LCDUNG.

// Declaring fetch type for one to many association in your POJO
@OneToMany(mappedBy = "user", fetch = FetchType.LAZY)
private Set<Document> documents = new HashSet<Document>();
// To fetch user with document use initialize() method as follows
User user = (User)session.get(User.class, new Integer(100));
//This code will fetch all products for user 100 from database 'NOW'
documents = user.getDocuments();