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 EJB  |  Question 28 of 175    Print  
How do you check whether the session is active in Stateful session bean

  
Total Answers and Comments: 1 Last Update: July 28, 2005   
  
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July 28, 2005 12:50:23   #1  
J. P. Naidu        

RE: How do you check whether the session is active in Stateful session bean
In Stateful session bean session is not itself a separate entity. it is contained in the bean it self. So in order to check tht we need the check whether the Stateful session bean is present or not which is done by just invoking the home interface with the jndi
 
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Answer posted by Mohan on 2005-05-20 08:44:39: SessionBeans typically are used to represent a client they are of two typse  Stateful Session Beans : they maintain conversational state between 
Latest Answer : Session bean is encapsulates the business logic. and carry out the task for behalf of the client. It have two types.one is stateful session bean. this is maintain the convesional state.another one is stateless session bean. donot maintain the conversional.state. ...

Answer posted by Mohan on 2005-05-20 08:45:36: Stateful session beans have the passivated and Active state which the Stateless bean does not have. 
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Latest Answer : 1. doesnot exsist 2. exsists 3. passivate  invoke ejbcreate() set the sessioncontext() call create()  if the session idle call ejbPassivate() to get back to session call ejbActivate()  to end the ...

Latest Answer : 1. dose not exsist 2. exsist  to start the session set the sessionContext() call create()  to end session call remove ...

Answered by Jey on 2005-05-08 19:41:22: Session bean callback methods differ whether it is Stateless or stateful Session bean. Here they are.  Stateless Session Bean 1. setSessionContext() 2. 
Latest Answer : Please note down that ejbCreate() is not a method of Session Bean, for reference see the link http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/ejb/SessionBean . html ...

Latest Answer : I'll  take a best exmaple to explain.Statefull sessionbean : ATM operationStateless Session Bean : Credit card Once we log into the ATM by entering PIN number. We can do multiple transacations like Balance enquiry, Withdrawl, ministatement..etc... ...

Answered by Jey on 2005-05-08 12:47:06: Entity bean represents the real data which is stored in the persistent storage like Database or file system. For example, There is a table in Database called Credit_card. 
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Answered by Jey on 2005-05-08 11:32:16: CMP means Container Managed Persistence. When we write CMP bean , we dont need to write any JDBC code to connect to Database. The container will take care of connection 
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Latest Answer : The following steps describe the life cycle of an entity bean instance  An entity bean instances life starts when the container creates the instance using newInstance and then initialises it using setEntityContext.  The instance enters ...

Answered by Jey Ramasamy on 2005-05-08 19:51:04: 1. setEntityContext() 2. ejbCreate() 3. ejbPostCreate() 4. ejbActivate() 5. ejbPassivate() 6. ejbRemove() 7. unsetEntityContext() 
Latest Answer :  setEntityContext(EntityContext) unsetEntityContext() ejbLoad() ejbStore() ejbActivate() ejbPassivate() ejbRemove() ...


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