EJB 3.0 Session Bean Remote Client

Hi,
I am planning to migrate my EJB 2.1 to EJB 3.0. My old session bean is accessed by a remote java client. I just have to include this piece of code:
Hashtable props = new Hashtable();
props.put("java.naming.factory.initial", com.sun.jndi.cosnaming.CNCtxFactory");
props.put("java.naming.provider.url", "iiop://" + host_ + ":" + port_);I also have to generate rmistubs for the ejb. I have deployed my EJB 3.0 in a Sun Appserver, checking the "Generate RMIStubs" box but I couldn't find the client jar file. In EJB 3.0, should I use the same approach as the 2.1? Or should I use the @EJB annotation? How will I access a remote EJB 3.0 using the @EJB annotation? Thanks in advance.
Regards,
Andrew
Message was edited by:
bashdrew

EJB 3.0 remote business interfaces are do not have the same interoperability requirements as the EJB 2.x Home/Remote view. If you need access to your EJB 3.0 bean from a legacy client, you can add a 2.x-style Home/Remote view to your bean by either using the <home>/<remote> elements in ejb-jar.xml or the @RemoteHome annotation. Note that the 2.x-style Home/Remote interfaces are completely separate from the 3.0 Remote Business interface.
Also, in SUN's implementation if your EJB 3.0 bean has both a 3.0 Remote business and a 2.x Home/Remote interface there is no default global JNDI name for the bean. You'll need to assign it explicitly using the @Stateless/@Stateful mappedName() attribute or sun-ejb-jar.xml.
--ken

Similar Messages

Creating EJB 3.0 Session Bean under JDeveloper 10g.

Hello im using JDeveloper 10 g all up 2 date.
when i create EJB 2.x EJB everythink is ok .. there is a Wizzard(Designer) from which i can add methods variables and etc.
all methods are become added to the session bean / remote interefeis etc.
My Problem is when i create EJB 3.0
when i do it the Bean class is created and the Remote interfeis with @remote is created too its ok BUT I CANT see Remote interfeis in my Application Naviagation its fine under 2.1 i cannot see remote interfeis and home interfeis too but inder 2.1 there is a wizzard(Designer) under 3.0 there is nothink.
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Cannot deploy a EJB 3.0 Session bean to the OAS 10.1.3.4

Hi All,
I am unable to deploy a EJB 3.0 Session bean with no deployment descriptors to OAS 10.1.3.4 App server.This Session bean is also exposed as a web service using annotations. I am able to deploy this bean to a standalone oc4j 10.1.3.x containers and test it successfully.
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Below is the error while deploying:
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java.lang.NullPointerException
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which jdk version? Had this with 1.6 and had to install an up-to-date jdbc.

How create EJB 2.1 Stateful Session Bean in a EJB 3.0 Session Bean

Hi All,
We have been developing on EJB 2.1. We are now adding a module on EJB 3.0.
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We have tried
// this is the remote interface
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Any help will be appreciated.

There is no explicit create() call for EJB 3.0 session beans. It doesn't really matter though
since you can accomplish the same thing by defining your own business method to act
as an initializer for whatever state you'd like. E.g.
@Remote
public interface FooInterface {
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// ... other business methods
@EJB FooInterface fooRef;
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--ken

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Now Jdeveloper 11.1.1, is giving WebLogic server 10.3.
With internal WebLogic server, when I created a Sample client, it generated code as:
private static Context getInitialContext() throws NamingException {
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regds
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Raju,
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[http://wiki.eclipse.org/EclipseLink/Examples/JPA/WebLogic_Web_Tutorial]
using @EJB injection on the client instead of a JNDI lookup as below
[http://edocs.bea.com/wls/docs103/ejb30/annotations.html#wp1417411]
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2) your name#qualified-name lookup looks ok. Verify that the jndi-name element is set in your weblogic-ejb-jar.xml for non injection clients like the following
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>ApplicationService</ejb-name>
<jndi-name>ApplicationService</jndi-name>
3) as a test outside of your application - launch the WebLogic admin console and goto the testing tab of your bean in [Home > Summary of Deployments > "application" > "session bean name"
thank you
/michael : http://www.eclipselink.org

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It seems to me that EJB 3 calling EJB 2 would be fine, but not in the reverse?

