org.springframework.orm.jpa.persistenceunit
Interfaces 
PersistenceUnitManager
PersistenceUnitPostProcessor
SmartPersistenceUnitInfo
Classes 
ClassFileTransformerAdapter
DefaultPersistenceUnitManager
DefaultPersistenceUnitManager.Jpa2PersistenceUnitInfoDecorator
MutablePersistenceUnitInfo
PersistenceUnitReader
SpringPersistenceUnitInfo