Notice: this Wiki will be going read only early in 2024 and edits will no longer be possible. Please see: https://gitlab.eclipse.org/eclipsefdn/helpdesk/-/wikis/Wiki-shutdown-plan for the plan.
UDI
{{#eclipseproject:technology.higgins}}
Version
This page describes the concept of UDI as used in the Context Data Model 1.1.
Description
- UDIs identifiy Contexts, Entities and Attributes
- A UDI is a kind of URI
- ContextId and EntityId Attributes are UDIs.
- Two broad classes of UDIs will be supported in Higgins 1.1:
- OpenID URIs that resolve to an XRDS document (OpenID 2.0 only)
- HTTP URIs or XRIs that resolve to an XRDS document containing a Higgins Service Endpoint. This endpoint holds the necessary metadata to access Higgins Contexts and Entities using a variety of protocols.
- Semantic Web Linked Data HTTP Cool URIs (probably only the '303' redirect variant)
- Some UDIs are global —they can be resolved to an object from anywhere on the internet
- Objects identified with global UDIs can be interconnected together to form a global, distributed object graph called the HGG
- Other UDIs are local — they can only be resolved within a LAN or perhaps on the local machine
- Objects identified by local UDIs cannot be a part of the Global Graph