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n2:VirtSpongerLinkedDataHooksIntoSPARQLEx6

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2017-06-13T05:43:40.846675

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2017-06-13T05:43:40.846675

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VirtSpongerLinkedDataHooksIntoSPARQLEx6

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VirtSpongerLinkedDataHooksIntoSPARQLEx6

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%META:TOPICPARENT{name="VirtSpongerLinkedDataHooksIntoSPARQL"}% ---+Example with INPUT Pragma grab-follow-predicate The following example demonstrates usage of the <code> grab-follow-predicate </code> pragma: <verbatim> DEFINE input:grab-var "friend" DEFINE input:grab-var "Others" DEFINE input:grab-follow-predicate <http://xmlns.com/foaf/0.1/#knows> DEFINE input:grab-depth 2 DEFINE input:grab-limit 50 PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX foaf: <http://xmlns.com/foaf/0.1/> PREFIX doap: <http://usefulinc.com/ns/doap#> SELECT DISTINCT * WHERE { { { { SELECT ?start ?friend WHERE { ?start foaf:knows ?friend . } } OPTION ( transitive, t_distinct, t_max (5), t_in (?start), t_out (?friend) ) FILTER ( ?start = <http://www.w3.org/People/Berners-Lee/card#i> ) } ?friend foaf:knows ?Others . } } LIMIT 10 </verbatim> * [[http://bit.ly/XzPT0i][View the SPARQL Query Definition via SPARQL Protocol URL]] * [[http://bit.ly/11G4102][View the SPARQL Query Results via SPARQL Protocol URL]] ---++Sponger Usage Examples * [[http://docs.openlinksw.com/virtuoso/virtuososponger.html#virtuosospongerusageprocessorex][SPARQL Processor Usage Example]] * [[http://docs.openlinksw.com/virtuoso/virtuososponger.html#virtuosospongerusageproxyex2][RDF Proxy Service Example]] * [[http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtDeployingLinkedDataGuide_BrowsingNorthwindRdfView#AncMozToc2][Browsing & Exploring RDF View Example Using ODE]] * [[http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtDeployingLinkedDataGuide_BrowsingNorthwindRdfView#AncMozToc3][Browsing & Exploring RDF View Example Using iSPARQL]] * [[http://docs.openlinksw.com/virtuoso/rdfinsertmethods.html#rdfinsertmethodplapissimpleexample][Basic Sponger Cartridge Example]] * [[http://docs.openlinksw.com/virtuoso/virtuososponger.html#virtuosospongerusagebriefex][HTTP Example for Extracting Metadata using CURL]] * [[http://docs.openlinksw.com/virtuoso/virtuososponger.html#virtuosospongercartridgetypesmetarestexamples][RESTFul Interaction Examples]] * [[http://docs.openlinksw.com/virtuoso/sect5_virtuosospongercreatecustcartrrgstflickr.html][Flickr Cartridge Example]] * [[http://docs.openlinksw.com/virtuoso/virtuososponger.html#virtuosospongercreatecustcartrexmp][MusicBrainz Metadatabase Example]] * [[VirtTipsAndTricksGuideAddTriplesNamedGraph][SPARQL Tutorial -- Magic of SPARUL and Sponger]] ---++Related * [[VirtSpongerLinkedDataHooksIntoSPARQL][Sponger's Linked Data Middleware Hooks into SPARQL]] * [[VirtSponger][Virtuoso Sponger]] * [[http://virtuoso.openlinksw.com/Whitepapers/html/VirtSpongerWhitePaper.html][Technical White Paper]] * [[VirtSpongerCartridgeSupportedDataSources][Supported Virtuoso Sponger Cartridges]] * [[SPARQLSponger][SPARQL Sponger]] * [[VirtInteractSpongerMiddlewareRESTPatterns][Interacting with Sponger Middleware via RESTful Patterns]] * [[VirtSpongerCartridgeSupportedDataSourcesMetaRESTExamples][Interacting with Sponger Meta Cartridge via RESTful Patterns]] * [[VirtSpongerCartridgeRDFExtractor][Sponger Cartridge RDF Extractor]] * [[RDFMappers][ Extending SPARQL IRI Dereferencing with RDF Mappers]] * [[VirtSpongerCartridgeProgrammersGuide][Programmer Guide for Virtuoso Linked Data Middleware ("Sponger")]] * [[VirtProgrammerGuideRDFCartridge][Create RDF Custom Cartridge Tutorial]] * [[VirtSpongerCartridgeSupportedDataSources][OpenLink-supplied Virtuoso Sponger Cartridges]] * [[VirtAuthServerUI][Virtuoso Authentication Server]] * [[VirtOAuthSPARQL][Virtuoso SPARQL OAuth Tutorial]] * [[VirtSpongerACL][Virtuoso Sponger Access Control List (ACL) Setup]] * [[VirtSPARQLSecurityWebID][WebID Protocol & SPARQL Endpoint ACLs Tutorial]] * [[http://docs.openlinksw.com/virtuoso/virtuososponger.html][Virtuoso Documentation]]

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VirtSpongerLinkedDataHooksIntoSPARQLEx6

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2017-06-13T05:43:40Z

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2017-06-13T05:43:40Z

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