Hibernate version:3.1

In my web application I have a Manufacturer which can have many Products (a simple one-to-many relationship) and the following sequence of requests/responses:

1. Request 1 opens Session 1 and fetches Manufacturers
2. Response 1 displays Manufacturers in list (does NOT fetch related Products)
3. User selects Products disclosure button to see products for that manufacturer
4. Request 2 opens Session 2 and calls manufacturer.getProducts() which throws the LazyInitializationException

I am using Spring and OpenSessionInViewInterceptor which works great on all pages except for this one.

Everything is working fine when I do the fetch of the Manufacturers and the call to getProducts() in the same request with the same session. Also in Request 2 Session 2, I do not explicitly fetch the Manufacturer again.

Here is my question. In order for lazy initialization to work, do I need to fetch the Manufacturer in the session that I want to use the getProducts() method?

RS, are you re-attaching the Manufacturer object to the new session before you attempt to retrieve its members?

See http://www.google.com/search?hl=en&lr=& ... te+session
for several good options.

Please leave feedback if this is helpful :)

That's exactly what happened. The object was not attached to the new session and therefore I could not traverse the relationship to Products.

Here is what I ended up doing:

In my FormController I called:



In my ManufacturerDao I did:



update or lock, both methods work.

Thanks for the help.