Hydra on top of Fedora 4

Justin Coyne

Data Curation Experts

Hydra Connect 2 — September 2014

What will it take to get
Hydra on Fedora 4?

Code Contributors

Testing

Documenting

$$$

Thanks for your help!

Fedora 4 contributors

• UCSD
• Stanford
• UVA
• Columbia
• Everyone who contributes to Duraspace

ActiveFedora 8 contributors

• Stanford
• PSU

How are we getting here?

Change the data model

How are we getting here?

Change the data model

How are we getting here?

Removed legacy features

• Disseminators
• RELS-EXT datastream

How are we getting here?

Do it the Fedora 4 way

• Datastreams (size, mime-type, original file name)
• Fixity checking
• Versions
• Walking the tree

We're Alpha!

• hydra-jetty fedora-4/master branch
• active-fedora 8 fedora-4 branch
• hydra-head 8 fedora-4 branch
• hydra-derivatives fedora-4 branch
• hydra-collections fedora-4 branch
• sufia fedora-4 branch

What is left to do

• RDF schema for rightsMetadata
• load_instance_from_solr (pull request pending)
• Upgrade to ActiveTriples 0.3.0 (in progress)
• LDP spec compatability (in progress)
• Optimize active-fedora's interaction with Fedora
• Use E-Tags to detect concurrent modification
• A migration script

What did we do to get here?

Cheers! Sláinte! Prost!