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  1. #1
    Monique7 is offline Member
    Join Date
    May 2014
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    Default Solve LazyInitializationException in spring, hibernate ?

    I have a Spring app , many to many relationship between Order and Product with intermediary ProductOrder.

    If I save the ProductOrder directly to the db, it works fine, but I don't think that's the correct way, so I use the code below to add the connection to a Product by fetching and adding to a lazy collection.

    I had a LazyInitializationException , so I tried to solve it with Hibernate initialize, but now I'm getting org.hibernate.HibernateException: collection is not associated with any session. I debugged and session=null for the PersistentCollection is null . I thought the @Transactional annotation is meant to create begin a transaction and open a session, but it doesn't seem to work.
    I looked for some answers , and the cause is that the current session is not the same as when the object was created. I don't know how to try solving the problem, please help me!

    (I also have OpenEntityManagerInViewFilter in web.xml , but it doesn't seem to make any difference in solving this)

    Java Code:
    	public void addClient(...)
    		Order order = new Order();
    		order.setDate(new Date());
    		order =;
    		for(Item item : items)
    			ProductOrder po = new ProductOrder();

  2. #2
    Monique7 is offline Member
    Join Date
    May 2014
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    Default Re: Solve LazyInitializationException in spring, hibernate ?

    When I save the ProductOrder to order it works fine , but like this it throws the LazyInitializationExxception , please explain why , after all I thought it should have the same result?

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