package edu.stanford.peer.rbtm.engine;

import edu.stanford.peer.rbtm.credential.*;
import edu.stanford.peer.rbtm.util.*;

/**
 * A simple predicate to fail only on role expressions which are roles.
 */
public class Simp implements Predicate {
    
    /** apply the predicate to determine if a role expression isn't a role */
    public boolean test(EntityExpression obj) {
	if(obj instanceof Role) {
	    return false;
	}
	return true;
    }

}