Question

Is there a good way to determine why Hibernate/JPA performs a query. I have two entities linked by

@OneToOne(cascade = {CascadeType.REMOVE, CascadeType.PERSIST},
          fetch   = FetchType.LAZY)

When fetching one entity, the other one is also queried. I am trying to find out how to avoid that (actual lazy loading).

Thanks,

-dennis

Answer 1

First of all, FetchType.LAZY is a hint for persistence provider, provider is not required to follow it.

Perhaps in this case provider have to check whether relationship is null (otherwise provider can create a proxy object for lazy access to the entity).

You can try the following:

• If this relationship is never null, mark it as optional = false
• If you use field access (i.e. annotation is placed on the field), try to use property access