Hi,

I tried to find an answer in the forums, but had no luck.

I'm trying to use a negative integer for my primary keys (for data enter manually)

It works well eveywhere except when I have many-to-many associations. The code works fine since I hav ebeen using postive keys for a while and everything is fine

I'm using the annotations with EJB3/JPA.

When I run with a negative primary key, I get an index out of bounds because it looks like it's using the key to go into the list to build the objects.

Why does it use the ID/primary as the key for storing stuff in the list?

Here are my mappings:

Hi

Hibernate use index-column property for List elements. So your index-column "mapping_id" should non negative integer. or you can use Set insteadof List


Amila
(Don't forget to rate if helps)

I tried using a Set, but it still tried to do the same thing, so redargless of being a List or Set it still gave me an error. I will try again anyway to make sure.

Hi

did you remove the @IndexColumn(name="mapping_id")


Amila
(Don't forget to rate if helps)

Actually the Set was working. It was another ManyToMany down the line that was then giving an error and I thought it was the same one.

I can't go with a Set because I'm using Seam and it needs a List. I could convert Sets to List, but then I need to do major surgery with the code just to use the different IDs.

I decided to avoid negative IDs and use a larger ID for manually loaded data.

Thanks for the help