Service Locator pattern to recognise stale home reference

[glyn_walters]

Hi

Just wondering if it's worth pursuing some refelection in a Service Locator to detect stale home references. Or will this code produce to much overhead on each cache lookup?

 if (cache.containsKey(jndiHomeName)) {
 home = (EJBHome) cache.get(jndiHomeName);
 // check the validity of the home reference
 try {
 Method method = home.getClass().getMethod("create", new Class[0]);
 method.invoke(home, new Object[0]);
 }
 catch (Exception ex) {
 // this failed so home reference is invalid; set the home reference to null
 home = null;
 }
 }

Thanks for any advice.