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How call session bean from Client side

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calling session bean from client side it gives Lookup erroe, it gives JNDI error
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null

If you can make a connection using sess_sh, then you know that you have configured your database and listener properly. If it is not working, read the manuals that you can download from technet. They are pretty good, and if you follow the directions, you should see success.
Good Luck!
Brad

Unable to call exported client methods of EJB session bean remote interface

I am unable to call client methods of a BC4J application module deployed as a Session EJB to Oracle 8i at the client side of my multi-tier application. There is no documentation, and I am unable to understand how I should do it.
A business components project has been created. For instance, its application module is called BestdataModule. A few custom methods have been added to BestdataModuleImpl.java file, for instance:
public void doNothingNoArgs() {
public void doNothingOneArg(String astr) {
public void setCertificate(String userName, String userPassword) {
theCertificate = new Certificate(userName, userPassword);
public String getPermission() {
if (theCertificate != null)
{if (theCertificate.getPermission())
{return("Yes");
else return("No, expired");
else return("No, absent");
theCertificate being a protected class variable and Certificate being a class, etc.
The application module has been tested in the local mode, made remotable to be deployed as EJB session bean, methods to appear at the client side have been selected. The application module has been successfully deployed to Oracle 8.1.7 and tested in the remote mode. A custom library containing BestdataModuleEJBClient.jar and BestDataCommonEJB.jar has been created.
Then I try to create a client basing on Example Oracle8i/EJB Client snippet:
package bestclients;
import java.lang.*;
import java.sql.*;
import java.util.*;
import javax.naming.*;
import oracle.aurora.jndi.sess_iiop.*;
import oracle.jbo.*;
import oracle.jbo.client.remote.ejb.*;
import oracle.jbo.common.remote.*;
import oracle.jbo.common.remote.ejb.*;
import oracle.jdeveloper.html.*;
import bestdata.client.ejb.*;
import bestdata.common.ejb.*;
import bestdata.common.*;
import bestdata.client.ejb.BestdataModuleEJBClient;
public class BestClients extends Object {
static Hashtable env = new Hashtable(10);
public static void main(String[] args) {
String ejbUrl = "sess_iiop://localhost:2481:ORCL/test/TESTER/ejb/bestdata.BestdataModule";
String username = "TESTER";
String password = "TESTER";
Hashtable environment = new Hashtable();
environment.put(javax.naming.Context.URL_PKG_PREFIXES, "oracle.aurora.jndi");
environment.put(Context.SECURITY_PRINCIPAL, username);
environment.put(Context.SECURITY_CREDENTIALS, password);
environment.put(Context.SECURITY_AUTHENTICATION, ServiceCtx.NON_SSL_LOGIN);
BestdataModuleHome homeInterface = null;
try {
Context ic = new InitialContext(environment);
homeInterface = (BestdataModuleHome)ic.lookup(ejbUrl);
catch (ActivationException e) {
System.out.println(e.getMessage());
e.printStackTrace();
System.exit(1);
catch (CommunicationException e) {
System.out.println(e.getMessage());
e.printStackTrace();
System.exit(1);
catch (NamingException e) {
System.out.println(e.getMessage());
e.printStackTrace();
System.exit(1);
try {
System.out.println("Creating a new EJB instance");
RemoteBestdataModule remoteInterface = homeInterface.create();
// Method calls go here!
// e.g.
// System.out.println(remoteInterface.foo());
catch (Exception e) {
System.out.println(e.getMessage());
e.printStackTrace();
It doesnt cause any errors. However, how must I call methods? The public interface RemoteBestdataModule has no such methods:
void doNothingNoArgs();
void doNothingOneArg(java.lang.String astr);
void setCertificate(java.lang.String userName, java.lang.String userPassword);
java.lang.String getPermission();
Instead of that it has the following methods:
oracle.jbo.common.remote.PiggybackReturn doNothingNoArgs(byte[] _pb) throws oracle.jbo.common.remote.ejb.RemoteJboException, java.rmi.RemoteException;
oracle.jbo.common.remote.PiggybackReturn doNothingOneArg(byte[] _pb, java.lang.String astr) throws oracle.jbo.common.remote.ejb.RemoteJboException, java.rmi.RemoteException;
oracle.jbo.common.remote.PiggybackReturn customQueryExec(byte[] _pb, java.lang.String aQuery) throws oracle.jbo.common.remote.ejb.RemoteJboException, java.rmi.RemoteException;
oracle.jbo.common.remote.PiggybackReturn setCertificate(byte[] _pb, java.lang.String userName, java.lang.String userPassword) throws oracle.jbo.common.remote.ejb.RemoteJboException, java.rmi.RemoteException;
oracle.jbo.common.remote.PiggybackReturn getPermission(byte[] _pb) throws oracle.jbo.common.remote.ejb.RemoteJboException, java.rmi.RemoteException;
I cannot call those methods. I can see how they are called in BestdataModuleEJBClient.java file:
public void doNothingNoArgs() throws oracle.jbo.JboException {
try {
oracle.jbo.common.remote.PiggybackReturn _pbRet = mRemoteAM.doNothingNoArgs(getPiggyback());
processPiggyback(_pbRet.mPiggyback);
if (_pbRet.isReturnStreamValid()) {
return;
catch (oracle.jbo.common.remote.ejb.RemoteJboException ex) {
processRemoteJboException(ex);
catch (java.rmi.RemoteException ex) {
processRemoteJboException(ex);
throw new oracle.jbo.JboException("Marshall error");
However, I cannot call getPiggyback() function! It is a protected method, it is available to the class BestdataModuleEJBClient which extends EJBApplicationModuleImpl, but it is unavailable to my class BestClients which extends Object and is intended to extend oracle.jdeveloper.html.WebBeanImpl!
It seems to me that I mustnt use RemoteBestdataModule interface directly. Instead of that I must use the public class BestdataModuleEJBClient that extends EJBApplicationModuleImpl and implements BestdataModule interface. It contains all methods required without additional arguments (see just above). However, how must I create an object of BestdataModuleEJBClient class? That is a puzzle. Besides my custom methods the class has only two methods:
protected bestdata.common.ejb.RemoteBestdataModule mRemoteAM;
/*This is the default constructor (do not remove)*/
public BestdataModuleEJBClient(RemoteApplicationModule remoteAM) {
super(remoteAM);
mRemoteAM = (bestdata.common.ejb.RemoteBestdataModule)remoteAM;
public bestdata.common.ejb.RemoteBestdataModule getRemoteBestdataModule() {
return mRemoteAM;
It looks like the remote application module must already exist! In despair I tried to put down something of the kind at the client side:
RemoteBestdataModule remoteInterface = homeInterface.create();
BestdataModuleEJBClient dm = new BestdataModuleEJBClient(remoteInterface);
dm.doNothingNoArgs();
Of course, it results in an error.
System Output: null
System Error: java.lang.NullPointerException
System Error: oracle.jbo.common.PiggybackOutput oracle.jbo.client.remote.ApplicationModuleImpl.getPiggyForRemovedObjects(oracle.jbo.common.PiggybackOutput) (ApplicationModuleImpl.java:3017)
System Error: byte[] oracle.jbo.client.remote.ApplicationModuleImpl.getPiggyfront(boolea
System Error: n) (ApplicationModuleImpl.java:3059)
System Error: byte[] oracle.jbo.client.remote.ApplicationModuleImpl.getPiggyback() (ApplicationModuleImpl.java:3195)
System Error: void bestdata.client.ejb.BestdataModuleEJBClient.doNothingNoArgs() (BestdataModuleEJBClient.java:33)
System Error: void bes
System Error: tclients.BestClients.main(java.lang.String[]) (BestClients.java:76)
I have studied a lot of documents in vain. I have found only various senseless discourses:
"Use the Application Module Wizard to make the Application Module remotable and export the method. This will generate an interface for HrAppmodule (HrAppmodule.java in the Common package) which contains the signature for the exported method promoteAllEmps(). Then, deploy the Application Module. Once the Application Module has been deployed, you can use the promoteAllEmps() method in your client-side programs. Calls to the promoteAllEmps() method in client-side programs will result in calls to the promote() method in the application tier."
However, I have failed to find a single line of code explaining how it should be called.
Can anybody help me?
Best regards,
Svyatoslav Konovaltsev,
[email protected]
null

