DPLA Hydra Contributions

Hydra Metadata & PCDM

We were active throughout the initial development of PCDM, both at meetings in Portland and on mailing lists. Tom Johnson is a current PCDM committer.

Mark Matienzo is active in Hydra Metadata Working Groups.

Fedora

We are participating in discussions surrounding specification of a Fedora API.

Recent

• Fedora Versioning API spec draft: http://fedora.info/spec/2016/05/20/resource-versioning

ActiveTriples

Tom Johnson is the primary maintainer of the ActiveTriples project, which provides RDF modeling interfaces for Hydra.

Recent 

• Released 0.10.0, 0.10.1, 0.10.2 
  • Backported performance improvements from 0.11.0 work.
• Related contributions to ldp, hydra-pcdm, & ActiveFedora
• Participating in Hydra Triplestore Interest Group

Upcoming

• 0.11.0 progress. Expecting to release this and 1.0 by mid-September.

RDF.rb

Tom Johnson is a member of the core team for RDF.rb

Recent  

• Added `Transaction#
• 2.1.0 released
  
  • Dropped support for Ruby 2.1

Upcoming  

• Benchmarking
• Improving external repository support
• Faster parsers and main memory data storage
  • Early experiments at https://github.com/no-reply/rust-rdf