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Fedora Overview
- 1. Fedora-Commons Repository A brief overview Etienne Posthumus, DPO, TU Delft Library 08-06-09
- 2. What is it? Fedora is a general-purpose, open-source digital object repository system.
- 3. What is it? Fedora is a general-purpose, open-source digital object repository system. "Flexible Extensible Digital Object Repository Architecture" NOT the Linux distribution
- 4. What is it? Fedora is a general-purpose, open-source digital object repository system. …a persistence and service delivery platform
- 5. What is it? Fedora is a general-purpose, open-source digital object repository system. …a persistence and service delivery platform …implemented as a set of Java services (Tomcat)
- 6. What is it? Fedora is a general-purpose, open-source digital object repository system. A well-funded active community with a long history.
- 7. Conforms to the OAIS reference model Open Archival Information System - an ISO model defined by Consultative Committee for Space Data Systems widely adopted in Archives community Built on sub-systems Open Source, Open Standards
- 8. Persistent digital archive ‘files on disk’ bootstrappeable in the face of disaster XML containers asset management Built on sub-systems Open Source, Open Standards
- 9. Persistent digital archive ‘files on disk’ bootstrappeable in the face of disaster XML containers asset management Scaleable triple-store Mulgara Built on sub-systems Open Source, Open Standards
- 10. Persistent digital archive ‘files on disk’ bootstrappeable in the face of disaster XML containers asset management Scaleable triple-store Mulgara Service delivery XSLT via Saxon built-in others pluggable Built on sub-systems Open Source, Open Standards
- 11. Advantages? Scaling Integrated Asset management Extensive Versioning Audit trails Large(ish) community, esp. mindshare General ‘fit and polish’ Goal is support for > 10 million objects
- 12. Downsides? It’s a toolbox not a complete solution (front-end support) Java code base (for some this is an advantage ;-) Moving target in terms of innovation (also debatable) Complexity of some concepts, steep learning curve A lot of DIY is needed
- 13. Digital Object Model Compound objects, aggregate items per object
- 14. Digital Object Model Compound objects, aggregate items per object Some ‘reserved’ item IDs
- 15. Digital Object Model Compound objects, aggregate items per object Some ‘reserved’ item IDs Essentially an XML container
- 16. Digital Object Model <foxml:digitalObject PID="demo:31" VERSION="1.1" xmlns:foxml="info:fedora/fedora-system:def/foxml#" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="info:fedora/fedora-system:def/foxml# http://www.fedora.info/definitions/1/0/foxml1-1.xsd"> <foxml:objectProperties> <foxml:property NAME="info:fedora/fedora-system:def/model#state" VALUE="Active"/> <foxml:property NAME="info:fedora/fedora-system:def/model#ownerId" VALUE="fedoraAdmin"/> <foxml:property NAME="info:fedora/fedora-system:def/model#createdDate" VALUE="2008-07-02T05:09:42.015Z"/> <foxml:property NAME="info:fedora/fedora-system:def/view#lastModifiedDate" VALUE="2008-07-02T05:09:42.015Z"/> </foxml:objectProperties> <foxml:datastream CONTROL_GROUP="X" ID="DC" STATE="A" VERSIONABLE="true"> <foxml:datastreamVersion CREATED="2008-07-02T05:09:43.328Z" FORMAT_URI="http://www.openarchives.org/OAI/2.0/oai_dc/" ID="DC1.0" LABEL="Dublin Core Record for this object" MIMETYPE="text/xml"> <foxml:xmlContent> <oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"> <dc:title>Apache Batik 1.5 Demo Directory</dc:title> <dc:creator>Chris Wilper</dc:creator> <dc:creator>The Apache Group</dc:creator> <dc:subject>svg</dc:subject> <dc:publisher>The Apache Group</dc:publisher> <dc:format>image/svg+xml</dc:format> <dc:identifier>demo:31</dc:identifier> <dc:relation>http://xml.apache.org/batik/</dc:relation> <dc:rights>The Apache License</dc:rights> </oai_dc:dc> </foxml:xmlContent> </foxml:datastreamVersion> </foxml:datastream> <foxml:datastream CONTROL_GROUP="E" ID="DS1" STATE="A" VERSIONABLE="true"> <foxml:datastreamVersion CREATED="2008-07-02T05:09:43.328Z" ID="DS1.0" LABEL="Local copy of batikBatik.svg" MIMETYPE="image/svg+xml"> <foxml:contentLocation REF="http://www.fedora-commons.org/demo/misc/batikBatik.svg" TYPE="URL"/> </foxml:datastreamVersion> </foxml:datastream> An Example
- 17. Content Model Architecture “ an integrated structure for persisting and delivering the essential characteristics of digital objects in Fedora” Modelling behaviours and structure of objects. Complicated, fairly new, not widely implemented yet, in flux. … can also be safely ignored when starting out. (which we did not realise)
- 18. Fedora at TU Delft Library Used to create a repository Infrastructure
- 19. Fedora at TU Delft Library Used to create a Repository Infrastructure Multiple projects: Institutional Repository (academic output) Special Collections (Tresor, bouwkunde dias) Expert Search (finding People) 3TU Datacentrum
- 20. Implementation Front-end is Django application
- 21. Implementation Front-end is Django application We use the REST API for communication
- 22. Implementation Front-end is Django application We use the REST API for communication Middleware as Python code providing a web API
- 23. Implementation Front-end is Django application We use the REST API for communication Middleware as Python code providing a web API MOAI flexible OAI-PMH service
- 24. Implementation Front-end is Django application We use the REST API for communication Middleware as Python code providing a web API MOAI flexible OAI-PMH service Indexing via SOLR subsequently linked to DISCOVER
- 26. Conversion of existing repository Legacy Stellent CMS stored in Oracle Circa 12000 items Mostly PDF plus metadata Conversion scripts in Python Bulk ingest
- 27. Community Participation NL Fedora Usergroup Contact with key Fedora participants at conferences Presentations and workshop Developer days planned Possible collaboration on development Sponsorship of open-source components
- 28. Plans Convert existing repository with existing functionality Incrementally build in new features on ongoing basis Extend APIs and services Linked Data repository More innovative repository applications