A session bean encapsulates business logic that can be invoked programmatically by a client over local, remote, or web service client views. More specifically, a stateless session bean does not maintain a conversational state with the client, so it is mostly used as a service(e.g. rest api, persistence-retrieval) and does specific job without the need of keeping a state.
Questions tagged [stateless-session-bean]
188 questions
4
votes
2 answers
What does a stateless session bean provide over just a normal class?
What would a stateless session bean provide over just a regular class that has the same methods? It seems that a stateful session bean can be distributed out of the box and the container will make sure that the state looks the same to clients…
benstpierre
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votes
2 answers
jndi binding for local and remote stateless bean
I'm trying to implements an EJB3 stateless with a remote and local interfaces the problem is the local one is called in an other remote EJB with the annotation @EJB but it returns null or ClassCastException (java.lang.ClassCastException:…
R Vive L OL
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EJB-@Singleton to manage query results
Should I use EJB-@Singleton (javax.ejb.Singleton) for statistics or monitoring or would it be better to cache the statistics in common @SessionScoped-Bean? To clear my question, here are two scenarios:
Scenario I:
A User begins a Websession and…
nimo23
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Stateless EJB with more injected EJBs instances
I know Stateless EJBs are stored in a pool and instantiated as needed, my question is, what happens when there are more EJB dependencies, for example with something like this:
@Remote
@Stateless
public class Master_EJB{
@EJB
private EJB_A…
jasalguero
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2 answers
Transaction TimeOut EJB impact on the thread
A question on EJB:
Let's say I have a session bean which has an infinite loop. It is running under a EJB transaction. Now when the transaction of the EJB times out, will that cause the infinite loop thread to break or container will stop the thread…
Sandeep Jindal
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0 answers
Startup ejb depending on another startup ejb in another module
I have a singleton startup ejb A which depends on another singleton startup ejb B which is in another module. I added depends on annotation but the deployment failed with no ejb found exception.
Then I moved the startup ejb to the module where the…
Krishna Chaitanya
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3 answers
Stateless Session Bean
Do I package a stateless session bean in a war file or a ear file for deployment?
user422930
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Lookup EJB with local interface on WildFly
I've got an ear with the following structure:
app-ear
app-api
app-ejb
app-web
The app-web and app-ejb depends on the app-api module, but they are not depending on each other.
The interfaces (app-api) and the bean…
Zolee
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How to inject a Stateless Session Bean into a Message Driven Bean?
I'm trying to inject a remote stateless session bean in a message driven bean.
I've been looking this post:
How to inject a Session Bean into a Message Driven Bean?
The Session Bean and the Message Driven Bean are in two diff.
Here an exemple of…
user1857028
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why pool stateless bean?
Normally we use singleton instance for business / dao layer. What is the reason behind pooling stateless session beans in case of EJBs?
Magesh Pachiyappan
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1 answer
Proper use of instance variables in a stateless EJB timer
I know that the use of instance variables within stateless session beans is a popular discussion topic and have already read some of them, but what i am specifically need from this topic, is the actual proper design of my application.
My enterprise…
user1755745
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3
votes
2 answers
Singleton vs Stateless beans in the architecture of a Java EE application
A part of business logic at the core of my project has to perform a search on linked-data. Currently, I have implemented this part using a singleton session bean like this (SPARQL is a query language on RDF models which are constructed using linked…
Arash Shahkar
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1 answer
Any thread safety benefits of exposing a web service as a stateless session bean?
Are there are any thread safety related benefits of exposing a web service as a stateless session bean?
(Correct me if i am wrong) but I think web services are not thread safe and like Servlets only one instance of a web service class is created by…
Robin Bajaj
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votes
1 answer
Can I be sure that a SLSB which created a Timer will be handling its timeout (Java EE 5)?
In Java EE 5, when using timers and the timer service, who handles the timeout invocation?
Can I be sure that the stateless session bean which created the timer wil be the one to handle its timeout (with a @Timeout annoateted method)? or there's no…
wafwaf
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EJB3 DAO stateless session bean design (use JDBC connection)
I'm designing a DAO layer for a EJB3 project, they are stateless session bean. For some reason, part of DAOs won't use JPA, they access database directly with JDBC.
So instead of injecting EntityManager, I inject a Datasource and from it I can get…
cn1h
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