Repositories have traditionally focused on storing content and metadata for use by local applications and services, but this is a poor fit for the world of linked open data. Fedora, the flexible, extensible, open source repository platform, has been designed and implemented as not just a repository but a linked data server. This has been accomplished primarily through alignment with the Linked Data Platform recommendation from the W3C, but Fedora also has a formally specified REST API that aligns with a variety of modern web standards, such as Memento, Web Access Control, and Activity Streams 2.0. This focus on linked data and web standards has allowed Fedora to serve as a reliable repository that also powers web-based linked open data applications. The latest version of Islandora, codenamed CLAW, integrates Fedora with Drupal 8, the popular content management system. CLAW takes full advantage of Fedora’s linked data capabilities while also leveraging Drupal’s powerful network of contributed modules to provide a modern, web-based repository platform that enables linked open data applications. This can be seen in production at the University of Toronto Scarborough (UTSC), where CLAW has been used to build a site that provides Palladio visualizations and exposes a SPARQL endpoint for complex RDF queries. This presentation will provide an overview of the latest versions of Fedora and Islandora CLAW with a focus on the linked data and web-based features and functionality. It will also use the UTSC site as an example of how Fedora can power linked open data applications. (Source code: fcrepo4, CLAW) |