problem looking up an entity bean from a session bean

[watt]

My trouble is similar to the jsk'problem (Aug 31).
I deploy a session bean and an entity bean in the same jar file. When the session bean try to look up the entity bean, an error is raised:

javax.naming.CommunicationException. Root exception is java.net.MalformedURLException: no protocol: Files/jboss-2.2.1/tmp/deploy/Default/myJar.jar/ejb1001.jar

The code looking for the entity myEntity from the session bean mySessionBean is:

InitialContext ctx = new InitialContext ();
Object obj = ctx.lookup(myEntityName) ; // here it doesn't work
myEntityHome = (myEntityHome)PortableRemoteObject.narrow(obj,myEntityHome.class);

The XML file ejb-jar.xml seems to be good and contains the ejb-ref part:

<session>
...
<ejb-name>mySession</ejb-name>
...
<ejb-ref>
<ejb-ref-name>entity/MyEntity</ejb-ref-name>
<ejb-ref-type>Entity</ejb-ref-type>
<home>com.myPackage.MyEntityHome</home>
<remote>com.myPackage.MyEntity</remote>
<ejb-link>MyEntity</ejb-link>
</ejb-ref>
...
</session>

There is no jboss.xml.

If someone have a solution ...

Thanks,
watt.

[jsk]

Hi Watt

Look at my last reply in my problem. I have tried to descripe how to make it work.

What is assign to the myEntityName string ?

Jesper

[watt]

hello jsk,

I have looked at your solution but my problem is a bit different from yours because my beans are deployed in the same ejb-jar file. So, I don't think I need to use a .ear file.
Here is the entity's descriptor with the entity's name declaration:

<ejb-name>MyEntity</ejb-name>
com.myPackage.MyEntityHome
com.myPackage.MyEntity
<ejb-class>com.myPackage.MyEntityBean</ejb-class>
<persistence-type>Bean</persistence-type>
<prim-key-class>java.lang.Integer</prim-key-class>
False

[hrangamana]

Hi Sylvain,

Have you insert an ejb-ref entry within your ejb session in DD ? I think this may be the problem ...

Cheers ..

/Hermann

[watt]

Hi Rangamana,
As you can see above, I have inserted an ejb-ref in my descriptor.

Thanks for your encouragement.

[watt]

Sorry, I have not specified the value of the string myEntityName in my previous answer:

myEntityName="java:comp/env/entity/RessourceEntity"

[watt]

I hava made a mistake:
myEntityName="java:comp/env/entity/myEntity"

[lothar]

You have specified the ejb-ref-name entity/MyEntity the deployment descriptor and are using entity/myEntity in the code when the lowercase 'm' is not a typo in the post then that could be your problem.

[jsk]

Hi watt

Try using
myEntityName="java:comp/env/ejb/RessourceEntity
not
myEntityName="java:comp/env/entity/RessourceEntity

It worked for me.

I also think you need to specified
<ejb-ref>
<ejb-ref-name>ejb/MyEntity</ejb-ref-name>
<ejb-ref-type>Entity</ejb-ref-type>
com.myPackage.MyEntityHome
com.myPackage.MyEntity
<ejb-link>MyEntity</ejb-link>
</ejb-ref>


Note: In <ejb-ref-name> it has to be ejb/MyEntity not entity/MyEntity

I think it has something to do with the java:comp/env/ejb where alle EJB's are placed and has to be looked up from no matter its JNDI name.

You also have to create a jboss.xml as well also including <ejb-ref> tags to deploy correctly.

Jesper

[watt]

Hi,
Thinks for all your advices, but nothing solves my problem. The exception "no protocole" is always raised when my session bean try to look up for the entity bean.
I avoid the trouble by setting the classpath to my classes's directory so that JBoss doesn't need to find the file generated in the temp directory. But it is just a temporary solution.
So I ask myself whether my local variables like JBOSS_CLASSPATH or CLASSPATH was rightly setting up or not.
My question is: must the CLASSPATH or the JBOSS_CLASSPATH point a specific sub-directory (like 'deploy') of the jboss's main directory ?

I am very grateful for your help.

[p_d_austin]

Try moving your jboss installation to a directory that does not have a space in it and see if that works.

Paul