A DataAccessProvider that is used to fetch attributes from a data source based on a query with the "subject"
as input. An AttributeDataAccessProvider can be thought of as an "enricher" of attributes, as it is most
often used to get extra attributes for a given subject.
A DataAccessProvider that is used to fetch attributes from a data source based on a query with the "subject" as input. An AttributeDataAccessProvider can be thought of as an "enricher" of attributes, as it is most often used to get extra attributes for a given subject.