Bhaktavatsalam Gani

• May 22nd, 2007

It is not possible to pass the HttpSession as part of the EJB method parameter. Because it is not serializable. If we want to pass the session information we need to create another class that can hold all the session values in a serializable form.

k_yogi85

• Apr 16th, 2007

You can pass the HttpSession as parameter to an EJB method, however you should have?all objects in session?be serializable.This has to be consider as passed-by-value, that means that its read-onl...

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Inside an EJB you may retrieve the "Caller" name, that is the login id by invoking: sessionContext.getCallerIdentity().getName() where sessionContext is the instance of "SessionContext" (setSessionContext) passed to the Session Bean, or the instance of "EntityContext" (setEntityContext) passed to the Entity Bean.

Sony V George

• Apr 4th, 2007

You can get the User Name? by using the following codesessionContext.getCallerIdentity().getName() There is having two types of context 1.SessionContext2.EntityContext

uma

• Feb 12th, 2006

u can get the information abt the client(who invoked the bean) by the EJBContext methods.There r 2 types1)SessionContext and 2)EntityContext.These r used get the information abt the container,the client and get reference of the bean itself.

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Sony V George

• Apr 4th, 2007

We can improve efficency through Pooling. If you are asking how we can balance the load, we can do it through clustering so that we can balance the load. this one will reduce the server balancing. You can take either one .

CDT

• Sep 17th, 2005

In plain English, I think this question is asking how EJB is more efficient as user load increases. The correct answer is pooling. Pooling is implemented differently across application server implem...

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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()

amics

• Mar 30th, 2007

 setEntityContext(EntityContext) unsetEntityContext() ejbLoad() ejbStore() ejbActivate() ejbPassivate() ejbRemove()

srini

• May 21st, 2006

No ejbcreate() is not a callback method

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Arun Kumar D - SCJP, SCBCD 1.3

• Mar 26th, 2007

SessionSynchronization is an interface in the javax.ejb package. This interface can be implemented by the ejb to show the transactional state of the bean.The different methods that come into this inte...

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tamil Selvan

• Mar 16th, 2007

Stateless session beans can't maintain client specific state , so no need to pass initialization parameters to Stateless Session Bean

Srinivasan

• Dec 29th, 2006

stateless bean does not maintain the connection between client and container.Statefull maintain the connection between client and container.

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harish.verma

 Profile Answers by harish.verma Questions by harish.verma

• Mar 6th, 2007

If objects that are not serializable, it can't be passed as input parameter of remote methods. It should throw runtime error.

keshab

• Dec 13th, 2006

Runtime Error

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jananianandan

 Profile Answers by jananianandan Questions by jananianandan

• Feb 20th, 2007

design patterns codify and provide developers with a way to recognize common useful techniques.with design patterns , it's important to understand the types of situation that each pattern addresse...

Cos

 Profile Answers by Cos Questions by Cos

• Oct 28th, 2005

A design pattern describes a recurring desing problem and a core solution to it. A design pattern has 4 essential elements: a name, the problem, the solution and consequences. Design patterns can be grouped in 3 major categories: creational, structural, and behavioural.

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kamalagopinathan

• Feb 14th, 2007

Hai,Interface* Interface contain only method declaration* Interface implements more that onesAbstract* Abstract contain method declaration and definitions also* Abstract extend only one

Anand

• Apr 6th, 2006

Interface represents highest level of abstraction ie no declaration only definition of methods.

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Lap

• Feb 11th, 2007

ejbCreate() is a method that must exist in all EJBs, it is a method that will be called by the EJB container to create a remote object when it is requested to do so by the client. ejbPostCreate() only...

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santh kumar

 Profile Answers by santh kumar Questions by santh kumar

• Feb 1st, 2007

The "reentrant " element dictates whether our bean can call itself through another bean.For exmple, take two beans are there in EJB container named "beanA" and "beanB".There is an element " True " ...

sennee

• Jan 29th, 2007

The term reentrant is the word you can find in Deployment Descriptors. when a bean is executing a client request in a given tranaction context and another request with the same transaction context arr...

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sanju

• Jan 24th, 2007

In a distributed system it is the idea that the resources accessed by a user can be anywhere on the network without the user having any idea where the resource is located. A file could be on the user'...

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Panindrakumar Balellugari

• Jan 5th, 2007

In reality there is no need to get the server name of the bean on which it runs but if you want to get it then you can use SessionContext object to do it.

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madhu

• Jan 5th, 2007

By addiing  EJB ref  tag to  deployment descripters(web.xml etc..)

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surya kumari

• Jan 2nd, 2007

Can u tell me with an example

Ram ji soni

• Dec 7th, 2006

The user can not identified that the bean is stateful or stateless whenever he would not see the web.xml file, there s only one entry in ds file dat d bean is srateul or stateless.Main Difference:Stat...

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Somashekhara

• Dec 18th, 2006

Container uses "Required" as the default transaction attribute.

Dhanasekar

• Oct 18th, 2006

Supports is considered to be the default transaction attriibute

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keshab

• Dec 13th, 2006

In statefull session bean there is 1to 1 mapping between ejbObject and bean instenace , there is no need of pool

Sankar

• Oct 15th, 2006

Hi, We know that Stateful session beans are maintained a conversational state between the clients...and Stateful session bean's instance is only for a particular client ..the other clients can't u...

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lhariPrasad

 Profile Answers by lhariPrasad Questions by lhariPrasad

• Dec 8th, 2006

One is setting up the entity bean context and the other for session bean context.

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lhariPrasad

 Profile Answers by lhariPrasad Questions by lhariPrasad

• Dec 8th, 2006

see ejb-jar.xml and weblogic-ejb-jar.xml, which defines the deployment descriptor's.

srinivas

• Dec 1st, 2006

Ejb componenets r deployed with the help of xml files (we have to tell the components to the container in form of xml files) container can understand the components

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