Fedora Commons: NOW AVAILABLE: Production-Ready Fedora 3.0 Fits With the Web

Fedora Commons provides open-source software to ensure durability and integrity of digital content, use semantics to contextualize and inter-relate content from many sources, and to enable the creation of innovative, collaborative information spaces.

Ithaca, NY--Today Fedora Commons <http://fedora-commons.org> released version 3.0 of the popular Fedora software that completes all general release features. Dan Davis, Chief Software Architect, Fedora Commons, explained, “We are pleased to offer a Fedora 3.0 that is a foundational step towards a model-driven content architecture.” He went on to say, “Users will find it simpler to maintain and operate their repositories with version 3.0—it’s more scalable and fits better into the Web.”

Fedora 3.0 features the Content Model Architecture (CMA), an integrated structure for persisting and delivering the essential characteristics of digital objects in Fedora. The software is available at http://www.fedora-commons.org/ and at http://sourceforge.net/projects/fedora-commons. The Fedora CMA plays a central role in the Fedora architecture, in many ways forms the over-arching conceptual framework for future development of Fedora Repositories.

Overview of New Features in Fedora 3.0 Release
-Content Model Architecture – Provides a model-driven approach for persisting and delivering the essential characteristics of digital content in Fedora
-Fedora REST API – A new API that exposes a subset of the Access and Management API using a RESTful Web interface contributed by MediaShelf
-Mulgara Support – Fedora supports the Mulgara 2.0 Semantic Triplestore replacing Kowari
-Migration Utility – Provides an update utility to convert existing collections for Content Model Architecture compatibility
-Relational Index Simplification – The Fedora schema was simplified making changes easier without having to reload the database and significantly increasing scalability
-Dynamic Behaviors – Objects may be added or removed dynamically from the system moving system checks into run-time errors
-Error Reporting – Provides improved run-time error details
-Multiple Owner as a CSV String – Enables using a CSV string as ownerID and in XACML policies
-Java 6 Compatibility – Fedora may be optionally compiled using Java 6 while retaining support for Java Enterprise Edition 1.5 deployments
-Relationships API – API-M has been extended to enable adding, removing, and discovering RDF relations between Fedora objects
-Revised Fedora Object XML Schemas – The new schemas are simpler, supporting the CMA and removing Disseminators
-Atom Support – Fedora objects can now be imported and exported in the Atom format
-Messaging Support – Integrates JMS messaging for sending notification of important events
-Validation Framework – Provides system operators a way to validate all or part of their repository, based on content models
-3.0-Compatible Service Releases – New versions of the OAI Provider and GSearch services are compatible with Fedora 3.0. The GSearch release also enables messaging support for GSearch, which allows for more robust and seamless integration with the Fedora repository.
-Many new enhancements--see the Release Notes here: http://www.fedora-commons.org/documentation/3.0/userdocs/distribution/release-notes.html

The Fedora CMA builds on the Fedora architecture simplifies use while unlocking potential. Dan Davis explains the CMA in the context of Fedora 3.0, “It's a hybrid. The Fedora CMA handles content models that are used by publishers and others, and is also a computer model that describes an information representation and processing architecture.” By combining these viewpoints, Fedora CMA has the potential to provide a way to build an interoperable repository for integrated information access within organizations and to provide durable access to our intellectual works. Please continue to contribute your observations and comments to fedora-commons-developers@lists.sourceforge.net or fedora-commons-users@lists.sourceforge.net. Fedora 2.2.2 will continue to be supported for production repositories.

Acknowledgements
The release of Fedora 3.0 is made possible by a collaborative partnership with community developers and the Fedora core software development team that include: Chris Wilper (Fedora Commons), Eddie Shin (Fedora Commons), Bill Branan (Fedora Commons), Paul Gearon (Fedora Commons and Mulgara), Robert Haschart (Fedora Commons), Ross Wayland (Fedora Commons), Aaron Birkland (Fedora Commons and National Science Digital Library), Jim Blake (Fedora Commons and National Science Digital Library), Matt Zumwalt (API-M LITE, Media Shelf), Gert Schmeltz Pedersen (GSearch), Cuong Tran (API-M LITE, Digital Innovation South Africa), Pradeep Krishnan, Ronald Tschalär, Bill Arrow, Jim Paul and many others.

About Fedora Commons
In 2007 Fedora Commons <http://fedora-commons.org> was established as the permanent home of Fedora open source software which is a robust, integrated, repository platform that enables storage, access and management of virtually any kind of digital content. Fedora has been downloaded 25,000 times in the last year, and is used by over 125 national libraries, institutions, and businesses worldwide to do more with their digital collections, enable long-term preservation of digital assets, build on a flexible and extensible, modular architecture, keep control of their data, and participate in Fedora’s innovative community. To find out about Fedora organizations, institutions and projects please visit the Fedora Commons Community Registry.

Posted by Carol Minton Morris 2008-07-30