How to fetch the relational data from the xml file registered in xdb

Question

Hi,
I have to register the xml file into the  xdb repository and i have to fetch the data of the xml file as relational structure  through the select statement .
i used the below query to register the xml file in xdb.
DECLARE
v_return BOOLEAN;
BEGIN
v_return := DBMS_XDB.CREATERESOURCE(
abspath => '/public/demo/xml/db_objects.xml',
data => BFILENAME('XML_DIR', 'db_objects.xml')
COMMIT;
END;
Now i have to fetch the values in the xml file as relational data .
whether it is possible ?
can any one help me.
Regards,
suresh.

Answer 1

When you transform your XMLdata to a xmltype you can do something like this for example:
select
extractvalue(value(p),'/XMLRecord/Session_Id') session_id,
extractvalue(value(p),'/XMLRecord/StatementId') StatementId,
extractvalue(value(p),'/XMLRecord/EntryId') EntryId
from
table(xmlsequence(extract(xmltype('
<XMLdemo>
<FormatModifiers><FormatModifier>UTFEncoding</FormatModifier></FormatModifiers>
<XMLRecord>
<Session_Id>117715</Session_Id>
<StatementId>6</StatementId>
<EntryId>1</EntryId>
</XMLRecord>
</XMLdemo>
'),'/XMLdemo/*'))) p
where extractvalue(value(p),'/XMLRecord/Session_Id') is not null;
For this sample I've put a readable XML in plain text and convert it to xmltype so you can run it on your own database.