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  1. Derby
  2. DERBY-4491

The network client changes UDTs into Strings and returns their type as LONGVARBINARY.

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 10.0.2.0, 10.0.2.1, 10.1.1.0, 10.1.2.1, 10.1.3.1, 10.2.1.6, 10.2.2.0, 10.3.1.4, 10.3.2.1, 10.3.3.0, 10.4.1.3, 10.4.2.0, 10.5.1.1, 10.5.2.0, 10.5.3.0
    • 10.6.1.0
    • JDBC
    • Patch Available
    • Embedded/Client difference

    Description

      This is a pre-existing bug which seems to have been with Derby since the beginning. Some of the columns in the system tables (e.g., SYS.SYSALIASES.ALIASINFO) contain objects. If you select these columns:

      1) In the embedded client you will get the correct results. You will get the objects in these columns. In addition, the ResultSetMetaData for these columns will correctly report that the columns have type JAVA_OBJECT and will give a reasonable type name (the class name for the object in the column).

      2) However, in the network client, you will get the wrong results. ResultSet.getObject() will return Strings rather than the original objects. In addition, the ResultSetMetaData for these columns will incorrectly report that their type is LONGVARBINARY.

      Attachments

        1. derby-4491-01-ab-networkTransport.diff
          74 kB
          Richard N. Hillegas
        2. derby-4491-01-ad-networkTransport.diff
          96 kB
          Richard N. Hillegas
        3. derby-4491-02-aa-supportsUDTs.diff
          0.5 kB
          Kristian Waagan

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. DERBY-4688 With Derby 10.6 and higher, selecting object columns from system tables ERROR XN020: Error marshalling or unmarshalling a user defined type

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. DERBY-4499 Compiler error when preparing a procedure call with an output parameter of user defined type.

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. DERBY-4516 The SanityManager is included in the common arm of the codeline but a use of it in client code gave rise to a sealing violation in AssertFailureTest when run against insane jars.

          • Major - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. DERBY-6888 Large User-Defined Types break Network Client

          • Major - Major loss of function.
          • Open

          Improvement - An improvement or enhancement to an existing feature or task. DERBY-651 Re-enable the storing of java objects in the database

          • Major - Major loss of function.
          • Closed

          Activity

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              rhillegas Richard N. Hillegas
              rhillegas Richard N. Hillegas
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              Dates

                Created:
                Updated:
                Resolved: