A question about EJB timeouts

Good day!
I encountered an interesting situation about EJB timer service.
1) For example, I created an implementing TimerObject Stateless Session Bean.
2) In ejbSetSessionContext method I created an timer to invoke ejbTimeout on my EJB every 15 seconds.
3) Ok. Container invokes this ejbTimeout every 15 sec. But what happens is previous ejbTimeout didn't returned because it is waiting for some connection for example. Would container invoke ejbTimeout while processing previous ejbTimeout on this one Stateless EJB?
I looked in EJB 2.1 spec. but didn't find corresponding answer.

Hi russiandroopy,
This isn't specifically mentioned in the spec because the design center of the Timer Service was not fine-grained events. The spec suggests that typical timeouts would be on the order of minutes or hours, which is typically much longer than the duration of the handling time within a timeout method or business method. In SUN's implementation we do not attempt to deliver a subsequent periodic timeout until the previous timeout completes successfully.
--ken

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Question about EJB and thread safe coding - asking again!

sorry everyone, no one seems to be interested in helping me on this, so i post it again.
i have a question about the EJB and thread safe coding. when we build EJBs, do we need to worry about thread safe issue? i know that EJBs are single threaded, and the container manages the thread for us. maybe i am wrong about this. if i wasnot, how can we program the EJB so that two or more instance of EJB are not going to have deadlock problem when accessing data resources. do we need to put syncronization in ours beans, do we even need to worry about creating a thread safe EJB? thanks in advance. the question really bothers me a lot lately.

sorry everyone, no one seems to be interested in
helping me on this, so i post it again.Excellent plan. Why not search a little bit on your own instead of waiting for your personal forum slaves to answer your call. See below.
i have a question about the EJB and thread safe
coding. when we build EJBs, do we need to worry about
thread safe issue? Read this: http://forum.java.sun.com/thread.jsp?forum=13&thread=562598&tstart=75&trange=15
i know that EJBs are single
threaded, and the container manages the thread for us.
maybe i am wrong about this. if i wasnot, how can we
program the EJB so that two or more instance of EJB
are not going to have deadlock problem when accessing
data resources. do we need to put syncronization in
ours beans, do we even need to worry about creating a
thread safe EJB? thanks in advance. the question
really bothers me a lot lately.
Java's Thread Tutorial
JavaWorld: Introduction to Java threads
IBM: Introduction to Java threads
Google: java+threads+tutorial

Questions about EJB

I'm new to EJB.
I want to know what is ant and JBoss ?
Is ant is used to deploy ?
And what is the advantages of deploy ?
Also, is this possible to run EJB in Tomcat 4.0 ?
sorry for too many question.
Thank you !

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Thanks a lot, Dom.

I have just read:
I think the problem is that local interfaces can only by
accessed through the same container, and JSP/Servlet's
one is different from EJB's one, regardless of you many
application server's instances do you have... Hope this
is the answer...Is there anyone who know if it applies too to 9iAS?
A+, Dom

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Hello,
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Thanks!
Maggie

Hi,
Weblogic
=======
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<table-map>
<table-name>SalesAccounts</table-name>
<field-map>
<cmp-field>salesaccountId</cmp-field>
<dbms-column>sales_acctid</dbms-column>
</field-map>
<field-map>
<cmp-field>salesbalance</cmp-field>
<dbms-column>sales_bal</dbms-column>
</field-map>
<field-map>
<cmp-field>salesaccountType</cmp-field>
<dbms-column>sales_type</dbms-column>
</field-map>
</table-map>
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</cmp-field>
<cmp-field><field-name>salesbalance</field-name>
</cmp-field>
<cmp-field><field-name>salesaccountType</field-name>
</cmp-field>
<primkey-field>salesaccountId</primkey-field>
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Now your EJB-QL can be defined in the ejb-jar.xml file as follows
<query>
<query-method>
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</method-params>
</query-method>
<ejb-ql>
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</ejb-ql>
</query>
This should clear ur doubts. Case u have any, revert back to me.
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valefr

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Are there any programs or guides (guidelines) who can
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http://java.sun.com/blueprints/corej2eepatterns/Patterns/index.html

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I got a "NoClassDefFoundError" when I bring up my servlet which tries
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ClassNotFound exception for the ejb interfaces while accessing from servlet
http://support.bea.com/askbea/wls/S-07398.html
Terrence Leung wrote:
I got a "NoClassDefFoundError" when I bring up my servlet which tries
to use a session bean. Can anyone tell me the correct way to deploy
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and
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servlets.
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"<wl dir>/config/mydomain/applications/testapp/WEB-INF/classes/examples/myservlet.class"
In the servlet, I am trying to use the mysession bean by calling
"create()" on mysession's home object. This is where I got the
"NoClassDefFoundError".
java.lang.NoClassDefFoundError: examples/mysession
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Class.java:237)
Is there something missing in my deployment procedure?
Thanks in advance

Question about Kurts comments discussing the seperation of AIA & CDP - Test Lab Guide: Deploying an AD CS Two-Tier PKI Hierarchy - Kurt L Hudson MSFT

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Know about EJB.

Hi,
I dont have any idea about EJB and also how the EJB is differ from java beans.
Thanks in advance.

Romain - I think the answer to your question is that the information
identifying the user is passed into the initial context parameters. Weblogic
uses this to propagate the security context from the servlet container to
the ejb container.
cheers,
Markus
"romain" <[email protected]> wrote in message
news:3b0e8b23$[email protected]..
>
Hi
perhaps it is a dummy question but I didn't find any explicit answer.
I'd like to know how the ejb can know if a user belongs to a role.
For example if I want to access my ejb with a servlet, and this servlet isprotected
(access allowed only for group customer)
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What I am wondering is when the user is authenticated in the servlet as acustomer
and then try to access the method how the ejb knows that this user is inthe group
customer??
Is this information included in the http session or in the initialcontextcreated
in the servlet or somewhere else??
thanks for your help
romain

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Hi everyone,
I have a question about the CSS behavior when using layer 3 sticky and sticky table is full.
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Note:
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when the sticky table becomes full and none of the entries have expired from
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or
Does CSS does not stick subsequence requests to particular service but CSS forward
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the CSS just works round-robin load balancing fashion for subsequence requests ?
Your information would be appreciated.
Best regards,

Hello,
There is a good document explaining this on Cisco web site
http://www.cisco.com/en/US/products/hw/contnetw/ps789/products_tech_note09186a0080094b4b.shtml
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Gaetan
Rgds
Gaetan

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Hi
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1)Filter->lens correction->search online
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it run faster , but talking about ajustament layer
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http://java.sun.com/products/ejb/docs.html
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Cheers,
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