What does NHibernate Session.Evict do?

nhibernate evict
DaSmart picture DaSmart · May 20, 2011 · Viewed 16.9k times · Source

What does the following code snippet do? Why the use of Evict?

private void DoEvict(customer cust)
{
    AddressRepository.Evict(cust.Address);
    cust.Address = AddressRepository.Get(cust.Address.Id);
}

Answer

psousa picture psousa · May 20, 2011

The evict removes that specific "Address" reference from the NHibernate first level cache.

If the first instruction in your code snippet was not executed, the second one, instead of fetching the item from the DB, would simply return it from the first level cache.

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