Dear Steven,
1. Thank you very much. It seems to me that the problem is solved.
2. "I logged into Metalink but it wants me to put in both a tar number and a country name to see your issue." It was the United Kingdom, neither the US nor Russia if you mean my issue.
I reproduce the text to be written by everyone who encounters the same problem:
package bestclients;
import java.util.Hashtable;
import javax.naming.*;
import oracle.jbo.*;
public class BestdataHelper {
public static ApplicationModule createEJB()
throws ApplicationModuleCreateException {
ApplicationModule applicationModule = null;
try {
Hashtable environment = new Hashtable(8);
environment.put(Context.INITIAL_CONTEXT_FACTORY, JboContext.JBO_CONTEXT_FACTORY);
environment.put(JboContext.DEPLOY_PLATFORM, JboContext.PLATFORM_EJB);
environment.put(Context.SECURITY_PRINCIPAL, "TESTER");
environment.put(Context.SECURITY_CREDENTIALS, "TESTER");
environment.put(JboContext.HOST_NAME, "localhost");
environment.put(JboContext.CONNECTION_PORT, new Integer("2481"));
environment.put(JboContext.ORACLE_SID, "ORCL");
environment.put(JboContext.APPLICATION_PATH, "/test/TESTER/ejb");
Context ic = new InitialContext(environment);
ApplicationModuleHome home = (ApplicationModuleHome)ic.lookup("bestdata.BestdataModule");
applicationModule = home.create();
applicationModule.getTransaction().connect("jdbc:oracle:kprb:@");
applicationModule.setSyncMode(ApplicationModule.SYNC_IMMEDIATE);
catch (NamingException namingException) {
throw new ApplicationModuleCreateException(namingException);
return applicationModule;
package bestclients;
import bestdata.common.*;
import certificate.*;
public class BestClients extends Object {
public static void main(String[] args) {
BestdataModule bestdataModule = (BestdataModule)BestdataHelper.createEJB();
Certificate aCertificate = new Certificate("TESTER", "TESTER");
//calling a custom method!!
bestdataModule.passCertificate(aCertificate);
Thank you very much,
Best regards,
Svyatoslav Konovaltsev.
[email protected]
null

