Slides from the talk on the open source project Hades - http://hades.synyx.org

1. HadesOliver Gierke - Synyx GmbH & Co. KG
„Simple things should be simple, complex things should be possible.“
Alan Kay

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Speaker
■ Oliver Gierke - gierke@synyx.de
■ Software Architect @ Synyx GmbH & Co. KG
■ JavaEE, Spring (beyond the obvious)
■ Financial industry, automotive
■ Hades project lead
■ olivergierke

3. Java Persistence API

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GenericDao
GenericJpaDao
CRUD

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Demo I

7. Query methods

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1. Create interface
2. Declare methods
3. Tune queries

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GenericDao UserDao
GenericJpaDao
CRUD Query methods
GenericDaoFactory /
GenericDaoFactoryBean

10. Derive
User findByUsername(
String username);

11. Named Query
@NamedQuery
(name=“User.findByLastname“
query=“...“)
List<User> findByLastname(...);

12. @Query
@Query(„from User u where ...“)
List<User> findByLastname(...);

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Demo II

14. Pagination
Sorting

15. @Query(„from User u where
u.lastname = ?“)
Page<User> findByLastname(
String lastname,
Pageable pageable);

16. @Param(„name“)

17. @Query(„from User u where
u.lastname = :lastname
or u.firstname = :firstname“)
List<User> findByLastOrFirstname(
@Param(„lastname“) String lname,
@Param(„firstname“) String fname)

18. @Modifying

19. @Modifying
@Query(„...“)
int undefaultAllBut(Role role);

20. Spring
integration

21. <hades:dao-config
base-package=“foo.**.dao“ />

22. Spring IDE Plugin

23. Custom
DAO code

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GenericDao UserDao UserDaoCustom
GenericJpaDao UserDaoImpl
CRUD Query methods
Custom
implementation
GenericDaoFactory /
GenericDaoFactoryBean

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Demo III

26. Additional
support

27. Auditing

28. Created? Modified?
Who? When?

29. Domain base
classes

30. Questions?
WTF

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Meta stuff
■ Current version: 1.0 (stable 1.1-snapshot)
■ Apache license 2.0
■ http://hades.synyx.org