Active Fedora 9.1.0 released

We’re pleased to announce the release of ActiveFedora 9.1.0 and 9.1.1.  9.1.0 has a number of new features and 9.1.1 was released when we found a small bug just after the release of 9.1.0.

New features:

The has_attributes() method was deprecated and replaced with property(). The property() method previously was used to declare only RDF properties, but now you can use it to declare properties that are delegated to an XML file too. Here’s an example:

class Book < ActiveFedora::Base
contains ‘descMetadata’, class_name: ‘CodexMetadata’
property :title, delegate_to: ‘descMetadata’, multiple: false

Additionally you can declare your indexing hints right in the model on the property, just like you would do for a RDF property:

property :title, delegate_to: ‘descMetadata’, multiple: false do |index| :stored_searchable

This release also contains many bug fixes including:

  • has_and_belongs_to_many associations finding inverse relationships
  • Finding the best model to instantiate when it is inherited
  • preventing models from loading into the wrong class
  • sorting of versions by date (rather than string)
  • many more!

See the full list here:
Thanks, as ever, to those involved!

Posted in News, Software updates

OR2015 News

OR2015 NEWS: Preliminary Program Information Now Available; Remember to Register and Reserve Your Hotel Room

From the OR2015 Program Co-Chairs:

We are pleased to announce that information on accepted paper, panel, and 24×7 sessions at Open Repositories 2015 is now available on the OR2015 conference website:

Open Repositories 2015, taking place in Indianapolis on June 8-11, received an unprecedented number of proposals this year, with 240 proposals submitted across the conference and interest group tracks. This has also been the most selective Open Repositories, and only 38% of conference paper and panels were accepted in the main track. We have accepted 6 panels, 21 24×7’s (including Rants and Raves), 37 papers and 60 posters which will all give an exciting snapshot of work in the open repositories community.

The Program Committee would like to take this opportunity to again thank all of our reviewers who took time to review workshops, papers, panels, 24×7’s and posters. Please stay tuned for more information on the schedule and interest group presentations, which we will post later in April.

** Reminder: Register and reserve your hotel room **

Online registration for OR2015 is currently open, and participants can save $50 by registering by May 8. Special negotiated room rates at the conference hotel are available until May 16. For more information, please visit the conference website:

We look forward to seeing you at OR2015!

Holly Mercer, William Nixon, and Imma Subirats

OR2015 Program Co-Chairs


Jon Dunn, Beth Namachchivaya, Julie Speer, and Sarah Shreeves

OR2015 Conference Organizing Committee

Posted in Events, News

SAVE THE DATE: Hydra Connect 2015 – Monday, September 21st – Thursday, September 24th

Hydra today announced the dates for Hydra Connect 2015:

Hydra Connect 2015
Minneapolis, Minnesota
Monday, September 21 – Thursday, September 24, 2015

Registration and lodging details will be available in early June 2015.

The four day event will be structured as follows:

  • Mon 9/21        – Workshops and leader facilitated training sessions
  • Tue 9/22          – Main Plenary Session
  • Wed 9/23        – Morning Plenary Session, Afternoon Un-conference breakout sessions
  • Thu 9/24  – All day Un-conference breakouts and workgroup sessions

We are also finalizing details for a poster session within the program and a conference dinner to be held on the one of the main conference evenings.

Please mark your calendars and plan on joining us this September!

Posted in Events, News

DPLA joins the Hydra Partners

We are delighted to announce that the Digital Public Library of America (DPLA) has become the latest formal Hydra Partner.  In their Letter of Intent Mark Matienzo, DPLA’s Director of Technology, writes of their “upcoming major Hydra project, generously funded by the IMLS, and in partnership with Stanford University and Duraspace, [which] focuses on developing an improved set of tools for content management, publishing, and aggregation for the network of DPLA Hubs. This, and other projects, will allow us to make contributions to other core components of the Hydra stack, including but not limited to Blacklight, ActiveTriples, and support for protocols like IIIF and ResourceSync. We are also interested in continuing to contribute our metadata expertise to the Hydra community to ensure interoperability across our communities.”

A warm welcome into the Partners for all our friends at the DPLA!

Posted in Events, News

IMLS funds collaborative development of “Hydra-in-a-Box”

The IMLS, the US Institute for Museum and Library Services, has announced that it will be funding a $2M proposal to build a turnkey and cloud-ready Hydra solution over the next 2.5 years. DPLA, Stanford & DuraSpace submitted the joint proposal; alignment with the Hydra community, and distributed input on the design, specification and development is structurally built into the grant.

The text of the announcement reads:

“The Digital Public Library of America (DPLA), Stanford University, and DuraSpace will foster a greatly expanded network of open-access, content-hosting “hubs” that will enable discovery and interoperability, as well as the reuse of digital resources by people from this country and around the world. At the core of this transformative network are advanced digital repositories that not only empower local institutions with new asset management capabilities, but also connect their data and collections. Currently, DPLA’s hubs, libraries, archives, and museums more broadly use aging, legacy software that was never intended or designed for use in an interconnected way, or for contemporary web needs. The three partners will engage in a major development of the community-driven open source Hydra project to provide these hubs with a new all-in-one solution, which will also allow countless other institutions to easily join the national digital platform.”

This work provides a wonderful chance to accelerate the convergence of the Hydra community on robust, broadly useful, and common codebase. It also looks likely to rapidly expand the Hydra user base not only in the US but worldwide.  Our congratulations to all concerned!

Posted in News

Hydra 8.0.0 released

Version 8.0.0 of the Hydra gem has been released!

