ArrayDescriptor.createDescriptor uses Oracle specific in EJB Server

Question

I use Pramati EJB Server. It is EJB 1.1 compatible. I can use getCustomDatum calls without any error (even though it is Oracle specific). But I can't use setCustomDatum. It throws me ClassCastException error.
My line looks like
((OraclePreparedStatement) pstmt).setCustomDatum(...)
So I tried different method to acheive the same. That is to use Loosely Typed method setArray.
To use setArray I need to get the descriptor from Oracle.
I use the following line to do that.
ArrayDescriptor orderLinesDesc = ArrayDescriptor.createDescriptor("OBL_EMPLOYEE", connection);
Where OBL_EMPLOYEE is a Table of EMPLOYEE Object OB_EMPLOYEE.
Where OB_EMPLOYEE has several primitive fields and a TABLE (OBL_ROLES) of Roles object OB_ROLES.
Where OB_ROLES has primitive types and table (OBL_RESPONSIBILITY) of Responisibilities OB_RESPONSIBILITY
Where OB_Responsibility has primitive types
I get the same ClassCastException.
Both parameters (String, Connection) to createDescriptor are non Oracle-Specific.
But the EJB Server vendor says the method tries to typecast to OracleConnection which they don't support.
Any idea?

Answer 1

user521490,
Pardon me if I am asking an obvious question, but did you create the ACCOUNT_TYPE using a "create type" DDL statement? For example:
create or replace type ACCOUNT_TYPE as ...An "ArrayDescriptor" only works for global types (as far as I know).
I'm guessing that JACKCACHE is a [PL/SQL] package, and that's probably why it doesn't work.
Good Luck,
Avi.