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2017-06-13T05:39:43.990675

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VirtDeployLinkedWikiV1

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%META:TOPICPARENT{name="VirtDeployMediaWiki"}% ---+Installing The <nowiki>LinkedWiki v1.0.1.2 Extension</nowiki> The LinkedWiki extension allows you to embed a SPARQL query and display the results in your wiki page. ---++Prerequisites * A working copy of <nowiki>MediaWiki</nowiki> hosted on Virtuoso. (See [[http://wiki.usnet.private/dataspace/dav/wiki/Main/MediaWikiInstalltionGuide][the installation guide for MediaWiki on Virtuoso]]). The <nowiki>MediaWiki </nowiki> VAD should be version 1.18.1.22 or higher. * The Semantic <nowiki>MediaWiki</nowiki> extension. (See [[http://wiki.usnet.private/dataspace/dav/wiki/Main/SemanticMWVirtuoso][the installation guide for Semantic MediaWiki on Virtuoso]]). ---+++Step 1. Download the Extension. Go to the [[http://www.mediawiki.org/wiki/Extension:LinkedWiki][LinkedWik Extension page]]. Using the links in the box on the right hand side, download the v1.0.1.2 LinkedWiki extension. ---+++Step 2. Extract. Move the downloaded zip file into your <nowiki>MediaWiki</nowiki> extensions folder. You will find this folder in <i>your Virtuoso installation directory</i>/vsp/vad/vsp/MediaWiki/extension. Extract the extension. ---+++Step 3. Enable and Configure. The LinkedWiki extension is enabled by adding the following lines to the <i>your Virtuoso installation directory</i>/vsp/vad/vsp/MediaWiki/LocalSettings.php file: <verbatim> require_once( $IP."/extensions/LinkedWiki/lib/4store/SparqlTools.php"); require_once( "{$IP}/extensions/LinkedWiki/LinkedWiki.php" ); $smwgDefaultStore = "SMW_LinkedWikiStore"; $wgLinkedWikiGraphWiki = 'http://example.org/mydefaultgraphname'; </verbatim> The extension is further configured by setting the endpoint and the SPARQL endpoint. These will be the same as are used by Semantic <nowiki>MediaWiki</nowiki> and may be something like: <verbatim> $wgLinkedWikiEndPoint = "http://localhost:8890/"; $wgLinkedWikiLocalEndPoint = "http://localhost:8890/sparql/"; </verbatim> ---++Note With this LinkedWiki extension errors are reported every time a page is saved. The message refers to missing functions on a Semantic <nowiki>MediaWiki</nowiki> class and seems to be due to this version of LinkedWiki being developed to use an earlier version of Semantic <nowiki>MediaWiki</nowiki> than the one that is bundled in the Virtuoso <nowiki>MediaWiki</nowiki> VAD. The error does not in fact stop the page being saved. ---++Using LinkedWiki LinkedWiki lets you embed a SPARQL query in a wiki page and display the results as a table. ---+++Simple Query Examples A simple query to get all the triples in all the graphs on the default endpoint: <verbatim> {{#sparql:select * where { ?x ?y ?z . } LIMIT 5}} </verbatim> This displays the first 5 triples. The results will look something like this: * <img src="%ATTACHURLPATH%/result1.png" style="wikiautogen"/>

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