Appendix H. Known Bugs and Limitations
Prev |  |

## Appendix H. Known Bugs and Limitations

The following represents a list of significant known bugs and limitations of Kodo JDO. These features were not ready in time for this release, but are expected to be added to future releases:

- Fields of an unknown type (i.e. `java.lang.Object` ) or a user-defined type that is not persistence-capable must be serializable.

- Queries do not support the `-` operator used for unary negation (it can be used for subtraction and to represent negative numbers).

- Using a cast in a Query made against an extent may not prevent instances of the base class from being returned.

Additionally, the following database and JVM specific limitations exist:

Sun JDK 1.2.2 on Solaris

- There seem to be bytecode-level incompatibilities between Kodo and Sun's 1.2.2 JDKs for Solaris. Sun's 1.3 JDKs for Solaris, however, work without problems.

Please see the Kodo JDO bug tracking database for an up-to-date bug list.

Prev | Up |
Appendix G. Release Notes | Home |