关于jdon DCI RoleAssigner的问题

public Object assign(Object datamodel, Object role) {
		Class[] inters = role.getClass().getInterfaces();
		if (inters == null || inters.length == 0) {
			Debug.logError(
					"[JdonFramework] role:" + role.getClass() + " should implements a interface when be assigned to data:" + datamodel.getClass(),
					module);
			return null;
		}

		if (datamodel.getClass().isAnnotationPresent(Model.class))
			assignDomainEvents(datamodel);

		if (role.getClass().isAnnotationPresent(Introduce.class)) {
			role = modelAdvisor.createProxy(role);
		}

		return role;
	}