Retrieving Native Connection from JBOSS wrapped Connection - spring

Question

I need to pass an array Object to Oracle 11 DB. I am using annotations based Spring 3.1 and using SimpleJdbcCall to call the procedure on JBOSS server. Here is the relevant jdbcCall.
SimpleJdbcCall call = new SimpleJdbcCall(dataSource)
.withoutProcedureColumnMetaDataAccess()
.withProcedureName(IbeginDataBaseConstants.PROCEDURE_CREATE_NEW_ADMIN.VAL)
.declareParameters(new SqlParameter("inUserEmpID", OracleTypes.INTEGER))
.declareParameters(new SqlParameter("inCountryIDs", OracleTypes.ARRAY, "ibo_number_array" ))
.declareParameters(new SqlParameter("inSysRoleID", OracleTypes.INTEGER))
.declareParameters(new SqlParameter("inLoggedIn", OracleTypes.INTEGER))
.declareParameters(new SqlOutParameter("outStatus", OracleTypes.CHAR))
.declareParameters(new SqlOutParameter("outMsg", OracleTypes.VARCHAR));
As you can see inCountryIDsis an array that I need to send.
With help from google, I was able to get multiple ways through which I can send Array to DB. Here is the first one.
SqlTypeValue value = new AbstractSqlTypeValue() {
protected Object createTypeValue(Connection conn, int sqlType, String typeName) throws SQLException {
ArrayDescriptor arrayDescriptor = new ArrayDescriptor(typeName, conn);
ARRAY idArray = new ARRAY(arrayDescriptor, conn, ids);
return idArray;
}
And I added it to parameter source using
sourceMap.addValue("inUserEmpID", newAdmin.getEmpId());
sourceMap.addValue("inCountryIDs", value);
sourceMap.addValue("inSysRoleID", newAdmin.getRoleId());
sourceMap.addValue("inLoggedIn", newAdmin.getLoggedInId());
And the Exception that I got was
org.jboss.jca.adapters.jdbc.jdk6.WrappedConnectionJDK6 cannot be cast to oracle.jdbc.OracleConnection
I understood the reason, SqlTypeValue implemention requires a OracleConnection whereas Spring passes WrappedConnection.
So, I tried to unwrap the connection using WrappedConnection class with this code.
WrappedConnection wrappedConnection = conn.unwrap(WrappedConnection.class);
But here the exception was
Not a wrapper for: org.jboss.jca.adapters.jdbc.WrappedConnection
In another try, I tried to cast existing connection to WrappedConnection using explicit cast with this.
WrappedConnection wrappedConn = (WrappedConnection)conn;
And still no luck.
Exception.
org.jboss.jca.adapters.jdbc.jdk6.WrappedConnectionJDK6 cannot be cast to org.jboss.jca.adapters.jdbc.WrappedConnection
Well, All I had to do is to retrieve the underlying connection, so I tried to cast it into WrappedConnectionJDK6 so that I would be able to call the relevent method there.
WrappedConnectionJDK6 wrappedConnection = (WrappedConnectionJDK6)conn;
leads to
org.jboss.jca.adapters.jdbc.jdk6.WrappedConnectionJDK6 cannot be cast to org.jboss.jca.adapters.jdbc.jdk6.WrappedConnectionJDK6
And the second approach
Map in = Collections.singletonMap("inCountryIDs", new SqlArrayValue(idsArray));
The problem with this approach is that Collections.singletonMap returns an immutable map. So, I can't use it to add more parameters.
Is there any way through which I can retrieve the underlying connection in JBoss Wrapped Connection ? Or is there any other mechanism through which I can pass an array paramter without having to interact with connection ?