Reference
Existing EJB converters
Predefined EJB data converters exist for you to use in mapping your enterprise beans. You can also extend these as superclasses for new converters that you create.
Limitations of EJB 1.x - 2.x development tools
This topic outlines current known limitations and restrictions for the EJB 2.x tooling.
Limitations of EJB 1.x - 2.x deployment
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