Call EJB From WebDynpro

Hai Experts,
I want to call an EJB from a web dynpro not by using wrapper class or by using a Ejb.jar in WD's classpath.
The idea is to use reflection and Properties class to call an EJB . Is it possible to call an EJB as mentioned above.
Please help me to solve it.
Thanks in advance.
Regards,
R.Jude Silvester.

Hi
Check this link
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/00bddb57-456c-2b10-cc8d-b6980d75299b
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/1f5f3366-0401-0010-d6b0-e85a49e93a5c
Thanks
Tulasi
Edited by: Tulasi Palnati on Feb 3, 2009 6:53 AM

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          >-------------------------------------------------------------------->
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Hey,
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http://help.sap.com/saphelp_nwce10/helpdata/en/44/58f9cc0d95311ce10000000a155369/frameset.htm
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Can I call EJB from other EJB on other J2EE Server
Servers - Websphere 5.0
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the problem is actually i require that is specific to websphere
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Proxy Program to call ejb:
import javax.naming.Context;
import javax.naming.InitialContext;
import com.sample.Hello;
import com.sample.HelloHome;
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ejb20.jar
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exception.jar
sapj2eeclient.jar
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Hello, everybody,
I'm very new at EJB and I'm trying to learn it.
I have created Enterprise Application using Netbeans IDE, I have EJB and APP client. What I want is to connect to my MySql database and get some info from table.
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What server you are using?
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package com.david.ejb.client;
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import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
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import com.david.ejb.domain.PersonRemote;
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          p.setProperty(Context.PROVIDER_URL, "jnp://localhost:1099");
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}Person is ant @Entity and PersonRemote is remote interfaces, to connect database you have to make datasource file at jboss-4.2.3.GA\server\default\deploy
simle mysql-ds.xml looks like this:
datasources>
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      <user-name>root</user-name>
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</datasources>also at resources/META-INF directory you must have persistence.xml like this
<persistence>
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Calling EJB from class in same ear

Has anyone ever attempted to call an EJB from a class that is in the same ear?
I have a singleton class, not
another EJB, that is trying to get ahold of an EJB to call a method. This method
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I thought I should be able to get a hold of the local interface. When I try to
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as follows:
PickupCpaLocalHome cpaHome = (PickupCpaLocalHome) ctx.lookup("pickup.PickupCpaEJBLocal");
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javax.naming.LinkException: [Root exception is
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     Unresolved:'PickupCpaEJB.jar#PickupCpaEJB' ; remaining name
     'PickupCpaEJB.jar#PickupCpaEJB/local-home']; Link Remaining Name:
'java:app/ejb/PickupCpaEJB.jar#PickupCpaEJB/local-home'
When I look at the JNDI tree using the WebLogic console, it shows that "pickup.PickupCpaEJBLocal"
is
in JNDI.
Since the local interface doesn't work, I thought I'd try the remote interface.
The remote interface
works fine from my client and from another EJB in a different ear. Using the
remote interface I get an
exception when trying to cast the result to my home.
java.lang.ClassCastException:
com.fedex.pickup.j2ee.ejb.cpa.PickupCpaEJB_gapk5_HomeImpl_WLStub
// Code
PickupCpaHome cpaHome = (PickupCpaHome) ctx.lookup("pickup.PickupCpaEJBRemote");
As I mentioned earlier, the same code works in a client and in an EJB in another
ear.
Any ideas

Has anyone ever attempted to call an EJB from a class that is in the same ear?
I have a singleton class, not
another EJB, that is trying to get ahold of an EJB to call a method. This method
has been defined to have both
a local and remote interface.
I thought I should be able to get a hold of the local interface. When I try to
get the interface out of JNDI
as follows:
PickupCpaLocalHome cpaHome = (PickupCpaLocalHome) ctx.lookup("pickup.PickupCpaEJBLocal");
I get an exception:
javax.naming.LinkException: [Root exception is
     javax.naming.NameNotFoundException: Unable to resolve
     'app/ejb/PickupCpaEJB.jar#PickupCpaEJB/local-home' Resolved: 'app/ejb'
     Unresolved:'PickupCpaEJB.jar#PickupCpaEJB' ; remaining name
     'PickupCpaEJB.jar#PickupCpaEJB/local-home']; Link Remaining Name:
'java:app/ejb/PickupCpaEJB.jar#PickupCpaEJB/local-home'
When I look at the JNDI tree using the WebLogic console, it shows that "pickup.PickupCpaEJBLocal"
is
in JNDI.
Since the local interface doesn't work, I thought I'd try the remote interface.
The remote interface
works fine from my client and from another EJB in a different ear. Using the
remote interface I get an
exception when trying to cast the result to my home.
java.lang.ClassCastException:
com.fedex.pickup.j2ee.ejb.cpa.PickupCpaEJB_gapk5_HomeImpl_WLStub
// Code
PickupCpaHome cpaHome = (PickupCpaHome) ctx.lookup("pickup.PickupCpaEJBRemote");
As I mentioned earlier, the same code works in a client and in an EJB in another
ear.
Any ideas

Calling EJB from JSP in SSL Mode

Hi,
I need to call an EJB from JSP in SSL Mode.
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Regards,
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In that case you can refer to the following documents:
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I have an existing form (version 11.1.2.0.0) and an existing ejb. Both are running on a WebLogic server version 10.3.5.0. I want to call the ejb from the form (I know that this is not recommended, but in this case it is the only sensible solution). I have tried searching the web but I have not been able to find anything about this except some broken links.
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Regards,
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Edited by: SvSig on Aug 7, 2012 11:52 PM

