Calling a stored procedure which returns a UDT

Question

Hi devs,
Recently I've come across this requirement where I need to get a Oracle UDT returned from a stored procedure. The stored procedure I've used is described below.
CREATE OR REPLACE PROCEDURE test_proc(param_id IN NUMBER, cust OUT CUSTOMER)
IS
BEGIN
SELECT customer INTO cust from CUS_T where id=param_id;
END;
the type CUSTOMER has the following structure.
CREATE OR REPLACE TYPE CUSTOMER AS OBJECT(
id NUMBER,
name VARCHAR2(20)
the table "CUS_T" is of the following structure.
CREATE TABLE CUS_T(id NUMBER, customer CUSTOMER);
The use case I'm trying to address is that I need to retrieve the CUSTOMER object corresponding to a particular ID through a java code snippet. Here's how I'm currently trying to get it done.
*CallableStatement cs=connection.prapareCall("{test_proc(?,?)}");*
*cs.setInt(1,some_int);*
*cs.registerOutParameter(2,Types.STRUCT);*
*cs.execute();*
*Struct result=(Struct)cs.getObject(1);*
Although Oracle returns UDTs as SQL Structs, I'm running into the following exception while executing the aforementioned code snippet.
*java.sql.SQLException: ORA-03115: unsupported network datatype or representation*
Any help on this matter would be greatly appreciated.
Cheers,
Prabath

Answer 1

Hi,
I've been able to find the solution for this problem. The following simple code snippet
has the done trick.
CallableStatement ocs = connection.prepareCall("{ call testProc(?)}");
ocs.registerOutParameter(1, Types.STRUCT,"CUSTOMER");
ocs.execute();
What I did there was, simply adding the UDT_NAME (the name CUSTOMER in the
previous example) while registering the OUT parameter.
Cheers,
Prabath
Edited by: 829281 on Feb 2, 2011 5:56 PM