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Findermethod in Entitybean

 
Magnus Stattin
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As I understand a entitybean is not even supposed to leave the pool during a finderMethod (findByPrimaryKey). It should just make sure the entity exists and return the reference to the EJBObject to the client.
But when I try this (in Weblogic) and make logging output in the callback method it shows that it will do a lot more.
This is the result from a single findByPrimaryKey:
contructor()
setEntityContext()
ejbActivate()
ejbLoad()
It seems like it gets out of the pool and even loaded during the finder method. How should I think in this case where it seems to be a huge diffrence between theory and practice?
/Best
Magnus
 
Bob Walker Jr
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The finder method is called on a bean that is in the pool. It does not mean that that particular bean is "found". So when the client get a reference to the "found" bean, the found bean must be in the ready state.
The bean instance on which the finder was called could be potentially different from the one that was found.
 
Magnus Stattin
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Thank you for your answer Bob.
The bean that is performing the findermethod should not leave the pool and I don't think it does. But the beans that is found should also stay in the pool (according to HF EJB page 343) until the business methods are called upon them. When I try this they do not, they get activated and loaded even without business calls.
Is this in anyway container specific, or why do they get loaded when the risk becoming stale before they get the business calls?
/Magnus
 
Sudeep das
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Hi guys,
I still have doubt on it....
in addition to your discussion on entity beans and their finder methods, the things which happens is this.....
you call ejbFindBySomething() on home;
the container calls ejbFindBySomething() and then whether it finds a proper entity for it or not it calls ejbActivate(), ejbLoad(), ejbStore() and ejbPassivate().
So what happens is the bean comes out of the pool and gets back to the pool. Because as u were discussing and as mentioned in Spec and HF EJB, that a bean comes out of the pool if the ejbActivate() is called so does not matters which container calls it whether BEA or IBM if it goes by specification it is making the bean come out of the pool.
So my question still lies there on the table ... why? is it so??
Sudeep
 
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