Org.eclipse.higgins.as

{{#eclipseproject:technology.higgins|eclipse_custom_style.css}} The IdAS XDI Engine is a web application that exposes a Higgins Context as an XDI endpoint, which can receive and process XDI messages.

It maps incoming XDI messages to IdAS operations, which are applied to the Context that is being exposed. This mapping is described in further detail at IdAS XDI Mapping.

Version

The IdAS XDI Engine is being developed as part of Higgins 1.1

Implementation

The IdAS XDI Engine is implemented using the XDI4j general-purpose XDI library. It is an XDI4j "Messaging Target", i.e. an implementation of the MessagingTarget interface. In XDI4j, a Messaging Target is a class that can process XDI messages and produce result XDI documents.

Example Uses

Get everything about an Entity in an LDAP directory.

=sender
	$get
		/
			=(uid=hummel,ou=identities,dc=higgins,dc=eclipse,dc=org)

Get only a single Attribute of that Entity.

=sender
	$get
		/
			=(uid=hummel,ou=identities,dc=higgins,dc=eclipse,dc=org)
				+(http://www.eclipse.org/higgins/ontologies/2006/higgins/ldap#attr_cn)

Links

• The XDI RDF Model is the current OASIS TC proposal for an RDF-based data model and addressing format for XDI. This document includes the proposed XDI RDF schema and a number of examples of XDI documents. (Note that it does not yet include the proposed XDI messaging format, which uses XDI documents as message envelopes for other XDI documents.)
• OASIS XDI TC Wiki
• Wikipedia page on XDI