DAO and Service layers (JPA/Hibernate + Spring)
68796
Java EE Architecture - Are DAO's still recommended when using an ORM like JPA 2?
51998
Access JPA  programmatically
110213
How to convert a Hibernate proxy to a real entity object
60590
What's the difference between @Component, @Repository & @Service annotations in Spring?
157389
JPA's cascade = REMOVE and Hibernate's @OnDelete used together?
67101
How to flush data into db inside active spring transaction?
90903
Hibernate HQL with interfaces
24517
MVC Spring Implementation - error: java.lang.NullPointerException
31217
Relationship between EJB 3.0 and JPA?
3753
Backing beans (@ManagedBean) or CDI Beans (@Named)?
143748
Why not use an IoC container to resolve dependencies for entities/business objects?
86736
"detached entity passed to persist error" with JPA/EJB code
23454
What are the differences between the different saving methods in Hibernate?
150915
Spring Hibernate Vs jdbc template vs spring orm
120143
Changing Persistence Unit dynamically - JPA
88435
Hibernate: Automatically creating/updating the db tables based on entity classes
7661
Why is Spring's ApplicationContext.getBean considered bad?