Hi all,

I just ran into a very strange problem concerning caching. It appears with both EHCache as well as OSCache so I guess it's Hibernate-related. However I'm not versed in the inner workings of the caching mechanism as it always has been something that just worked, so I hope that someone can illuminate me on what's going on.

Given the following query:

If I enable caching, the first run yields the correct result but any subsequent calls will return a list containing a null element.
Now when I rewrite the query to select the whole title object and then use title.getVersions() in my method, everything works as expected. I haven't specified a fetch strategy on the @OneToMany relation so it should be eagerly fetched.

All the best
Marcus

Hello. I have the same problem. Have you found a solution?

Sadly, no. I have more or less worked around the problem by selecting the parent object and retrieving its associated collection by hand.
I once read somewhere that caching can be problematic in the case of lazily-loaded collections but that is clearly not the case here.