Let's skip the fact that you are asking about an EJB and instead talk about what options are available to call out to any external app or component. Here are some of the options:
<blockquote>1. To make calls from the client machine to any web server (HTTP listener) you can use WEB.SHOW_DOCUMENT. This command simply passes a url to a browser. No return information is passed back into the running form.
2. To make calls from the client machine to almost any process on the client side, including the OS directly, you would need to create a java bean and integrate it into your form. Whether or not you get return information will depend on how you write the bean and to what you are calling.
3. To make calls from the server side (mid tier) part of a running form to an external application or component on the same mid tier you can use the HOST command. This executes a shell command. Although specific information cannot be returned (i.e. return values), you can get pass or fail results.
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<blockquote>http://docs.oracle.com/cd/E24269_01/doc.11120/e24477/toc.htm</blockquote>
Look specifically at chapters 6-8
<blockquote><li>6 Oracle Forms and JavaScript Integration
<li>7 Enhanced Java Support
<li>8 Working with Server Events</blockquote>
Summary
<blockquote><li>WEB.SHOW_DOCUMENT
<li>HOST
<li>Java Bean
<li>Imported Java</blockquote>

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I need to call EJB that's created in JBoss from coldfusion.
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If I prefix provider url with jnp://, then I get the
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If I take the jnp out and keep just the ip address and port,
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Here's my code

I tries to call custom EJBfrom custom component received
follwong error
ERROR [STDERR] javax.naming.CommunicationException [Root exception is java.lang.ClassNotFoundException:
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Hi!!
My JSP/Servlets are on iWS, and I deploy EJB on iAS.
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and EJB.
Thanks in advance!!!
- Park-

Park,
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reason,
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case and the sample explains in detail what to do.
hth,
-robert
"SungHyun, Park" <[email protected]> wrote in message
news:9jpfmt$[email protected]..
Hi!!
My JSP/Servlets are on iWS, and I deploy EJB on iAS.
In this case, I don't know how JSP/Servlet call EJb on iAS.
I'd like to know how I can set JNDI name in JSP/Servlet on iWS.
I will thank you if you give me a simple example source using JSP/Servlet
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Thanks in advance!!!
- Park-

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Hi,
Im trying to deploy two EAR application modules, both on same WLS7.0 SP2 server
. I have several problems to give visibility between EAR applications. There is
dependences between both applications ( I will call them FirstEAR and SecondEAR)
. A FirstEAR EJB ( FirstEAREJB) uses an EJB from the SecondEAR ( SecondEAREJB
The deployment result is a "Unable to initialize method info for remote or home
interface The error is java.lang.NoClassDefFoundError: myPackage.myPackage.SECONDEAREJB"
when deploy the FirstEAREJB. I try the deployment of both using -iiop ejbc option.
Which is the way to allow my FirstEAREJB to use SECONDEAREJB?
I have try
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- to set the descriptor ejb-jar properties for EJBRefs with no results.
- to set the SecondEAREJB path in the weblogic start script classpath, with no
results.
- to set the SecondEAR classpath at the ejbc -cp option for FirstEAREJB ejbc
compile, with no results again.
Is there another way to allow my FirstEAREJB to use SecondEAREJB ?

Take a look at this documentation on WebLogic Server Application
Classloading.
It might be helpful.
http://edocs.bea.com/wls/docs70/programming/classloading.html
/k
"Adolfo Cortés" <[email protected]> wrote in message
news:[email protected]..
>
Hi,
Im trying to deploy two EAR application modules, both on same WLS7.0 SP2server
I have several problems to give visibility between EAR applications.There is
dependences between both applications ( I will call them FirstEAR andSecondEAR)
A FirstEAR EJB ( FirstEAREJB) uses an EJB from the SecondEAR (SecondEAREJB
The deployment result is a "Unable to initialize method info for remote orhome
interface The error is java.lang.NoClassDefFoundError:myPackage.myPackage.SECONDEAREJB"
when deploy the FirstEAREJB. I try the deployment of both using -iiop ejbcoption.
>
Which is the way to allow my FirstEAREJB to use SECONDEAREJB?
I have try
- to set the manifest Class-Path property for FirstEAREJB with noresults.
- to set the descriptor ejb-jar properties for EJBRefs with no results.
- to set the SecondEAREJB path in the weblogic start script classpath,with no
results.
- to set the SecondEAR classpath at the ejbc -cp option for FirstEAREJBejbc
compile, with no results again.
Is there another way to allow my FirstEAREJB to use SecondEAREJB ?

Call EJB from a XI Javamapping

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<Trace level="1" type="T">*** START APPLICATION TRACE ***</Trace>
<Trace level="2" type="T">Got object from jndi: [email protected]30</Trace>
<Trace level="1" type="T">*** END APPLICATION TRACE ***</Trace>
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Hello.
Check my wiki article:
http://wiki.sdn.sap.com/wiki/display/stage/SapNetweaverProcessIntegration.CallEjb3.0methodfromJavaclassmappingPI7.1
(SapNetweaver Process Integration. Call Ejb 3.0 method from Java class mapping PI 7.1)

Call EJB From WebDynpro

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