google/cayley — pull request #186 by panamafrancis (2014-12-01 22:14:56+00:00)
Title: Implementation of the PrimaryKey type

This pull request partially fulfills https://github.com/google/cayley/issues/185

I've implemented a PrimaryKey type that refactors the IDs used for Deltas and the associated quadstore horizons.

I need to abstract this so UUID based primary keys can be implemented for the App Engine datastore backend.