Hi,

I'm looking for some basic advice on using the same hibernate entities across multiple webapps. I've taken a "shoot-first-ask-questions-later" attitude towards Hibernate, but I'm running into a problem with lazy fetching. I'm stumped.

Here's my situation. I have a project with multiple webapps and maven projects. One of them is a "company-entities" project that has the configuration for Hibernate (hibernate.cfg.xml) and all the annotated classes. I then have a "company-client" project, intended to manage the logic of composing and building entities across webapps. I have a "company-admin" interface that runs on Spring MVC ( 3.2.4.RELEASE ), where editors can manage their content, and a "company-server" project that uses JAX-RS to achieve more or less the same thing. The difference is that the JAX-RS API imposes strict RESTful interface to be used by external apps. There will be later additions for client facing webapps and mobile apps.

Try as I might, I can't render entities with a ( OneToMany/ManyToMany etc ) in Spring MVC or JAX-RS. ( short of using FetchType.EAGER which creates it's own set of problems ).

I can find some information on how to set up a SessionOpenInViewFilter and SessionOpenInViewInterceptor for Spring MVC, but I don't really understand how that applies to my situation.

I guess my question is, should I use "hibernate.cfg.xml" to configure how Hibernate manages the entities in an underlying project, potentially overwriting it in specific webapps? Or should I only configure Hibernate in the respective webapps that depend on the "company-entities" project?

Hope someone can find the time to help me along with a few suggestions...

Hm, perhaps a bit more concrete question. Do I need to configure multiple session factories, or can I stick to a single configuration? If so, how do I set up an "Open Session In View Pattern" in Spring and Jersey?

PS. here's the config in my hibernate entitites project.