To use hydra 8.0.0 add the following line to your Gemfile:

gem ‘hydra’, ‘8.0.0’

Then bundle install.  To test things out try the Dive into Hydra tutorial archived in the /doc directory inside the gem which is also on the github wiki:

This release is the first in the line of 8.x releases which are the last supporting Fedora 3.  Hydra 9.0.0 which supports Fedora 4 was previously released.

hydra-head v8.1.0
active-fedora v8.0.1
blacklight v5.10.0
rubydora v1.8.1
om v3.1.0
solrizer v3.3.0
jettywrapper v1.8.3

For full details, please see the individual dependency release notes.  Many thanks to all involved!

Posted in News, Software updates

Sufia 6.0.0 released

We are delighted to announce that Sufia 6.0.0 has been released. It’s been quite an undertaking:

* over 451 commits
* 402 files changed
* 17 contributors from 6 institutions, across the U.S.A and Canada

Some of the new features include:

* Fedora 4 support
* Some optimizations for large files including using ActiveFedora’s streaming API
* New metadata editing forms (inspired by Worthwhile and Curate)
* Store old featured researchers in database
* Support for the latest Hydra components, Blacklight, Rails, and Ruby versions
* Easier overriding of Sufia’s controllers
* Dozens and dozens of bugs squashed, and lots of UI/UX tweaks
* Lots of work on the README

You can read all about it in the release notes, including instructions for upgrading:

We’ve also created a sample application that outlines the steps of upgrading to version 6 and migrating the data from Fedora 3 to Fedora 4:

Penn State has tested this code against their Scholarsphere application where they will be using it to launch their new Fedora 4-based version and migrate its data in April. You will notice that Sufia 5.0, the final Fedora 3-based Sufia version, is still in release candidate status. We hope to have this rectified soon.

Many thanks to all the developers who have made this release possible, and to the leadership at each of their institutions for recognizing the value of this project.

Posted in Events, News

Hydra-head 9.1.0 and 9.1.1 released

We’re pleased to announce that hydra-head 9.1.0 and 9.1.1 have been released.

Version 9.1.0 brings support for Blacklight 5.10. See the upgrade guide here:

Version 9.1.1 fixes policy based access controls. They were not working in hydra-head 9 due to using incorrect Solr queries.

Thanks to Justin Coyne for the work.

Posted in News, Software updates

OR2015 NEWS: Registration Opens; Speakers from Mozilla and Google Announced

Of interest to many in the Hydra Community:

We are pleased to announce that registration is now open for the 10th International Conference on Open Repositories, to be held on June 8-11, 2015 in Indianapolis, Indiana, United States of America. Full registration details and a link to the registration form may be found at:

OR2015 is co-hosted by Indiana University Bloomington Libraries, University of Illinois at Urbana-Champaign Library, and Virginia Tech Libraries.

OR2015 Registration and Fees:

An early registration fee of $450 USD will be available until May 8. After May 8, the registration fee will increase to $500 USD. This registration fee covers participation in general conference sessions, workshops, and interest group sessions, as well as the conference dinner on Wednesday, June 10 and poster reception on Tuesday, June 9. For a draft outline of the conference schedule, please see:

Participants may register online at: If you have any questions about registering for OR2015, please contact the Conference Registrar at Any other questions about the conference may be directed to the conference organizing committee by using the form at:

Hotel Reservations:

The OR2015 conference will take place at the Hyatt Regency Indianapolis hotel, conveniently located in the heart of downtown Indianapolis. Special room rates at the Hyatt starting at $159 USD per night have been negotiated for conference attendees and will be available for booking through May 16. More information on hotel reservations and travel is available at:

Keynote and Featured Speakers:

Reflecting the significant milestone of the 10th Open Repositories conference and this year’s theme of “Looking Back, Moving Forward: Open Repositories at the Crossroads,” we are pleased to announce the conference’s two plenary speakers:

Kaitlin Thaney will be giving the opening keynote talk on the morning of Tuesday, June 9. Kaitlin is director of the Mozilla Science Lab, an open science initiative of the Mozilla Foundation focused on innovation, best practice and skills training for research. Prior to Mozilla, she served as the Manager of External Partnerships at Digital Science, a technology company that works to make research more efficient through better use of technology. Kaitlin also advises the UK government on infrastructure for data intensive science and business, serves as a Director for DataKind UK, and is the founding co-chair for the Strata Conference series in London on big data. Prior to Mozilla and Digitial Science, Kaitlin managed the science program at Creative Commons, worked with MIT and Microsoft, and wrote for the Boston Globe. You can learn more about the Science Lab at  and follow Kaitlin online at @kaythaney.

Anurag Acharya will be the featured speaker at the plenary session on the morning of Wednesday, June 10, presenting on “Indexing repositories: pitfalls and best practices.” Anurag is a Distinguished Engineer at Google and creator of Google Scholar, and he previously led the indexing group at Google. He has a Bachelors in Computer Science from the Indian Institute of Technology, Kharagpur and a PhD in Computer Science from Carnegie Mellon. Prior to joining Google, he was a post-doctoral researcher at the University of Maryland, College Park and an assistant professor at the University of California, Santa Barbara.

We look forward to seeing you at OR2015!

Jon Dunn, Julie Speer, and Sarah Shreeves
OR2015 Conference Organizing Committee

Holly Mercer, William Nixon, and Imma Subirats
OR2015 Program Co-Chairs

Posted in Events, News

Hydra Europe events Spring 2015

Registration is now open for two Hydra events in Europe this spring:

Hydra Europe Symposium – a free event for digital collection managers, collection owners and their software developers that will provide insights into how Hydra can serve your needs

  • Thursday 23rd April – Friday 24th April 2015 | LSE, London

Hydra Camp London – a training event enabling technical staff to learn about the Hydra technology stack so they can establish their own implementation

  • Monday 20th April – lunchtime Thursday 23rd April 2015 | LSE, London

Full details and booking arrangements for both events can be found here.

Posted in Events, News