Proposal: Containment chain auxiliary resource

In many cases, There exists natural requirement of knowing and or showing containment chain, like in breadcrumbs, etc.

Currently it is not possible, in single request. Though uri semantics can give hint, they are only necessary condition, rather than sufficient to establish containment fact (As we cannot know at which slash storage root starts, and whether given resource is auxiliary).

On file systems, it is possible to show such, as root is known, and no non-contained resources exist there.

Proposal is to have a hierarchy chain resource or a prov-chain resource as auxiliary resource to every resource, whose content is purely server managed.

It will return entire hierarchy chain, (aux chain too?), in single request. It will be inline with linked data principles too to derive hierarchy from links, rather than uri string manipulation. And enables getting better navigation and context about any solid resource.

Issue #399 is a proposal for a server-managed hierarchy-chain or prov-chain auxiliary resource for Solid resources. Start by reviewing the stated URI-semantics and linked-data constraints, then determine the resource shape, whether auxiliary chains are included, and how a single request returns the containment chain. Done requires an agreed specification rather than an implementation.