Multiple inheritance in remote interfaces for EJB 3.0 session beans on Webl

Hi All,
We started migration from EJB 2.1(WLS 8.1) to EJB 3.0(WLS 10.3.2) and identified few serious problems. One of them is related with multiple business interfaces inheritance. I wrote simple example that presents point of the problem.
we have session bean AImpl:
+@Stateless(name="A")+
+@Remote({A.class})+
+@TransactionAttribute(TransactionAttributeType.REQUIRED)+
+public class AImpl implements A {+
+@Override+
+public void writeA() {+
System.out.println("A");
+}+
+@Override+
+public void writeB() {+
System.out.println("B");
+}+
+@Override+
+public void writeC() {+
System.out.println("C");
+}+
+}+
with remote interface A:
+@Remote+
+@JNDIName(A.JNDI_NAME)+
+public interface A extends B, C {+
public static String JNDI_NAME = "A_JNDI_NAME";
void writeA();
+}+
As you can see A extends B, and C. Definition of both interfaces is very simple:
+public interface B {+
void writeB();
+}+
+public interface C {+
void writeC();
+}+
Everything looks nice until we want to invoke some method on AImpl bean. For above implementation code:
A a = ctx.lookup(A. JNDI_NAME);
a.writeA();
a.writeB();
a.writeC();
writes down ”A \n B” and throws exception:
caused by: java.lang.NoSuchMethodException: pl.gov.arimr.zszik.bazowe.slowniki.ejb.A_vt0zts_AImpl_1032_WLStub.*writeC()*
at java.lang.Class.getMethod(Class.java:1605)
at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.getTargetMethod(RemoteBusinessIntfProxy.java:165)
at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.invoke(RemoteBusinessIntfProxy.java:57)
so.. in stub generated by WLS there is no method from interface C ! What more interesting after small change in interface A rely on change in interface implementation order from B, C to C, B (+public interface A extends C, B {+) server writes down only A and I have stack like below:
Caused by: java.lang.NoSuchMethodException: pl.gov.arimr.zszik.bazowe.slowniki.ejb.A_vt0zts_AImpl_1032_WLStub.*writeB()*
at java.lang.Class.getMethod(Class.java:1605)
at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.getTargetMethod(RemoteBusinessIntfProxy.java:165)
at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.invoke(RemoteBusinessIntfProxy.java:57)
After this experience I came up with suspicion that Weblogic 10.3 does not support inheritance from multiple interfaces in one “generation”. Instead of that it takes only the first interface from the list.
Does anybody have some experience with such a situation? maybe someone have an idea how to work around this problem?

