue. "Getting data from huge XMLs into Hana."
    Using Odata services can we handle huge data (i.e create schema/load into Hana) On-the-fly ?
    In my scenario,
    I get a folder of different complex XML files which are to be loaded into Hana database.
    Then I gotta transform & cleanse the data.
    Can I use oData services to transform and cleanse the data ?
    If so, how can I create oData services dynamically ?
    Any help is highly appreciated.
    Thank you.
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  • Upload an XML file into the Internal table

    Hi Guys,
    I want to know, how to upload an xml file into the Internal table through ABAP programming

    you just wanted to load the xml file into internal table (as a table of binary strings)or load the xml data mapped to itab row columns
    for the first one you can simply use gui_upload
    and for the second one you need to load the xml file using gui_upload and use XLST program to transform into an itab
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