Hibernate session and multiple transactions

[ctran]

It seems that a new session is created at the beginning of each new transaction and closed at the end. Is it possible to share the same session
if transactions are nested? Something like:

// ISOLATION_REQUIRED
doBusinessA()
{
A obj1 = loadById(3);

serviceA.doPart1(obj1) // ISOLATAION_REQUIRES_NEW

....
}

class A {

// ISOLATAION_REQUIRES_NEW
doPart1(A obj)
{
// setting values....
getHibernateTemplate().save(obj)
}

}

[smccrory]

How are you managing your sessons? If you use the OpenSessionInViewFilter, the session's lifespan will be bound to the request/response cycle, not a single transaction.

[ctran]

The session is managed by HibernateTransactionManager. I'm using source-annonations for transaction demarcation. A transaction is started
by doBusiness().

How are you managing your sessons? If you use the OpenSessionInViewFilter, the session's lifespan will be bound to the request/response cycle, not a single transaction.

[smccrory]

Then no, your sessions will not live outside of the doBusiness() methods and thus will not be recycled from one business call/transaction to the next. If you want this, I recommend moving session management to OpenSessionInViewFilter.

[ctran]

I probably didn't explain my problem very well. I only want to share
the session created by doBusiness1() inside itself. This is what I want:

doBusiness1()
{
- new hibernate session (by spring)
- new transaction (by spring)

- look up a hibernate object A
- doPartA(A)
{
- new transaction
- use above session <= looks like Spring doesnt do this
- make changes to A
- save A
- commit transaction
}

- commit transaction
- close session
}

Is that more clear?

Then no, your sessions will not live outside of the doBusiness() methods and thus will not be recycled from one business call/transaction to the next. If you want this, I recommend moving session management to OpenSessionInViewFilter.