conn = ConnectionManager.getConnection();
conn = SessionManager.getSession().getConnection();
                public void setUp() throws SQLException {                    conn = ConnectionManager.getConnection();                    java.sql.PreparedStatement tableStmt = null;                    if (DbHelper.getDatabase() == DbHelper.DB_POSTGRES) {                        tableStmt = conn.prepareStatement                            ("create table db_test (\n" +                             "    theId          integer primary key,\n" +                             "    aBlob          bytea\n" +                             ")");                    } else {                        tableStmt = conn.prepareStatement                            ("create table db_test (\n" +                             "    theId          integer primary key,\n" +                             "    aBlob          blob\n" +                             ")");                    }                    tableStmt.executeUpdate();                    tableStmt.close();                }