SB has problem looking up the EB via JNDI.

[Timothy Toe]

I have a simple setup � a simple stateless session bean (SLSB) calling a CMP entity bean (EB) local interfaces. Problem looks like my SB has problem looking up the EB local home object via JNDI. I am using JBoss 4.0.3SP1.



ear deployed fine.
Console printout during deployment of ear:

    
16:25:26,015 INFO  [EARDeployer] Init J2EE application: file:/C:/apps/jboss-4.0.3SP1/server/default/deploy/InfoBank.ear
16:25:26,671 INFO  [EjbModule] Deploying EBInfoEJBName
16:25:26,687 INFO  [EjbModule] Deploying Info SLSB
16:25:26,859 INFO  [BaseLocalProxyFactory] Bound EJB LocalHome 'EBInfoEJBName' to jndi 'local/EBInfoEJBName@30693508'
16:25:27,000 INFO  [ProxyFactory] Bound EJB Home 'Info SLSB' to jndi 'ejb/Info_SLSB'
16:25:27,000 INFO  [EJBDeployer] Deployed: file:/C:/apps/jboss-4.0.3SP1/server/default/tmp/deploy/tmp18915InfoBank.ear-contents/InfoBank.jar
16:25:27,031 INFO  [TomcatDeployer] deploy, ctxPath=/infoBankContextRoot, warUrl=.../tmp/deploy/tmp18915InfoBank.ear-contents/InfoBank-exp.war/
16:25:27,281 INFO  [EARDeployer] Started J2EE application: file:/C:/apps/jboss-4.0.3SP1/server/default/deploy/InfoBank.ear
 

Console printout when error happened :

    
16:26:00,875 INFO  [STDOUT] javax.naming.NamingException: Could not dereference object [Root exception is java.lang.NullPointerException]
16:26:00,875 INFO  [STDOUT]     at org.jnp.interfaces.NamingContext.resolveLink(NamingContext.java:1052)
16:26:00,875 INFO  [STDOUT]     at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:685)
...
 

The exception stack trace point to this line of my code (the one with lookup()) in my SLSB. I lookup the EB from my SLSB:

    
            InitialContext ctx = new InitialContext();
            Object obj = ctx.lookup( "java:comp/env/ejb/EBInfoLocal" );
 

My ejb-jar.xml :

    
<enterprise-beans>
<!-- Session Beans -->
<session>
     <display-name>Info SLSB</display-name>
     <ejb-name>Info SLSB</ejb-name>
     <home>com.xxx.xxx.biztier.SBInfoHome</home>
     <remote>com.xxx.xxx.biztier.SBInfo</remote>
     <ejb-class>com.xxx.xxx.biztier.SBInfoBean</ejb-class>
     <session-type>Stateless</session-type>
     <transaction-type>Container</transaction-type>
     <ejb-local-ref>
     <ejb-ref-name>ejb/EBInfoLocal</ejb-ref-name>
     <ejb-ref-type>Entity</ejb-ref-type>
     <local-home>com.xxx.xxx.inttier.EBInfoLocalHome</local-home>
     <local>com.xxx.xxx.inttier.EBInfoLocal</local>
     <ejb-link>EBInfoDisplayName</ejb-link>
     </ejb-local-ref>
</session>
 
<entity>
<display-name>EBInfoDisplayName</display-name>
<ejb-name>EBInfoEJBName</ejb-name>
<local-home>com.xxx.xxx.inttier.EBInfoLocalHome</local-home>
<local>com.xxx.xxx.inttier.EBInfoLocal</local>
<ejb-class>com.xxx.xxx.inttier.EBInfoBean</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.Integer</prim-key-class>
<reentrant>False</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>Info_Try_EB</abstract-schema-name>
<cmp-field>
<field-name>InfoId</field-name>
</cmp-field>
<cmp-field>
<field-name>InfoText</field-name>
</cmp-field>
<primkey-field>InfoId</primkey-field>
</entity>
</enterprise-beans>
 

My jboss.xml for ejb jar :

<jboss>
<enterprise-beans>
<session>
<ejb-name>Info SLSB</ejb-name>
<jndi-name>ejb/Info_SLSB</jndi-name>
</session>

<entity>
<ejb-name>EBInfoEJBName</ejb-name>
<jndi-name>ejb/EBInfoLocal</jndi-name>
</entity>
</enterprise-beans>
<resource-managers>
</resource-managers>
</jboss>
 

What could be wrong ? Would really appreciate if someone could help me.
Thanks.

[ January 05, 2006: Message edited by: Timothy Toe ]
[ January 05, 2006: Message edited by: Timothy Toe ]

[Roger Chung-Wee]

Your ejb-link must match the ejb-name of the bean being link to.

<ejb-link>EBInfoEJBName</ejb-link>

[Timothy Toe]

Roger,

Thanks for pointing that out !

Timothy Toe