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---+ Basic Tutorial for iSPARQL, the Interactive SPARQL Query Builder (part 2)

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---++ Building a query on a blank canvas, starting with pre-defined schema nodes

This tutorial contains Initial Steps assuming a query is being built from a blank canvas and you want the Nodes to be pre-typed (i.e., you 
will drag-and-drop from the schema window).

   1 Go to http://cname/isparql, for ex. http://id.myopenlink.net/isparql
   1 The iSPARQL initialization window will be shown:
%BR%%BR% <img src="%ATTACHURLPATH%/isparqlload.png" style="wikiautogen"/>%BR%%BR%
   1 Finally will be presented the iSPARQL <strong>Advanced</strong> tab open with a default SPARQL query:     
<verbatim>
SELECT * WHERE {?s ?p ?o}
</verbatim>
%BR%%BR% <img src="%ATTACHURLPATH%/isparql1.png" style="wikiautogen"/>%BR%%BR%
   1 Go to <strong>QBE</strong> tab:
%BR%%BR% <img src="%ATTACHURLPATH%/isparql2.png" style="wikiautogen"/>%BR%%BR%
   1 Click the <strong>Clear Pane</strong> icon on the toolbar to empty the Canvas. 
%BR%%BR% <img src="%ATTACHURLPATH%/isparql3.png" style="wikiautogen"/>%BR%%BR%
%BR%%BR%<img src="%ATTACHURLPATH%/isparql4.png" style="wikiautogen"/>%BR%%BR%
   1 Change the <strong>Data Source URI</strong> field value on the QBE tab to the Graph of the database against which you want to execute your query, for ex: http://id.myopenlink.net/dataspace
%BR%%BR%<img src="%ATTACHURLPATH%/isparql5.png" style="wikiautogen"/>%BR%%BR%
   1 Go to the <strong>Schemas</strong> Pane.
   1 Import the Schema that contains the Terms to be used in your Graph Pattern. For this example, import the FOAF schema - http://xmlns.com/foaf/0.1/
%BR%%BR% <img src="%ATTACHURLPATH%/isparql6.png" style="wikiautogen"/>%BR%%BR%
%BR%%BR% <img src="%ATTACHURLPATH%/isparql7.png" style="wikiautogen"/>%BR%%BR%
   1 Click on the imported schema <strong>Classes</strong> item <strong>+</strong> icon to expand it. 
%BR%%BR% <img src="%ATTACHURLPATH%/isparql8.png" style="wikiautogen"/>%BR%%BR%
   1 Drag a <strong>Subject Node</strong>, e.g. <strong>Person</strong>, onto the Canvas.
%BR%%BR% <img src="%ATTACHURLPATH%/isparql9.png" style="wikiautogen"/>%BR%%BR%
   1 Select the node with value <strong>?</strong> and in the <strong>Node</strong> pane, change the <strong>Variable</strong> field value to: <strong>?s</strong>
%BR%%BR%<img src="%ATTACHURLPATH%/isparql10.png" style="wikiautogen"/>%BR%%BR%
   1 Select the <strong>Add nodes</strong> icon from the QBE Navigation bar, and drag an <strong>Object Node</strong> on to the Canvas.
%BR%%BR%<img src="%ATTACHURLPATH%/isparql11.png" style="wikiautogen"/>%BR%%BR%
   1 In the <strong>Node</strong> pane, enter the <strong>Variable</strong> value: <strong>?pname</strong>
%BR%%BR%<img src="%ATTACHURLPATH%/isparql12.png" style="wikiautogen"/>%BR%%BR%
   1 Select the <strong>Connector</strong> icon from the QBE Navigation bar and connect the node <strong>?s</strong> with node <strong>?pname</strong>.
%BR%%BR%<img src="%ATTACHURLPATH%/isparql13.png" style="wikiautogen"/>%BR%%BR%
   1 Click on the FOAF schema <strong>Properties</strong> item <strong>+</strong> icon to expand it. 
%BR%%BR%<img src="%ATTACHURLPATH%/isparql14.png" style="wikiautogen"/>%BR%%BR%
   1 Drag an <strong>Attribute</strong> (A) or <strong>Relationship</strong> (R) property onto the connector between the nodes <strong>?s</strong> and <strong>?pname</strong>. For example, drag the attribute <strong>name</strong>.
%BR%%BR%<img src="%ATTACHURLPATH%/isparql15.png" style="wikiautogen"/>%BR%%BR%
   1 Click the <strong>Run Query</strong> button.
   1 You should see the results found by the query execution shown in the Results tab.
%BR%%BR%<img src="%ATTACHURLPATH%/isparql16.png" style="wikiautogen"/>%BR%%BR%
   1 To view the generated query:
      1. Go to <strong>QBE</strong> tab and click the <strong>Generate</strong> button or
      1. Go directly to the <strong>Advanced</strong> tab:
   1 As result the generated query will be shown in the Advanced tab canvas.
%BR%%BR%<img src="%ATTACHURLPATH%/isparql17.png" style="wikiautogen"/>%BR%%BR%

---++Related

   * [[InteractiveSparqlQueryBuilderTutorials][iSPARQL Tutorials]]
   * [[InteractiveSparqlQueryBuilderBasicTutorial2][Basic iSPARQL Tutorial with query built from a blank canvas and Nodes dragged from the Toolbar]]
   * [[InteractiveSparqlQueryBuilderBasicTutorial][Basic iSPARQL Tutorial]]
   * [[InteractiveSparqlQueryBuilderQueryTutorialConstruct][iSPARQL Querying Tutorial with SPARQL Query type "CONSTRUCT"]]
   * [[InteractiveSparqlQueryBuilderQueryTutorialDescribe][iSPARQL Querying Tutorial with SPARQL Query type "DESCRIBE"]]
   * [[InteractiveSparqlQueryBuilderQueryTutorialDescribeGoogleMapView][iSPARQL Querying Tutorial "DESCRIBE" with Google Maps View Results]]
   * [[InteractiveSparqlQueryBuilderQueryTutorialInsert][iSPARQL Querying Tutorial with SPARQL Query type "INSERT"]]
   * [[InteractiveSparqlQueryBuilderQueryTutorialDelete][iSPARQL Querying Tutorial with SPARQL Query type "DELETE"]]
   * [[InteractiveSparqlQueryBuilderQueryTutorialSlc][iSPARQL Querying Tutorial with SPARQL Query type "SELECT"]]   
   * [[OATWikiWebIndex][OpenLink AJAX Toolkit (OAT)]]
   
   

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