• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
  • Campbell Ritchie
  • Liutauras Vilda
  • Jeanne Boyarsky
  • Devaka Cooray
  • Paul Clapham
  • Tim Cooke
  • Knute Snortum
  • Bear Bibeault
Saloon Keepers:
  • Ron McLeod
  • Tim Moores
  • Stephan van Hulst
  • Piet Souris
  • Ganesh Patekar
  • Frits Walraven
  • Carey Brown
  • Tim Holloway

Persisting pojo with collection attribute using Hibernate

Posts: 25
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi, I'm having difficulties understanding how to persist a bean/pojo/class with a collection holding another pojo. How should I go about solving the following example:

I have these two entities:

and I've created a database with these tables:

Now let's say that I already have an author with a populated bibliography and I want to persist this to the database.

What I already tried was using hibernates merge by calling this method:

Like this

Unfortunately this doesn't seem to work as the foreign key author_id in books is never set (NULL).

What should I be doing different?
It is sorta covered in the JavaRanch Style Guide.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!