EmbedResultSet.getString() returns wrong value after auto-commit with CLOSE_CURSORS_AT_COMMIT

• Key: DERBY-3404
• Type: Bug
• Status: Closed
• Resolution: Fixed
• Priority: Minor
• Assignee: Knut Anders Hatlen
• Reporter: Knut Anders Hatlen
• Component/s: JDBC
• Affects Version/s: 10.3.1.4, 10.3.2.1, 10.4.1.3
• Fix Version/s: 10.3.3.0, 10.4.1.3

Description

The following code prints "null" to the console with the embedded driver:

        Statement s = c.createStatement(ResultSet.TYPE_FORWARD_ONLY,
                                        ResultSet.CONCUR_READ_ONLY,
                                        ResultSet.CLOSE_CURSORS_AT_COMMIT);
        ResultSet rs = s.executeQuery("select * from sysibm.sysdummy1");
        rs.next();
        c.createStatement().executeQuery("values 1").close(); // causes auto-commit
        System.out.println(rs.getString(1));

The call to rs.getString() should perhaps have thrown SQLException, since the auto-commit between next() and getString() should close the ResultSet when the holdability is CLOSE_CURSORS_AT_COMMIT, I think. Anyway, the value stored in SYSIBM.SYSDUMMY1 is 'Y' and not NULL, so it should definitely not return null.