src/main/java/com/authlete/jaxrs/AuthorizationRequestHandler.java
private void noInteractionCheckAuthentication(AuthorizationResponse response)
    {
        // If the current user has already been authenticated.
        if (mSpi.isUserAuthenticated())
        {
            // OK.
            return;
        }

        // A user must have logged in.
        throw getApiCaller().authorizationFail(response.getTicket(), Reason.NOT_LOGGED_IN);
    }
private void noInteractionCheckAuthentication(AuthorizationResponse response)
    {
        // If the current user has already been authenticated.
        if (mSpi.isUserAuthenticated())
        {
            // OK.
            return;
        }

        // A user must have logged in.
        throw getApiCaller().authorizationFail(response.getTicket(), Reason.NOT_LOGGED_IN);
    }
Check whether an end-user has already logged in or not.