Hibernate version:
Hibernate 3.1 alpha 1
Annotations 3.1 beta 3

Hello, I have tried using java generics with annotations together, but Hibernate is replacing the collections like

Set<MyClass> mySet;

with its own PersistentSet. When ut as I would like to do something with reflection later using

myClass.getMySet().getClass().getTypeParameters();

basicaly I would like to get the Type Parameter ("MyClass") on runtime. It looks like it is not possible to get this information. Does anyone have any idea. I have been trying to find something like getOriginalDeclaredClass() method in class org.hibernate.collection.AbstractPersistentCollection, but I have not found such method. Or maybe there is a plan to make PersistentSet using generics too so I would get something like PersistentSet<MyClass> but if PersistentSet is never used before compilation it seems quite unnecessary to put generics at this point.

Well I don't think this is something we'll add.
You can workaround that using reflection on the getter instead of the returned object. thus PersistentSet will not be involved.

thank you for answer but unfortunately I have got only the reference to the Set and not to the originating class of this collection, so getter is unaccessible. the only possibility for workaround is to have the TypeParameter somewhere in the configuration which is quite cumbersome.

Do you think if I would code something like getOriginalDeclaredClass() for org.hibernate.collection.AbstractPersistentCollection on my own it has a chance to be added to the hibernate code ? (maybe I am wrong but it seems quite easy, unfortunately this would include overloading this method in all subclasses like PersistentSet or some other modifications to them)

You can implement a UserCollectionType, I imagine.