stateful « Session « Java Enterprise Q&A





1. Ejb 3, message driven bean cooperating with a stateful session bean?    stackoverflow.com

Hey! I'm relative new to both Java EE and Stackowerflow, please be kind :-) I have a bunch of devices triggering Java messages to be sent on any state change. These ...

2. EJB 3: Accessing a stateful session bean from an application client    stackoverflow.com

I am having some trouble accessing a stateful session bean (SFSB) from an application client. I am using JBoss 5.0.1.GA. The application client and the EJBs are both packaged in an ...

3. Can I call a Stateful Session Bean through a Stateless Session Bean?    stackoverflow.com

Can I call a Stateful Session Bean through a Stateless Session Bean? Is the client of the SFSB then automatically the client of the SLSB for state preservation purposes? The problem ...

4. Why use stateful session beans?    stackoverflow.com

I'm learning ejb3 and I'm just curious when it's convenient to use SFSB? I can't find any nice example when SFSB realy solve easily some complex problem. Actually I see that SLSB ...

5. Possible to inject same stateful session bean instance into multiple other session beans?    stackoverflow.com

Is it possible to make the container inject the same stateful session bean instance into multiple other stateful session beans? Given the following classes:

@Stateful
public class StatefulTwoBean implements StatefulTwo {

    ...

6. How to use JNDI to obtain a new Stateful Session Bean, in EJB3?    stackoverflow.com

I'm trying to use JNDI to obtain a new Stateful Session Bean in a servlet (as a local variable). My doGet() method has the following:

Bean bean = (Bean) new InitialContext().lookup("beanName");
I've ...

7. Can we use both Stateless and Stateful session beans in a J2EE application?    stackoverflow.com

Is it good way to use both Stateless and Stateful session beans for the different modules if the requirement demands ?

8. EJB stateless session beans and stateful session bean    stackoverflow.com

I have gone through various books on stateful and stateless session bean and how they work.i want to know the real usage of these ejb beans and advantages over a plain ...

9. Is Terracotta used professionally?    stackoverflow.com

Today at work I had a discussion with my co-workers and my boss about stateless/stateful beans (we just finished a project using JSF, it was the first time anyone at this ...





10. JAVA EE - Can I use a stateful session bean in a phase listener?    stackoverflow.com

I have a phase listener on PhaseId.RESTORE_VIEW. It should put some Objects into a stateful session bean that should be availble there over a couple of requests. But when I call the session ...

11. Why is there only one stateful session bean?    stackoverflow.com

I tried following example for a stateful session bean http://www.roseindia.net/ejb/example-of-statelfulbean.shtml, but when I use two browsers I only get the same session bean.
I thought there is a session bean ...

12. Java EE use a stateful session bean for 2 user sessions?    stackoverflow.com

I'm trying to build a Java web based game. I was wondering how one would use an instance of a stateful session bean for two users. My game will be a ...

13. Stateful session bean, return objects    stackoverflow.com

I have a stateful session bean deployed on glassfish, and have a method called getCars which returns Collection of objects of Car class. Car class is defined in bean project and ...

14. Is there any way of interrupting a stateful session bean?    stackoverflow.com

This question is somewhat related to Handling a timeout in EJB3 without using threads. Background: I have an example of an operation that may lock up while it's running, and I ...

15. Testing Stateful Session Beans with Arquillian (arq-jbossas-remote)    stackoverflow.com

I have several @Stateful SessionBeans annotated like this:

@Stateful
@Remote(AdminFacade.class)
public class TAdminFacadeBean implements TgAdminFacade,Serializable
{
   ...
}
Now I want to test them with Arquillian (1.0.0.Alpha5), but get lot's of different errors, messages vary ...

16. Stateful Session Beans don't get default values after deserialization    stackoverflow.com

I was going through an EJB 3.1 book (O'Reilly, Andrew Lee Rubinger and Bill Burke), there the author is mentioning that (these are not the exact words in the book, this ...





