Hibernate remember the original state of the object bound to persistence context. I'd like to obtain that state to build a set of changed properties. For example any JIRA issue contains a history of changes.

It's not simple as might seem for the first glance because entityManager.find() method returns the already changed object. But I need the original state of the object.

I'm wondering can I obtain it using JPA delegate (Hibernate API)?

You can register an Interceptor implementation with Hibernate and you will get callbacks with lots of information at various stages of an entities life cycle. Here is the API docs: http://www.hibernate.org/hib_docs/v3/ap ... eptor.html and here is a simple example: http://www.hibernate.org/hib_docs/v3/re ... terceptors