EJBHomeLocatorFactory

[Joy Mookerji]

I have created a HomeLocator factory using EJBHomeFactory and ServiceLocator pattern.
Just wanted to share for opinion
Pls comment on the design

    
package com.joy.books.server.servicelocator;
import java.util.*;
 
import com.joy.books.server.businesslogic.common.HelloHome;
import com.joy.books.util.JndiContext;
 
import javax.ejb.EJBHome;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;
 

public class EJBHomeLocatorFactory {

private static Map jndiCacheMap = new HashMap();
private static EJBHomeLocatorFactory ejbHomeLocator = new EJBHomeLocatorFactory();

private EJBHomeLocatorFactory() {

}

private static void loadJndiCache(String homeName,EJBHome home) {



jndiCacheMap.put(homeName, home);



}



public static EJBHome findHome(String homeName,InitialContext ctx) {
EJBHome localHome = (EJBHome)jndiCacheMap.get(homeName);
System.out.println("findHome()");

if(localHome == null) {
System.out.println("1()");
try {
Object obj = ctx.lookup(homeName);
localHome = (EJBHome)PortableRemoteObject.narrow(obj,EJBHome.class);
loadJndiCache(homeName,localHome);
System.out.println(localHome);

} catch (NamingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} 
}

return localHome;
}

public static EJBHomeLocatorFactory instance() {
return ejbHomeLocator;
}





 
}
 

 

The client has to pass the HomeName and InitialContext

It uses a cache so for subsequent call it doesnt do a look up

[karthikeyan Chockalingam]

why do you need instance() and hence ejbHomeLocator ?? (As there are no non static methods)

[Joy Mookerji]

You are correct we can get read of the instance method and the ejbHomeLocator