Service Locator Problem
We have just started with the New Project & just discussing Architecture.
We want to use Service LOCATOR Pattern ..but with some modifications. We want BUSINESS DELEGATE to keep the track of all teh HOME OBJECTS ..& before actually going to SERVICE LOCATOR for teh Request , it sud look up teh Home Object in itself.
SERVICE LOCATOR pattern is working fine , but help me ..how to save to Home Object Refernce .
Thanks in Advance . Help Appreciated.
Looks like you need Caching of Home objects ...
here is a simple code to help you ...(if thats what you want .)
Have a class level SynchronizedMap :
ejbHomes = Collections.synchronizedMap(new HashMap());
and in the look-up method...first search for the home objects in the Map . If it is available then get it ... else create a new one and store it in the map .
EJBHome anEJBHome = (EJBHome) ejbHomes.get(homeClass);
if(anEJBHome == null)
{
anEJBHome = (EJBHome) javax.rmi.PortableRemoteObject.narrow (
ctx.lookup (homeClass.getName()), homeClass);
ejbHomes.put(homeClass, anEJBHome);
}
return anEJBHome;
Hope that helps .
Mohan
