Change the default output of dbms_xmlgen.getxml

10g 10.2.0.3

installation program:

create table table_x (column1 varchar2(10), column2 number) 

insert into table_x values('row1',1);

insert into table_x values('row2',2);

commit;

Select using getxml:

select dbms_xmlgen.getxml('select column1, column2 from table_x') from dual;

gives:

<?xml version="1.0"?>
<ROWSET>
 <ROW>
  <COLUMN1>row1</COLUMN1>
  <COLUMN2>1</COLUMN2>
 </ROW>
 <ROW>
  <COLUMN1>row2</COLUMN1>
  <COLUMN2>2</COLUMN2>
 </ROW>
</ROWSET>

How to get:

<?xml version="1.0"?>
<ROWSET>
 <ROW>
  <COL_DTLS>
    <COL_VALUE>row1</COL_VALUE>
  </COL_DTLS>
  <COL_DTLS>
    <COL_VALUE>1</COL_VALUE>
  </COL_DTLS>
 </ROW>
 <ROW>
  <COL_DTLS>
    <COL_VALUE>row2</COL_VALUE>
  </COL_DTLS>
  <COL_DTLS>
    <COL_VALUE>2</COL_VALUE>
  </COL_DTLS>
 </ROW>
</ROWSET>

In summary.

1. how to 'inject' the COL_DTLS tag for each piece of old LINE.
2. how to change each element tag name line to 'COL_VALUE '.

Note that the < Column1 > tag could change your name to any other tag, I have to be able to handle any valid SQL that generates SQL column names and number of items will change

DBMS_XMLGEN can control only the names of ROWSET and ROW tags.
So, if your only entry is a string SQL, then you must postprocess the XML generated, and XSLT can be useful here:

SQL> select xmltransform(
  2    dbms_xmlgen.getxmltype('select column1, column2 from table_x')
  3  , xmltype(
  4  '
  5    
  6    
  7      
  8        
  9      
 10    
 11    
 12      
 13    
 14  '
 15    )
 16  ).extract('/*')
 17  from dual
 18  ;

XMLTRANSFORM(DBMS_XMLGEN.GETXM
--------------------------------------------------------------------------------

  
    
      row1
    
    
      1
    
  
  
    
      row2
    
    
      2

Otherwise, the implementation of PL/SQL:

DECLARE

  ctx   dbms_xmlgen.ctxHandle;
  doc   clob;

  xsl   xmltype := xmltype('
  
  
    
      
    
  
  
    
  
');

  qry   varchar2(2000) := 'select column1, column2 from table_x';

BEGIN

  ctx := dbms_xmlgen.newContext(qry);
  dbms_xmlgen.setXSLT(ctx, xsl);
  doc := dbms_xmlgen.getXML(ctx);
  dbms_xmlgen.closeContext(ctx);

  dbms_output.put_line(doc);

END;
/

Tags: Database

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