const XMLCh* r = e ? e->getAttributeNS(nullptr,regex) : nullptr;
if (!r || !*r)
throw ConfigurationException("AttributeIssuerRegex MatchFunctor requires non-empty regex attribute.");
const XMLCh* r = e ? e->getAttributeNS(nullptr,regex) : nullptr;
if (!r || !*r)
throw ConfigurationException("AttributeIssuerRegex MatchFunctor requires non-empty regex attribute.");