Lazy loading data from RDF

Science Collaboration Framework (SCF) has a "node proxy" module that allows Drupal to query a SPARQL endpoint and only loads the data when someone looks for it-- at this point it creates a node.

The system isn't bad and may be a good base lacking any established best practices in Drupal for lazy loading of nodes from outside data sources.

See also:

(Drupal 6 nodereference autocomplete for nodes you don't have... yet)
http://www.darrenmothersele.com/drupal-blog/node-reference-create-drupal-6-cck-node-reference-field

(Drupal 5) (referenced in this discussion; I also attended the Boston session)
http://ken.therickards.com/2007/03/24/oscms-xml-mashups-and-drupal-as-platform/
http://ken.therickards.com/2007/09/12/drupalcon-modules/
http://therickards.com/api/DrupalCON

(Drupal 6 and OO design patterns, including Singleton for lazy loading) (slides not up yet)
http://dc2009.drupalcon.org/session/objectifying-drupal-introduction-oop
http://agaricdesign.com/note/drupalcondc-patterns-and-object-orientation-drupal-code

Resolution