Choose EJB to be injected without recompiling

Question

Imagine you have two implementations of a @Local interface

@Local
public interface LocalInterface {
}

@Stateless
public class MyFirstImplementa         


        

Answer 1

You can achieve it using the deployment descriptor - ejb-jar.xml. Something like this (might not be 100% accurate, but I think you've got the point):

 
   
      
         MyClass
         
            ejb/myLocalReferencedBean
            Session
            com.yourpackage.LocalInterface
            MyFirstImplementation
            local
         
      

      
         MyFirstImplementation
         
      
      
         MySecondImplementation
         
      
   

Another way is to use the CDI as described here: Inject @EJB bean based on conditions