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This document is a rather small documentation of dspace-rdf, but I wanted to share this contribution as early as possible. As I developed dspace-rdf as part of my thesis I was not allowed to speak about it before I handed my thesis in to my university. So this document should be the basis to introduce dspace-rdf and to discuss design decisions I have made. German native speakers should take a look inside my thesis. Chapters 4.2 and 5.1 explain the ideas behind the concept, while chapters 4.3 and 5.2 documents the implementation. Chapter 5.3 contains the things to be done before dspace-rdf can be used in a productive environment. On topic left to be done actually is a good english documentation.
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Beside RDFUtil you can use the classes in the package org.dspace.rdf.providing.negotiation for content negotiation. I added content negotiation to JSPUI already, but it should be added to XMLUI as well. It would be even better to use content negotiation directly in Persistent Identifier Resolvers that support content negotiation. The resolver under dx.doi.org supports content negotiation, but the DOIIdentifierProviders (currently contains a DOIIdentifierprovider for EZID and on for DataCite) must be extended before the content negotiation can be used.
TODOs
There are some things left to be done before dspace-rdf should be used in a productive environment. The most important topic is a good default configuration as it is configurable which metadata fields gets converted, which vocabularies gets used and which links are generated. While I added some default configuration already, it should be discussed which vocabularies should be used, which links should be generated and so on. G.e. it is impossible to automatically convert the most Bitstreams. But they should be linked at least. I'm not sure which vocabulary should be used to link them. While EPrints made some design decisions I don't follow, they already developed a vocabulary to describe repositories in RDF. We should take a look at the EPrints Ontology and decide whether it can be used in DSpace, whether it must be extended or whether a more generic Ontology could be developed to describe repositories independent from the software that is used to realize them.
an English documentation as my thesis is written in German.