Hibernate: ManytoOne - how many object? -

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i have database many object (for example "ad"), every ad belongs 1 "category". relationship manytoone. fetch ads , eager option in every ad reference category object. question is: if several ads same category, each category created unique object or references point 1 same object?

if ad1 , ad2 both belong same category c1 , loaded in same hibernate session, both have reference same category object c1.


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