How to inject a ProfileRequestContext into a Predicate ?

[Cantor, Scott]

> Is it possible to inject a ProfileRequestContext into a Predicate ? I’m not
> seeing it.
> 
> For IDP-970, an IsAttributeRequiredPredicate which operates on an
> IdPAttribute (i.e. public class IsAttributeRequiredPredicate implements
> Predicate<IdPAttribute>) seems straightforward, but it would need access to
> the PRC.

Not generically. The back door I've been using is Brent + Marvin. Brent made it possible to statelessly inject HttpServletRequest and Marvin added the listener that gets you the PRC from the attribute.

From AbstractProfileConfiguration:

    @Nullable protected ProfileRequestContext getProfileRequestContext() {
        if (servletRequest != null) {
            final Object object = servletRequest.getAttribute(ProfileRequestContext.BINDING_KEY);
            if (object instanceof ProfileRequestContext) {
                return (ProfileRequestContext) object;
            }
            log.warn("ProfileConfiguration {}: No ProfileRequestContext in request", getId());
        } else {
            log.warn("ProfileConfiguration {}: ServletRequest was null", getId());
        }
        return null;
    }

-- Scott