Differences between @EJB and @Resouce?
Hi,
I am confused about the differences between @EJB and @Resource?
1.
Can Session Beans be injected for both?
If so what are the pro's / con's?
2.
Are the any difference between the type of components that cna be registered for one but not the other?
3.
Are they both equally usable with the ENC?
Many thanks.
@EJBs are 'special' resources. For example, @EJB (for a stateful session bean) results in
1. Creation of the Stateful Session Bean,
2. Other dependencies are injected into this newly created bean,
3. If the bean has a @PostConstruct bean then that method is invoked (after invoking applicable interceptors)
Hope this helps
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http://java.sun.com/docs/books/tutorial/javabeans/ -
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1) Ejb Object Handle are nothing but a long lived proxy for the
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E-mail-ID : [email protected]
"John Stive" <[email protected]> wrote:
>
Hi:
I am newbie for J2EE.
I want to know what is the difference between ejb reference and ejb
handle
from the client view and from the container view?
Very Thanks!
Stive -
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<[email protected]> wrote in message news:3b16f1db$[email protected]..
|
| I have a test about simplest cluster,admin and managed server all told me
"start
| cluster service"!the two IP address use ONE DomainName,If one down,when I
send
| request with dn,It first look up admin server,no found and then go dns to
search
| another server,about one minute then the server send response to me!
|
This is DNS fail-over.
| But when I do not config a cluster,only start two admin server and give
them the
| same dns,the same appearance as cluster!
| I don't understand the difference between cluster and multi-IP--DNS
mapping??
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