This is Not Supported in WebLogic that the Remote Interface extends other Interfaces. Because Annotation Processor just looks up inside the implemented interface methods. The actual interface which is Implemented by the Bean Class. So the Methods declared inside the Interface B and Interface C will be ignored and will not be available as part of the generated Stubs. Thats why u are getting NoSuchMethodError.
You can even contact Oracle Support on this...there are 3-4 Cases on it. And the Solution is Work As Designed.
Workaround is : edit your interface A as following
Declare all the Business Methods only in the Remote Interface and not inside it's Super Interfaces.
Example:
@Stateless(name="A")
@Remote({A.class})
@TransactionAttribute(TransactionAttributeType.REQUIRED)
public class AImpl implements A {
@Override
public void writeA() {
System.out.println("A");
@Override
public void writeB() {
System.out.println("B");
@Override
public void writeC() {
System.out.println("C");
@Remote
@JNDIName(A.JNDI_NAME)
public interface A extends B, C {
public static String JNDI_NAME = "A_JNDI_NAME";
void writeA();
void writeB();
void writeC();
Thanks
Jay SenSharma
http://jaysensharma.wordpress.com (WebLogic Wonders Are Here)

Trying to write a basic EJB app w/ JPA and remote client

I'm trying to put together a simple sample app that shows a simple stateless session bean that grabs a Java EE 5 entity from the DB and sends it to the remote caller. I have an entity class called Person that simply has getId() and getName() methods.
I'm trying to get a reference to the session bean (using InitialContext.lookup()), which works. Then I try to call a method on that bean, which works as long as the type being returned is not a Person object. I've had the bean always return "Hello" and it works just fine.
Here's the bean code.
@Stateless(mappedName="RolodexSession")
public class RolodexSessionBean implements RolodexSessionRemote {
    @PersistenceContext
    private EntityManager em;
    /** Creates a new instance of RolodexSessionBean */
    public RolodexSessionBean() {
    public Object getPersonByName(String name)
        Query q = em.createQuery("select object(o) from Person o where o.name=:n");
        q.setParameter("n",name);
        List results = q.getResultList();
        if (results.isEmpty())
            return "emtpy";
        // this would work just fine...
        // return "Some string";
        // but this doesn't work at all
        return results.get(0);
}Here's the client code...
public class Main {
    @EJB
    protected RolodexSessionRemote rolodexSession;
    /** Creates a new instance of Main */
    public Main() throws NamingException {
        Context ctx = new InitialContext();
        rolodexSession = (RolodexSessionRemote)ctx.lookup("RolodexSession");
        Object result = rolodexSession.getPersonByName("John Smith");
        System.out.println(result);
     * @param args the command line arguments
    public static void main(String[] args) throws NamingException {
        Main m = new Main();
}I made sure to put a Person object into my database with the name "John Smith".
The error I keep getting is...
Dec 7, 2006 4:40:29 PM com.sun.corba.ee.impl.encoding.CDRInputStream_1_0 read_value
WARNING: "IOP00810257: (MARSHAL) Could not find class"
org.omg.CORBA.MARSHAL:   vmcid: SUN minor code: 257 completed: Maybe
        at com.sun.corba.ee.impl.logging.ORBUtilSystemException.couldNotFindClass(ORBUtilSystemException.java:8309)
        at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:984)
        at com.sun.corba.ee.impl.encoding.CDRInputStream.read_value(CDRInputStream.java:259)
        at com.sun.corba.ee.impl.io.IIOPInputStream.inputObjectField(IIOPInputStream.java:1987)
        at com.sun.corba.ee.impl.io.IIOPInputStream.inputClassFields(IIOPInputStream.java:2211)
        at com.sun.corba.ee.impl.io.IIOPInputStream.inputObject(IIOPInputStream.java:1219)
        at com.sun.corba.ee.impl.io.IIOPInputStream.simpleReadObject(IIOPInputStream.java:398)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.readValueInternal(ValueHandlerImpl.java:329)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.readValue(ValueHandlerImpl.java:295)
        at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:1005)
        at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:850)
        at com.sun.corba.ee.impl.encoding.CDRInputStream.read_value(CDRInputStream.java:255)
        at com.sun.corba.ee.impl.corba.TCUtility.unmarshalIn(TCUtility.java:269)
        at com.sun.corba.ee.impl.corba.AnyImpl.read_value(AnyImpl.java:558)
        at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_any(CDRInputStream_1_0.java:710)
        at com.sun.corba.ee.impl.encoding.CDRInputStream.read_any(CDRInputStream.java:225)
        at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.readAny(Util.java:449)
        at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl$10.read(DynamicMethodMarshallerImpl.java:251)
        at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl.readResult(DynamicMethodMarshallerImpl.java:424)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.privateInvoke(StubInvocationHandlerImpl.java:162)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:119)
        at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(BCELStubBase.java:197)
        at session.__RolodexSessionRemote_Remote_DynamicStub.getPersonByName(__RolodexSessionRemote_Remote_DynamicStub.java)
        at session._RolodexSessionRemote_Wrapper.getPersonByName(session._RolodexSessionRemote_Wrapper.java)
        at clientapp.Main.<init>(Main.java:33)
        at clientapp.Main.main(Main.java:41)I'm running this on the Sun Java System App Server 9.0.
Any ideas?

