Win a copy of Java Mock Exams (software) this week in the Programmer Certification (OCPJP) forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic

Hibernate EntityManager working with Collections

Brian Smith
Ranch Hand
Posts: 63
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I have an entity (InvalidAddress) with a many to one relationship with another entity (ServiceRequest). I am trying to add an InvalidAddress entity to the InvalidAddressCollection owned by ServiceRequest

I am getting a NPE because serviceRequest.getInvalidAddressCollection() is returning null when there are no related InvalidAddress entities. I know this makes sense but it seems like a waste to have to do this before I add any related entity to any collection

Is this very repetitive boiler-plate required when working with collections?

It would seem like the EntityManager should initialize the Collection and just return an empty list instead of a null list. Or is that up to me when I implement the getter on ServiceRequest?

Thanks for any advice.
[ July 23, 2007: Message edited by: Brian Smith ]
Happiness is not a goal ... it's a by-product of a life well lived - Eleanor Roosevelt. Tiny ad:
the new thread boost feature: great for the advertiser and smooth for the coderanch user
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!