How to use annotation to configure ejb3

[honeychen03]

as the title. Wanting to get rid of ejb-jar.xml, etc configuration files by using annotation for ejb3. Is there a doc link that I can visit? Much appreciated.

[jaikiran]

The EJB3 tutorials here http://docs.jboss.org/ejb3/docs/tutorial/1.0.7/html/index.html have the examples. Depending on which configurations you want to move out of the ejb-jar.xml, you'll have to look at the appropriate chapter.

[honeychen03]

I am trying to move the mdb configuration out of ejb-jar.xml and jboss.xml located in my ear. Can you give me more specific instruction doc about the mdb annotation configuration since it is a bit hard for me to search in the bunch of links?

[honeychen03]

I got this link (http://docs.jboss.org/ejb3/docs/tutorial/1.0.7/html/Message_Driven_Beans_with_deployment_descriptor.html) about the configuration of MDB but it describes how to configure it in xml. Is there an example about how to configure this by

@ActivationConfigProperty

detailedly

[peterj]

JBoss in Action lists the valid ActivationConfigProperty properties that can be used for JBoss Messaging. There are several defined by the EJB3 spec so I suspect I got those from there. There are also several properties specific to JBoss Messaging but I don't know exactly where I got those from - could be one of the Messaging docs, but I can't find it there, or it could be the source code (since that is the definitive source).

[jpiel]

First I use JBoss 5.1

If you want to use simple MDBs I think it will work with an annotated configuration like this:

@MessageDriven(name = "someName", activationConfig = {

        @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue"),

        @ActivationConfigProperty(propertyName = "destination", propertyValue = "queue/someName")

The first ActivationConfigProperty defines the kind of queue from where the MDB retrieves messages. The javax.jms.Queue works for me.

The second one defines the destination itselfs. You have to configure it in the \server\default\deploy\messaging\destinations-service.xml in a way like this:

<mbean code="org.jboss.jms.server.destination.QueueService"

      name="jboss.messaging.destination:service=Queue,name=someName"

      xmbean-dd="xmdesc/Queue-xmbean.xml">

      <depends optional-attribute-name="ServerPeer">jboss.messaging:service=ServerPeer</depends>

      <depends>jboss.messaging:service=PostOffice</depends>

   </mbean>

Then you can look up the ConnectionFactory with the name queue/someName.

I think that's all but I'm not using MDB very often.

[honeychen03]

Thanks so much, jan. I have a question about how to configure the durability with the annotation. The old configuration in ejb-jar.xml is

<subscription-durability>

                                                  Durable

                                        </subscription-durability>

Do you know or anybody else has an idea about this?

[jaikiran]

See the table here http://docs.jboss.org/ejb3/docs/tutorial/1.0.7/html/Message_Driven_Beans.html

[honeychen03]

Hi jaikiran,

Could you please tell me which jar(s) is used for importing the @MessageDriven and @ActivationConfigProperty in JBoss 6.0.0.Final's library?

Thanks.

[jaikiran]

JBOSS_HOME/client/jboss-ejb-api_3.1_spec.jar

[honeychen03]

One last question:

what is the annotation property for the old configuration below

<transaction-type>Bean/Container</transaction-type>

[honeychen03]

Is there any other things that I need to do?

I configured following in my MDB

@MessageDriven(activationConfig =

{

        @ActivationConfigProperty(propertyName = "destination", propertyValue = "queue/com.globalsight.everest.jms.WorkflowAdditions"),

        @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue"),

        @ActivationConfigProperty(propertyName = "subscriptionDurability", propertyValue = "Durable")})

and added below queue into hornetq-jms.xml

<queue name="WorkflowAdditions">

    <entry name="queue/com.globalsight.everest.jms.WorkflowAdditions"/>

</queue>

JBoss started correctly but after jms sends the messge, the onMessage method does not receive the request. Note: I have removed original configuration for this MDB from ejb-jar.xml and jboss.xml.

Please advise.