Hi all,
I have some persistent class and some collection in this class. For saving some element to database, I must execute
someClass.getSomeCollection().add(someElement).
But someClass.getSomeCollection() gets all elements of collection from database. Can I add element to database without getting all elements from collection?

Yes - give the collection the attribute:


That will prevent Hibernate from initializing all of the elements in the collection at once. It's not always a good idea, though - for instance, with that on, every time you call the next() method of that collection's iterator, it will require a separate query to the database. As the Hibernate manual indicates, it's primarily "suitable for very large collections". If the collection is not especially large, the amount of time required to initialize it will probably not be significant.

http://www.hibernate.org/hib_docs/v3/re ... ns-mapping