I've narrowed down the issue. The Person object that I'm trying to send back has a one-to-many relationship with Address objects. I have this all setup correctly, I think. Here's the code from Person.java that establishes that relationship.
     * Holds value of property addresses.
    @OneToMany(mappedBy = "person")
    private List<Address> addresses;
     * Getter for property addresses.
     * @return Value of property addresses.
    public List<Address> getAddresses() {
        return this.addresses;
     * Setter for property addresses.
     * @param addresses New value of property addresses.
    public void setAddresses(List<Address> addresses) {
        this.addresses = addresses;
    }In Address.java I have the other side of the relationship defined (again, correctly, I think).
IF I COMMENT OUT THIS RELATIONSHIP EVERYTHING WORKS! So, the problem seems to be related to using foreign key associations. Is there something I'm missing here? Perhaps it's related to lazy-loading of foreign keys?

EJB 3.0 Session Bean question

Hi there,
How'd I expose a method of Stateless Session Bean in EJB 3.0? I don't seem to find any annotation for that.
Thanks in advance.
Saeed

If you need to expose method implemented in Session bean, you can invoke the method call from within another method called in Client.
This method has to be defined in the remote interface . The method you are trying to invoke can be defined somewhere else but called in your bean class from within the method definedin the remote interface.

Creating and deploying ejb 3.0 session bean with annotated pojo

I try to create and deploy a EJB 3.0 stateless session bean (and associated webservice) with the following steps:
1) Create Interface "Repository"
package de.xxx.config;
import java.rmi.Remote;
import java.rmi.RemoteException;
import javax.jws.WebMethod;
import javax.jws.WebService;
@WebService
public interface Repository extends Remote {
     @WebMethod(operationName = "findCampaignByChannel")
     public String findCampaignByChannel(String channelName) throws RemoteException;
2) create dummy "RepositoryImpl"
package de.xxx.config;
import java.rmi.RemoteException;
import javax.ejb.Stateless;
import javax.jws.WebService;
@WebService(endpointInterface="de.xxx.config.Repository")
@Stateless
public class RepositoryImpl implements Repository {
     public String findCampaignByChannel(String channelName) throws RemoteException {
          return null;
3) The two class files are packaged into a jar without any further descriptors
4) The jar is deployed with admin_client into the oc4j instance using the commands:
-deploy -file <jarfile> -deploymentName <name>
Result:
An ear was constructed and started but no session bean or webservice is found (using the console). But according to to the docs a jar file without a ejb-jar.xml should be recognized as a EJB 3.0 ejb-jar file and the necessary steps to create session bean and expose webservice should be done automatically.
My question:
Which step do i miss here ?
Tools used:
Eclipse 3.2 for the jar file
SoaSuite 10.1.3.1 for oc4j

another strange problem.
i have an APplication server added ( JBOSS ).
when i create deployment profile (EAR ) application server is showed in the ComboBox .
But when i create Java Test Client for some EJB and when i check " Connect Remote Application server" there is 2 comboboxes
J2EE Application
App Server Connection.
first combo is ok there is EJB applicaiton
Secound is empty .. but i Have App Server.
Another think is that when i create EJB 3.0 its BAD to see J2EE app it must be J EE 5 app or just Java EE app

How can i design a EJB application using session Beans?

Hello,
I am designing a Find application using EJB. Here a user is prompted a search page, where he can enter the search criteria's. Then on click of submit, the query is formed at the server side depending on what criteria's were selected. Then a jdbc query is performed and the results are returned back to the user. Here no session is maintained for the users. Can anyone suggest me how to design this application using EJB. Should i use entity beans for this or session beans will suffice? Should the jdbc query be performed in the bean itself or should it be outside in a helper class? Please kindlu suggest me the design for this application...
Regards,
Subbu

Hi,
First of all, I'm unable to figure out why you need to use EJB for this scenario. You can write a helper class to frame and execute the query.
If you really want to use EJB, then I suggest you use a stateless Session Bean with transaction attribute as TX_NOT_SUPPORTED. From the session bean, you can call the helper class. But, by avoiding the session bean, you can eliminate remote calls, thus improving your performance. Also, check if the database & the db driver you are using supports sql caching.
Regards,
Raj.

