Error when calling an EJB from a web sevice

[Former Member]

Hi all,

I am getting the following error while trying to the lookup for my session bean

com.sap.engine.services.jndi.persistent.exceptions.NameNotFoundException: Path to object does not exist at java:comp, the whole lookup name is java:comp/env/ejb/MyProcessorBean

here's a part of my code:

String WebserviceFunction()

{

//

Context ctx = new InitialContext();

BiasProcessorLocalHome orderHome =(BiasProcessorLocalHome)ctx.lookup("java:comp/env/ejb/MyProcessorBean");

//

}

I am using NWDS Version: 7.0.09

SAP NetWeaver 2004s.

I did find some threads related to it but none has been answered or weren't

that helpful in solving my problem.

Thanks

null

[Vlado · Accepted solution]

Hi,

What is the implementation of your Web service? If it's another EJB then you have to define an ejb-local-ref in the deployment descriptor for that other EJB, like this:

<ejb-local-ref>
    <ejb-ref-name>ejb/MyProcessorBean</ejb-ref-name>
    <ejb-ref-type>Session</ejb-ref-type>
    <local-home>your.package.BiasProcessorLocalHome</local-home>
    <local>your.package.BiasProcessorLocal</local>
</ejb-local-ref>

If it's not a J2EE component, there is no java:comp environment naming context (ENC) available. In this case you can look up the EJB local home from the "localejbs/" context, e.g. "localejbs/provider.name/YourAppName/YourEjbName". By default the provider name is "sap.com".

For more information please refer to <a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webas/java/accessing%20ejb%20applications%20using%20jndi.pdf">this article</a>.

HTH!

-- Vladimir

[Former Member · Accepted solution]

Thanks Baris Buyuktanir and Vladimir Pavlov for replying.

@Baris Buyuktanir:

Am trying to use and call the session bean from one of my Web service function(my ejb and web service are two separate projects)

Well.... I tried out that option too and it gave me another error saying:

java.lang.ClassCastException: com.sap.bias.session.MyProcessorLocalHome

@ Vladimir Pavlov:

Actually I created the project as a Java project and converted it into a web service

by creating the VI and WS definitions.

And there is not deployment descriptor (web.xml) in my project.

I tried including it (web.xml with the ejb local ref ) in my project manually but I guess it's not reading from it. Any way of including the reference in the ws-deployment-descriptor.xml. Coz I tried and and it gave an error while deploying my project(web service).

=======================================

Ok!! I Solved it with the help of the link that Vladimir provided.

Initially I was trying to reference the ejb in my ws-deployment-descriptor.xml but it was giving an error while deploying so I tried it in my application-j2ee-engine.xml and it worked.

Thanks to Vladimir and Baris too.

Regards,

Tali

Message was edited by:

talimeren Lkr

[Former Member]

Hi,

From where are you tying to reach your ejb?

For local references try

ctx.lookup("localejbs/sap.com/yourEARname/yourEJB");