Fedora Commons Update

Transcription

1 Fedora Commons Update Sandy Payette, Executive Director Sun PA-SIG May 27, 2008

2 Use Cases We Support Scholarly Communication Data Curation and Linking Science Humanities Semantic Knowledge Spaces Preservation and Archiving R.D.W. Connor

3 How? Scholarly and e-research Digital Libraries Asset Management Web 2.0 Other Archive Your Applications OAI Search Ingest Etc. Fedora Services Manage API Ingest Validate Access API Manage Policy Registry Search Access RDF Query ServiceBind Fedora Services and Middleware Layer Fedora Repository Store Registry RDF Index Fast Disk Honeycomb Other Storage Layer

4 Working Together with Target Communities FC 2008 Community Solution Councils

5 Fedora Commons Open Source Projects Fedora Repository Project The original Fedora Project Fedora Middleware Project Service integration and enterprise-orientation for repositories Akubra Storage Project New storage plug-in architecture; transactional file system; Topaz Project Incubated project; persistence service based on semantic triplestore Mulgara Triplestore Project Independent, but FC supports developer; highly scalable triplestore Fedora Commons open source projects can be integrated together.

6 Fedora Repository Key Features Digital Object Model Aggregate content datastreams in an object any type of content Intermix both local content and external content Relationships among digital objects (via RDF) Register content models for known object patterns Repository Service Modular Web service interfaces (REST/SOAP) Versioning Dynamic service binding based on object content model types File-centric (all essential characteristics in XML files) RDF-based indexing (semantic triplestore index with query) Security with pluggable authentication and XACML policies Journaling (replay all events to create replicas of repository)

7 Example Image Object Persistent ID DC Flexible Digital Object Model RELS-EXT Audit Trail Policy Get-Thumbnail Get-Web-Size Get-High-Resolution Image Preserve Metadata Optional: dynamic services on objects Custom Metadata Datastream content can be either local (managed by the repository) or external (by-reference and mediated by the repository)

8 Digital Objects with relationships PID 5 scholarly object PID 1 PID 2 PID 3 PID 4 Amazon Web Service library content External commercial web content

9 Fedora Repository Atom (2008) OAI-ORE (2008) new formats Fedora APIs (SOAP and REST) Manage API Access API Registry Search RDF Query Additional APIs: SWORD (2008) APP (full)? JSR 170? Other? Ingest Validate Store Manage Policy Registry Access CMABind RDF Index Sun Honeycomb Triplestore new plug-in option File system (Objects) RDBMS (Registry)

10 Upcoming work with Sun Replica repositories, each with different underlying storage system Now: Fedora Journaling Future: Journal Event Messaging via Fedora JMS Leader Repository Follower Repository API events Journal Event Log API events Sun Thumper Sun Honeycomb Can configure multiple followers

11 Fedora Middleware and Services First, we are providing simple messaging (via ActiveMQ in Fedora 3.0) Fedora Repository Service Simple JMS GSearch OAI Ingest services listen and consume events or other messages repository publishes events More Next, lightweight integration with workflow engine(s); orchestration

12 Akubra Project backend storage interoperability Fedora Repository Service Manage API Access API Registry Search RDF Query Store New pluggable storage framework Akubra File system (Objects) Plug-in 1 Plug-in 2 Plug-in 3 Sun Honeycomb RDBMS (registry) Triplestore (Mulgara/MPTStore) Transactional File System

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14 Roadmap Active Themes Ease of use Re-use and interoperability Web orientation Improved modularity Pluggable storage Workflow engine Messaging RDF and Semantic technologies Content models Solution bundles (including end-user applications)

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17 Sloganfest 2008 Simple Message

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