How to call a EJB method from Session bean method

Hi all,
I'm new to J2EE programming. I have a simple doubt .
I have already created a lookup method for EJB bean in Session bean .
My question is how to call a method of an ENTITY bean (say insertRow) from SESSION bean method(Say invoke_insertRow) .
Please provide me an example code .
Thanks in advance.

InitialContext ctx = new InitialContext();
     GeneralEditor editor = (GeneralEditor) ctx
                    .lookup("GeneralEditorBean/remote");
          GeneralService service = (GeneralService) ctx
                    .lookup("GeneralServiceBean/remote");
          LanMu lm = new LanMu();
          lm.setName("shdfkhsad");
          editor.add(lm);

Combining single transaction between session bean & application client

Hi All,
The following transaction exception was encountered when trying to combine a EmployeeSessionBean.create(Employee) method in an application client:
Application Client output
SEVERE: null
javax.transaction.SystemException: org.omg.CORBA.UNKNOWN: ----------BEGIN server-side stack trace----------
org.omg.CORBA.UNKNOWN: WARNING: IOP00010002: Unknown user exception thrown by the server - exception: org.eclipse.persistence.exceptions.DatabaseException; message:
Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: java.lang.IllegalStateException: cannot add non-XA Resource to global JTS transaction.
Error Code: 0
Call: INSERT INTO EmployeeDB.Project (ID, NAME) VALUES (?, ?)
bind => [2 parameters bound]
Query: InsertObjectQuery(domain.Project@19d2d53) vmcid: OMG minor code: 2 completed: Maybe
at com.sun.gjc.spi.base.DataSource.getConnection(DataSource.java:117)
at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:126)
----------END server-side stack trace---------- vmcid: OMG minor code: 2 completed: Maybe
at com.sun.jts.jta.TransactionManagerImpl.commit(TransactionManagerImpl.java:332)
at com.sun.enterprise.transaction.jts.JavaEETransactionManagerJTSDelegate.commitDistributedTransaction(JavaEETransactionManagerJTSDelegate.java:184)
at com.sun.enterprise.transaction.JavaEETransactionManagerSimplified.commit(JavaEETransactionManagerSimplified.java:873)
at com.sun.enterprise.transaction.UserTransactionImpl.commit(UserTransactionImpl.java:208)
at applicationClient(*applicationClient.java:229*)
GF 3.1 Server log
WARNING: A system exception occurred during an invocation on EJB EmployeeSessionBean method public void ejb.EmployeeSessionBean.create(Employee) javax.ejb.EJBException
Caused by: javax.persistence.TransactionRequiredException
at ejb.EmployeeSessionBean.create(*EmployeeSessionBean.java:27*)
SEVERE: RAR5027:Unexpected exception in resource pooling
java.lang.IllegalStateException: cannot add non-XA Resource to global JTS transaction.
WARNING: RAR7132: Unable to enlist the resource in transaction. Returned resource to pool. Pool name: [ mysqlPool ]
WARNING: RAR5117 : Failed to obtain/create connection from connection pool [ mysqlPool ]. Reason : com.sun.appserv.connectors.internal.api.PoolingException: java.lang.IllegalStateException: cannot add non-XA Resource to global JTS transaction.
WARNING: RAR5114 : Error allocating connection : [Error in allocating a connection. Cause: java.lang.IllegalStateException: cannot add non-XA Resource to global JTS transaction.]
WARNING: Local Exception Stack:
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.2.0.v20110202-r8913): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: java.lang.IllegalStateException: cannot add non-XA Resource to global JTS transaction.
Below is the code snippet of EmployeeSessionBean & client.applicationClient:
@Stateless
//@TransactionManagement(TransactionManagementType.BEAN)
public class EmployeeSessionBean implements EmployeeService {
    @PersistenceContext(unitName="EmployeeDB-PU")
    private EntityManager manager;
    public void create(Employee employee) {
        manager.persist(employee); // line 27
import javax.transaction.UserTransaction;
public class applicationClient {
@Resource UserTransaction tx;
@EJB private static EmployeeService bean;
try {
    tx.begin();
    Employee employee = new Employee()
        bean.create(employee);
} finally {
       try {
             tx.commit(); // line 229
}How to relinguish transaction on EmployeeSessionBean so that all transaction could take place in applicationClient side only?
I am trying to apply examples in Pro JPA 2 to a Java EE 6 ManyToMany application.
Your assistance would be much appreciated.
Thanks,
Jack

