%META:TOPICPARENT{name="VirtSpongerLinkedDataHooksIntoSPARQL"}%


---+Example with INPUT Pragma grab-depth

The following example demonstrates usage of the <code> grab-depth </code> pragma:

<verbatim>
DEFINE input:grab-var "?more"
DEFINE input:grab-depth 10
DEFINE input:grab-limit 100
DEFINE input:grab-base "http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1300"
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

SELECT ?id ?firstname ?nick
WHERE 
  {
    GRAPH ?g {
               ?id rdf:type foaf:Person .
               ?id foaf:firstName ?firstname .
               ?id foaf:knows ?fn .
               ?fn foaf:nick ?nick .
               OPTIONAL { ?id rdfs:SeeAlso ?more }
            }
  }
LIMIT 10
</verbatim>
   * [[http://bit.ly/YWQXOy][View the SPARQL Query Definition via SPARQL Protocol URL]]
   * [[http://bit.ly/YcQ8Aj][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]]