Grouper Developers Forum

[Tom Zeller <>]

I'm looking for a better way to structure ldappc-ng request/response
handling code. I'd like to avoid casting and would like to include MDC
logging.

I defined an interface (based on the spml toolkit) for
request/response handling :

public interface SpmlProvider {
 public Response execute(Request request);
}

The base implementation for handling common code :

public abstract class BaseSpmlProvider implements SpmlProvider {
 public Response execute (Request request) {
   ... common code
   MDC.put(...);
   Method method = this.getClass().getMethod(methodName, new Class[] {
request.getClass() });
   Response response = (Response) method.invoke(this, new Object[] { request 
});
   ... common code
   MDC.remove(...);
   return response;
 }
}

And ldappc-ng :

public class PSP extends BaseSpmlProvider {
 private CalcResponse execute(CalcRequest request) ...
 private DiffResponse execute(DiffRequest request) ...
...

The result is that casts are required in order to call the common code
and MDC, e.g. :

 CalcResponse response = (CalcResponse) execute((Request) request);

I don't really like those casts, it's not a huge deal, but I'm looking
for a better way.

Suggestions ? Ideas ?

TomZ