injecting Session bean from another session bean in JBoss 7.1 - ejb-3.1

Question

I am not able to inject a SLSB in another SLSB. Actually created 3 projects
1) created a EJB project with an MDB
2) created a EJB project with a stateless session bean for posting the message
3) created a EJB project with a stateless session bean for injecting the above session bean
But while injecting I am not able to inject the EJB it is returning null
the code is as below
1) MDB:
#MessageDriven(
activationConfig = {
#ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue"),
#ActivationConfigProperty(propertyName = "destination", propertyValue = "activemq/queue/TestQueue"),
#ActivationConfigProperty(propertyName="acknowledgeMode", propertyValue="Auto-acknowledge")
})
#ResourceAdapter("activemq-ra.rar")
public class ConsumerMDB implements MessageListener {
public void onMessage(Message message) {
try {
System.out.println("Queue: Received a TextMessage at " + new Date());
TextMessage msg = (TextMessage) message;
System.out.println("Message is : " + msg.getText());
} catch (JMSException e) {
e.printStackTrace();
}
}
}
2) Session Bean 1
package com.springboard.session;
import javax.annotation.Resource;
import javax.ejb.LocalBean;
import javax.ejb.Stateless;
import javax.jms.JMSException;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSender;
import javax.jms.QueueSession;
import javax.jms.TextMessage;
#Stateless
#LocalBean
public class ProducerSession implements ProducerSessionLocal {
#Resource(mappedName="java:jboss/activemq/QueueConnectionFactory")
public static QueueConnectionFactory factory;
#Resource(mappedName = "java:jboss/activemq/queue/TestQueue")
public static Queue queue;
#Override
public void sendMessage(String msg) {
System.out.println("****************Entering into method********************");
try {
System.out.println(queue.getQueueName());
QueueConnection qConnection = factory.createQueueConnection();
QueueSession qSession = qConnection.createQueueSession(false, QueueSession.AUTO_ACKNOWLEDGE);
TextMessage message = qSession.createTextMessage();
message.setText(msg);
QueueSender qSender = qSession.createSender(queue);
qSender.send(message);
qSender.close();
qSession.close();
qConnection.close();
} catch (JMSException e) {
e.printStackTrace();
}
System.out.println("****************Exiting into method********************");
}
}
and the interface is
package com.springboard.session;
import javax.ejb.Local;
#Local
public interface ProducerSessionLocal {
public void sendMessage(String msg);
}
3) Second session bean to inject the first session
#Stateless
public class TestProducerLocalBean implements TestProducerLocalBeanLocal {
#EJB(mappedName = "java:global/ProducerSessionActiveMQ/ProducerSession!com.springboard.session.ProducerSessionLocal")
public ProducerSessionLocal producer;
public TestProducerLocalBean() {
System.out.println("*************Testing Producer****************");
if(producer!=null){
producer.sendMessage("This Message is from SessionBean to Session Bean to MDB");
}
else{
System.out.println("EJB is null");
}
System.out.println("**********End************************");
}
#Override
public void messageSend(String msg) {
// TODO Auto-generated method stub
}
and for testing purpose used a class
import javax.ejb.EJB;
import com.springboard.session.test.TestProducerLocalBean;
public class testEJB {
#EJB
public static TestProducerLocalBean local =new TestProducerLocalBean();
public static void main(String[] args) {
}
}
At producer EJB always retuns null. With using servlet to inject ProducerSession i am able to do it. but injecting with another EJB i not able to get it.
Could any one please help me out what i am missing
Thanks in advance

Answer 1

It's incorrect to use initialization ... = new Xyz() when using injection because initialization of those fields is the responsibility of the container. You probably attempted that because you noticed that the field was null, and that's because injection (including #EJB) is not supported in the main class unless you use an application client container.