How to : Different validation check for different mappings but same filter

[saurabh narayan singh]

I have multiple mappings in the restlet which are supposed to pass through the 
same filter and authenticator, but for the different mappings i have to use 
validationPresence(attribute) for different attributes, refer the code below 
for better understanding of the question : 

    @Override
    public synchronized Restlet createInboundRoot(){
        Authenticator auth = new myAuthenticator();
        Validator val = new myValidator(getContext());
        Filter fil1 = new myFilter();
        Router r = new Router();
        r.attach("/hellowrld",HelloWorldResource.class);
        r.attach("/hello",HelloWorldResource1.class);
        fil1.setNext(auth);
        auth.setNext(val);
        val.setNext(r);
        val.validatePresence("Name");
        return fil1;
    }

but here both mappings will pass through validatePresence("Name"), what i want 
to achieve is pass "/hellowrld" thru one validator and "/hello" thru other one 
. What can i do for that ? 
Any help will be appreciated

Thanks

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