Issue with XML parsing

Question

Hey guys,
Issue goes like this : I've got an XML which has a name space reference as shown below :
<root>
     <node1>
        <*ns*:node2>test_data</ns:node2>
    </node1>
</root>
-- I'm using the functions in the XSL processor package to access the data under node2 :
  l_db_n :=
         DBMS_XSLPROCESSOR.selectSingleNode(l_n,
                                        'node1'                                       
         DBMS_XSLPROCESSOR.valueof (l_db_n,
                                    'node2/text()' ,
                                   l_node_value , 'xmlns:ns2="http://some-url.com"');the code fails if I include the namespace reference as shown above, can someone tell me where I'm going wrong ?
Or if this is not the way to specify a namespace reference, pls let me know how to do it, help much appreciated.
Thanks
Edited by: user11382544 on Dec 17, 2009 11:47 PM

Answer 1

Here's an example of extracting data from XML that has namespaces in it...
SQL> ed
Wrote file afiedt.buf
  1  WITH t as (select XMLTYPE('
  2  <RECSET xmlns:aa="http://www.w3.org">
  3    <aa:REC>
  4      <aa:COUNTRY>1</aa:COUNTRY>
  5      <aa:POINT>1800</aa:POINT>
  6      <aa:USER_INFO>
  7        <aa:USER_ID>1</aa:USER_ID>
  8        <aa:TARGET>28</aa:TARGET>
  9        <aa:STATE>6</aa:STATE>
10        <aa:TASK>12</aa:TASK>
11      </aa:USER_INFO>
12      <aa:USER_INFO>
13        <aa:USER_ID>5</aa:USER_ID>
14        <aa:TARGET>19</aa:TARGET>
15        <aa:STATE>1</aa:STATE>
16        <aa:TASK>90</aa:TASK>
17      </aa:USER_INFO>
18    </aa:REC>
19    <aa:REC>
20      <aa:COUNTRY>2</aa:COUNTRY>
21      <aa:POINT>2400</aa:POINT>
22      <aa:USER_INFO>
23        <aa:USER_ID>3</aa:USER_ID>
24        <aa:TARGET>14</aa:TARGET>
25        <aa:STATE>7</aa:STATE>
26        <aa:TASK>5</aa:TASK>
27      </aa:USER_INFO>
28    </aa:REC>
29  </RECSET>') as xml from dual)
30  -- END OF TEST DATA
31  select x.country, x.point, y.user_id, y.target, y.state, y.task
32  from t
33      ,XMLTABLE(XMLNAMESPACES('http://www.w3.org' as "aa"),
34                '/RECSET/aa:REC'
35                PASSING t.xml
36                COLUMNS country NUMBER PATH '/aa:REC/aa:COUNTRY'
37                       ,point   NUMBER PATH '/aa:REC/aa:POINT'
38                       ,user_info XMLTYPE PATH '/aa:REC/*'
39               ) x
40      ,XMLTABLE(XMLNAMESPACES('http://www.w3.org' as "aa"),
41                '/aa:USER_INFO'
42                PASSING x.user_info
43                COLUMNS user_id NUMBER PATH '/aa:USER_INFO/aa:USER_ID'
44                       ,target  NUMBER PATH '/aa:USER_INFO/aa:TARGET'
45                       ,state   NUMBER PATH '/aa:USER_INFO/aa:STATE'
46                       ,task    NUMBER PATH '/aa:USER_INFO/aa:TASK'
47*              ) y
SQL> /
   COUNTRY      POINT    USER_ID     TARGET      STATE       TASK
         1       1800          1         28          6         12
         1       1800          5         19          1         90
         2       2400          3         14          7          5
SQL>