How can be a realm has multiple principals in shiro?

Question

There's a method of PrincipalCollection : Collection fromRealm(String realmName) , but how can be one login assign muiltiple Principals to a realm? Thank you

Answer 1

Sure, you could create a realm to log into with certificates, so you could have a cert based principal, but you might have a username principal as well. Or you could have a custom principal that puts both of these attributes in a single object.