17. Stateful Session Bean vs Stateless Session Bean    stackoverflow.com

In EJB3, we have two kinds of session bean Stateful and Stateless. In which case we have to use the Stateful ? How EJB3 manage the session of stateful session bean? ...

18. Setup MaxAge for Stateful Session Bean    stackoverflow.com

In J2EE, can we setup MaxAge for Stateful Session Bean? MaxAge is after a period time if no action on that SessionBean then that bean will be released. This same as ...

19. EJB 2.1 stateful session bean    stackoverflow.com

I have one scenario, I wrote business methods in stateful session beans using local interfaces. User can access the application in that time suddenly the database server is off. Again user restart ...

20. Use EJB 3.1 Singleton Bean as Client to Multiple Remote Stateful Session Beans    stackoverflow.com

I'm very new to EJB 3.1 and am trying to solve a server side problem; perhaps someone could offer some guidance. I have a state machine that represents the shared state of ...

21. Stateful session bean passivation with non-serializable EntityManager?    stackoverflow.com

I have just read Why stateful and local anti-facades are KISS by Adam Bien where he suggests using a SFSB with an EntityManager to keep entities attached during the ...

22. How does a stateful session bean regain state when client comes back?    stackoverflow.com

If the stateful session bean is going to passivate, its state is written to harddisk and then the bean instance will be freed to serve other request (at least this is ...

23. how stateful session bean works?    forums.netbeans.org

Hi! My problem that i can't use stateful session bean... I store the client name in a servlet with this method: this.aktivBean.setItem(id); and when i call it from another servlet,with this ...

24. Stateful & Stateless sessions    coderanch.com

I am kind of stuck here. Let me tell you what I did thus far:- 1) I used sessions to keep track of the inputted values and then I discovered that these sessions cannot keep values for more than 2 "hyperlinks". Meaning that, I input a value, press next, enter another value press next and then press two backs and the ...

25. EJB 3.0 Stateful Session Bean Example    go4expert.com

Hi, I have tried out the example available at thread 4212 using JBOSS 4.2.2 GA as webserver and MyEclipse as IDE. I got the following error. Can you please guide me on this? Exception in thread "main" javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial at ...

26. Learning Stateful session beans    java-forums.org

Hi I am learning stateful session beans, and I need some help and/or explanation. I created a very simple stateful bean. Java Code: public @Stateful class AdderBean implements Adder { private int data=0; public int getData(){ return data; } public void addData(int d){ data = data+d; } } I created a client servlet which reads an integer parameter from a textbox ...

27. [SOLVED] Invoking a Stateful Session Bean as Stateless    java-forums.org

Hi all, I have a stateful session Bean component which has already been developed and deployed. I now have a requirement that uses its methods but does not require its state to be saved. Can you suggest what is the best way to handle this change? Since I can't change the design at this point, should I just create a new ...

30. stateful vs stateless session bean    forums.oracle.com

Hi, I am trying to understand the difference between stateful and stateless session beans. As I understand difference is that when using stateful bean it remembers its state ( = its variables ). For that I have created stateful bean with simple get / set methods and I expect that when I call set(something) then I should get "something" when calling ...

31. reg: EJB stateful session bean    forums.oracle.com

hello friends, when i am reading EJB stateful session bean, came little bit confuse about how a statefull session bean will track that session bean belongs to a specific Clint.... As i think it may be using "" session using url rewriting technique ( session.encodeURL() ) .. just want to know how come it be correct.. if not can any one ...

32. Stateful Session Bean, After remove is called how do I create a new SFSB?    forums.oracle.com

The application when is deployed creates a new SFSB, after the remove method is called the SFSB does not exist anymore, also the same happens in a timeout. How do I create a new SFSB without restarting the server? I am using EJB 3.0 I don't understand really how in a shopping cart examples through different uses the correct SFSB is ...