Default insertion for missing elements using DBMS_XMLSave.insertXML

Question

Hi,
I am trying to insert default values for some columns, without having those column names as elements in the xml document. Is it possible to do so?? This is the code I am using for now, but it inserts null values for missing elements in the xml document.
insCtx := DBMS_XMLSave.newContext ('TABLENAME'); -- get the context
rows := DBMS_XMLSave.insertXML (insCtx, p_xmlDoc); -- insert the doc
DBMS_XMLSave.closeContext (insCtx); -- close the handle

Answer 1

Only thing I noticed with dbms_xmlstore.insertXML, was when my xml document had "<?xml version = "1.0" ?>" at the start, it gave an error "LPX-00209: PI names starting with XML are reserved"That's probably due to the XML document not starting exactly with "&lt;", like this :
SQL> DECLARE
  2
  3    xmldoc   clob := '
  4  <?xml version="1.0"?>
  5        <ROWSET>
  6       <ROW>
  7        <COL1>1</COL1>
  8        <COL2>TEST1</COL2>
  9       </ROW>
10       <ROW>
11       <COL1>2</COL1>
12      </ROW>
13     </ROWSET>';
14
15    ctx      dbms_xmlstore.ctxHandle;
16    numrows  number;
17
18  BEGIN
19
20    ctx := dbms_xmlstore.newContext('MY_TABLE');
21    numrows := dbms_xmlstore.insertXML(ctx, xmldoc);
22    dbms_xmlstore.closeContext(ctx);
23
24  END;
25  /
DECLARE
ERROR at line 1:
ORA-31011: XML parsing failed
ORA-19202: Error occurred in XML processing
LPX-00209: PI names starting with XML are reserved
ORA-06512: at "SYS.DBMS_XMLSTORE", line 78
ORA-06512: at line 21 However, it runs OK if the prolog actually starts the character stream :
SQL> DECLARE
  2
  3    xmldoc   clob := '<?xml version="1.0"?>
  4        <ROWSET>
  5       <ROW>
  6        <COL1>1</COL1>
  7        <COL2>TEST1</COL2>
  8       </ROW>
  9       <ROW>
10       <COL1>2</COL1>
11      </ROW>
12     </ROWSET>';
13
14    ctx      dbms_xmlstore.ctxHandle;
15    numrows  number;
16
17  BEGIN
18
19    ctx := dbms_xmlstore.newContext('MY_TABLE');
20    numrows := dbms_xmlstore.insertXML(ctx, xmldoc);
21    dbms_xmlstore.closeContext(ctx);
22
23  END;
24  /
PL/SQL procedure successfully completed.
With the dbms_xmlsave.inserXML, [...] it wont insert the default column values.Now that's strange...
I understand there could be differences in the parsing implementation, but in the end both processes must issue an INSERT into the target table using plain SQL, so I really wonder why default values are not applied.
I'll try to reproduce when I have access to a Java-enabled db.