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Everyday Tools for the Semantic Web Developer Rob Vesse rvesse@dotnetrdf.org Cray Inc

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About Me• Software Engineer at Cray• Writing up my PhD Thesis in spare time – “Link Integrity for the Semantic Web”• Run the dotNetRDF Project – Started January 2009 – Latest Releases • 0.5.1 Beta (APIs) • 0.4.0 Beta (Toolkit)12/6/2011 http://www.dotnetrdf.org 2

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My Life as a Semantic Web Developer• Constantly working with different data sources, formats, vocabularies etc.• Was frustrated by limited tooling around conversion, query prototyping and editing – Especially the *nix/Java bias of available tooling• Seemed pointless to keep writing tiny Java/.Net programs to do everyday tasks12/6/2011 http://www.dotnetrdf.org 3

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Tools• All free to use/open source – All of which I’ve used at one stage or another – Some of which I use on a daily basis• Demos – Going to demo my favourite tool in each category – Slides have links to other useful tools and will be available on SlideShare12/6/2011 http://www.dotnetrdf.org 4

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Data Conversion - rapper• Part of the Redland family of tooling by Dave Beckett – http://librdf.org/raptor/rapper.html• *nix based – needs cygwin on Windows• Example Usage: – rapper –g –o turtle input.rdf > output.ttl12/6/2011 http://www.dotnetrdf.org 5

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Editing - rdfEditor• Part of the dotNetRDF Toolkit – http://www.dotnetrdf.org/content.asp?pageID=rd fEditor• Windows only – Mono does not support the required APIs unfortunately• Notepad replacement for RDF editing with syntax highlighting, auto-complete and validation capabilities12/6/2011 http://www.dotnetrdf.org 6

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Query Prototyping - Fuseki• Part of the family of Jena Tooling – http://openjena.org/wiki/Fuseki• Provides a HTTP server for SPARQL Query and Update runnable from the command line• Can use persistent TDB storage (Jena’s native triple store)• Example Usage: – java –jar fuseki-sys.jar --update --loc=DB12/6/2011 http://www.dotnetrdf.org 7

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Management - Store Manager• Part of the dotNetRDF Toolkit – http://www.dotnetrdf.org/content.asp?pageID=St ore%20Manager• .Net Based – needs Mono on *nix• GUI for working with a variety of Triple Stores through a standard interface12/6/2011 http://www.dotnetrdf.org 8

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Questions?rvesse@dotnetrdf.org Twitter: @RobVesse

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Other Recommended Tools• Conversion – riot (Jena ARQ)• Query Prototyping – SparqlGUI (dotNetRDF Toolkit) – Twinkle (by Leigh Dodds)• Management – Sesame Windows Client12/6/2011 http://www.dotnetrdf.org 10