QueryObjectFactory (QOF) is a lightweight runtime JDBC byte-code generator providing support for CRUD (create, retrieve, update and delete) operations and stored procedure calls. It uses Java annotations to define mappings and is fully OSGi ready.
Wormhole is a AUTOMATIC & REAL-TIME O/R Mapping framework of J2EE. No POJO needed any more. No need to maintenance mapping XML. When DB structure changed, Wormhole can refresh O/R mapping at runtime without restarting application.