The SubjectDerivedAttribute 3.3 attribute definition exposes attributes values derived from the Subject(s) produced by the authentication flow(s) used to authenticate the subject of the profile request. A configuration shortcut allows for the values from any IdPAttribute objects contained inside IdPAttributePrincipal objects to be pulled out, which is an effective way to tunnel attribute data from outside the IdP provided by the External authentication flow.
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This xsi:type is defined by the urn:mace:shibboleth:2.0:resolver namespace 3.3, the schema for which is located at http://shibboleth.net/schema/idp/shibboleth-attribute-resolver.xsd.Prior to V3.3 supplied plugins were defined by a schema type (xsi:type) in the urn:mace:shibboleth:2.0:resolver:ad namespace, whose schema is located at http://shibboleth.net/schema/idp/shibboleth-attribute-resolver-ad.xsd. This remains supported, but every element or type in the urn:mace:shibboleth:2.0:resolver:ad namespace has an equivalently named (but not necessarily identical) version in the urn:mace:shibboleth:2.0:resolver namespace. The use of the urn:mace:shibboleth:2.0:resolver namespace also allows a relaxation of the ordering requirements of child elements and so a more natural order can be applied.
Attributes
Any of the common attributes can be specified. Note that this attribute definition does not require a sourceAttributeID attribute since the information is not resolved from a dependent attribute. If one is supplied, it is ignored.
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