Hi r035198x,
Thank you for some solid advice and would rather JPA take care of all the special cases such as keeping the records unique.
Below are the changes made as suggested in ( 1 ), ( 2 ), ( 3 ):
@Entity
@IdClass(EmployeePK.class)
@Table(name="EMPLOYEE", catalog="EmployeeDB", schema="")
public class Employee implements Serializable {
    @Id
    @Column(name="FIRSTNAME")
    private String firstName;
    @Id
    @Column(name="SURNAME")
    private String surName;
    @Id
    @Column(name="DOB")
    @Temporal(TemporalType.DATE)
    private Date dob;
    @ManyToMany(cascade={CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch=FetchType.EAGER)
    @JoinTable(name="EMPLOYEE_PROJECT", catalog="EmployeeDB", schema="",
           joinColumns={@JoinColumn(name="FIRSTNAME_ID", referencedColumnName="FIRSTNAME"),
                        @JoinColumn(name="SURNAME_ID", referencedColumnName="SURNAME"),
                        @JoinColumn(name="DOB", referencedColumnName="DOB")},
           inverseJoinColumns={@JoinColumn(name="PROJECT_ID")})
        private Set<Project> projects = new HashSet<Project>();
@Entity
@Table(name="PROJECT", catalog="EmployeeDB", schema="")
public class Project implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name="ID")
    private int id;
    @ManyToMany(mappedBy="projects", cascade={CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch=FetchType.EAGER)
        @JoinTable(name="EMPLOYEE_PROJECT", catalog="EmployeeDB", schema="",
           joinColumns={@JoinColumn(name="PROJECT_ID", referencedColumnName="PROJECT_ID")},
           inverseJoinColumns={@JoinColumn(name="FIRSTNAME_ID", referencedColumnName="FIRSTNAME"),
                        @JoinColumn(name="SURNAME_ID", referencedColumnName="SURNAME"),
                        @JoinColumn(name="DOB_ID", referencedColumnName="DOB")})
    private Set<Employee> employees = new HashSet<Employee>();
@Stateless
public class EmployeeSessionBean implements EmployeeService {
    @PersistenceContext(unitName="EmployeeDB-PU") private EntityManager manager;
    public void create(Employee employee)
        manager.persist(employee);
public class applicationClient {
    @EJB
    private static EmployeeService bean;
    public static void main(String[] args) {
    Employee employee = new Employee()
    bean.create(employee);   // line 209
} I have diverged slightly from using simple primary key (EMPLOYEE_ID) to composite key class (FIRSTNAME, SURNAME, DOB) to resemble the actual application.
Also gone back to using non - XADatasources since I am depending on JTA to do all the hardwork on the server side.
Unfortunately, we have hit a snag once again with the following exception still:
Application Client Output
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.glassfish.appclient.client.acc.AppClientContainer.launch(AppClientContainer.java:432)
at org.glassfish.appclient.client.AppClientFacade.launch(AppClientFacade.java:182)
at org.glassfish.appclient.client.AppClientGroupFacade.main(AppClientGroupFacade.java:65)
Caused by: javax.ejb.EJBException: java.rmi.MarshalException: CORBA MARSHAL 1330446347 Maybe; nested exception is:
org.omg.CORBA.MARSHAL: ----------BEGIN server-side stack trace----------
org.omg.CORBA.MARSHAL: WARNING: IOP00810011: Exception from readValue on ValueHandler in CDRInputStream vmcid: OMG minor code: 11 completed: Maybe
Caused by: java.io.StreamCorruptedException: WARNING: ORBIO00013: Stream corrupted
----------END server-side stack trace---------- vmcid: OMG minor code: 11 completed: Maybe
at ejb._EmployeeService_Wrapper.create(ejb/_EmployeeService_Wrapper.java)
at applicationClient(applicationClient.java:209)
GF 3.1 Server log
WARNING: IOP00810011: Exception from readValue on ValueHandler in CDRInputStream
org.omg.CORBA.MARSHAL: WARNING: IOP00810011: Exception from readValue on ValueHandler in CDRInputStream vmcid: OMG minor code: 11 completed: Maybe
Caused by: java.lang.NullPointerException
WARNING: ORBIO00013: Stream corrupted
java.io.StreamCorruptedException: WARNING: ORBIO00013: Stream corrupted
Your valuable input would be very appreciated.
Thanks,
Jack

EJB 3.0 Session Bean Remote Client

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