Subject says it all... What am I doing wrong here? Apparently the WrappedCallableStatement implementation that JBoss uses is doing something to prevent the casting, but what do I do to get around that?

Code:

      connection = getConnection("OracleDS");

      logger.finer("Calling request_list.get_default_request_list");

      cst = connection.prepareCall("{call request_list.get_default_request_list (?,?,?)}");
      cst.setInt(1, 1);
      cst.setInt(2, 1);
      cst.registerOutParameter(3, OracleTypes.CURSOR);
      cst.execute();

      rs = ((OracleCallableStatement)cst).getCursor(3);

And getConnection is implemented as:
Code:

  private java.sql.Connection getConnection (String resourceName)
      throws NamingException, SQLException {

    logger.finer("Obtaining JNDI context.");
    //Obtain the JDNI context
    Context context = new InitialContext();

    logger.finer("JNDI Lookup to get the resource manager connection factory reference");
    //JNDI Lookup to get the resource manager connection factory reference
    javax.sql.DataSource ds = (javax.sql.DataSource) context.lookup("java:/jdbc/" + resourceName);

    logger.finer("Invoke factory to obtain a connection and return connection to calling environment");
    //Invoke factory to obtain a connection and return connection to calling
    //environment
    return ds.getConnection();
  }

I figured out how to do it.. For posterity I'll post it here...

      cst = connection.prepareCall("{call
request_list.get_default_request_list (?,?,?)}");
      cst.setInt(1, 1);
      cst.setInt(2, 1);
      cst.registerOutParameter(3, OracleTypes.CURSOR);
      cst.execute();
      
      rs = (ResultSet) cst.getObject(3);

Note that using getCursor doesn't work BUT getObject does provided I
tell the output parameter it's a oracle cursor.

Go figure - the one thing I didn't try was the way to fix it..

The reason for this is that JBoss called statements are implemented
via a WrappedCallableStatement (a JBoss object) and that can't be cast
to the OracleCallableStatement (which makes sense after I thought
about it a bit). However, you can register the output parameter as an
oracle type and then cast *that* to the result set.

Oh well.. learn something new every day I guess... :P

Thanks a million! This is still valid as of JBOSS 4.2.2