Here's an implementation of the Blueprints API for Oracle NoSQL Database.

https://github.com/dwmclary/blueprints-oracle-nosqldb

Blueprints is a collection of interfaces, implementations, ouplementations, and test suites for the property graph data model. Blueprints is analogous to the JDBC, but for graph databases. As such, it provides a common set of interfaces to allow developers to plug-and-play their graph database backend. Moreover, software written atop Blueprints works over all Blueprints-enabled graph databases. Within the TinkerPop software stack, Blueprints serves as the foundational technology for:

• Pipes: A lazy, data flow framework
• Gremlin: A graph traversal language
• Frames: An object-to-graph mapper
• Furnace: A graph algorithms package
• Rexster: A graph server