StackOverflow2013

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plurals

PO
primarykey
Id
20570804
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
2
CommunityOwnedDate
CreationDate
2013-12-13T16:04:21.493
FavoriteCount
0
LastActivityDate
2016-08-02T04:24:26.910
LastEditDate
2016-08-02T04:24:26.910
LastEditorUserId
1104328
OwnerUserId
1418643
ParentId
20558125
PostTypeId
2
Score
11
ViewCount
0
LastEditorDisplayName
text
Body
Matthias is spot on. A @Stateless annotated bean is an EJB which by default provides <a href="http://docs.oracle.com/javaee/6/tutorial/doc/bncij.html" rel="noreferrer">Container-Managed-Transactions</a>. CMT will by default create a new transaction if the client of the EJB did not provide one. <blockquote> Required Attribute If the client is running within a transaction and invokes the enterprise bean’s method, the method executes within the client’s transaction. If the client is not associated with a transaction, the container starts a new transaction before running the method. The Required attribute is the implicit transaction attribute for all enterprise bean methods running with container-managed transaction demarcation. You typically do not set the Required attribute unless you need to override another transaction attribute. Because transaction attributes are declarative, you can easily change them later. </blockquote> In the recent java-ee-7 <a href="http://www.oracle.com/technetwork/articles/java/jaxrs20-1929352.html" rel="noreferrer">tuturial</a> on jax-rs, Oracle has example of using EJBs (@Stateless). <blockquote> ... the combination of EJB's @javax.ejb.Asynchronous annotation and the @Suspended AsyncResponse enables asynchronous execution of business logic with eventual notification of the interested client. Any JAX-RS root resource can be annotated with @Stateless or @Singleton annotations and can, in effect, function as an EJB .. </blockquote> Main difference between @RequestScoped vs @Stateless in this scenario will be that the container can pool the EJBs and avoid some expensive construct/destroy operations that might be needed for beans that would otherwise be constructed on every request.
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PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. PO@Stateless vs @RequestScoped
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PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USHarry
UserOwnerUserId
1. USAksel Willgert
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PostsAcceptedAnswerId
1. PO@Stateless vs @RequestScoped
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