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1.5.69. How Can I send SOAP requests to Virtuoso SPARQL Endpoint?

This section presents sample scenario how to execute SPARQL query in SOAP request over Virtuoso SPARQL Endpoint.

  1. Assume the following sample SOAP request containing simple SPARQL query: 

    <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <soapenv:Body>
      <query-request xmlns="http://www.w3.org/2005/09/sparql-protocol-types/#">
         <query xmlns="">SELECT DISTINCT ?z FROM virtrdf: {?x ?y ?z .} LIMIT 10</query>
      </query-request>
   </soapenv:Body>
</soapenv:Envelope>

  2. Save locally the content from above for ex. to file with name "soap.xml".

  3. To pass the SOAP request to a Virtuoso SPARQL Endpoint, execute the following curl command: 

    $ curl -d@soap.xml -H "Content-Type:text/xml" -H "SOAPAction: ''" http://example.com/sparql
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
  <soapenv:Body>
    <query-result xmlns="http://www.w3.org/2005/09/sparql-protocol-types/#">
      <sparql xmlns="http://www.w3.org/2005/sparql-results#" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.w3.org/2001/sw/DataAccess/rf1/result2.xsd">
        <head>
         <variable name="z"/>
        </head>
        <results distinct="false" ordered="true">
          <result>
            <binding name="z">
             <uri>http://www.openlinksw.com/schemas/virtrdf#QuadMapFormat</uri>
            </binding>
          </result>
          <result>
            <binding name="z">
             <uri>http://www.openlinksw.com/schemas/virtrdf#QuadStorage</uri>
            </binding>
          </result>
          <result>
            <binding name="z">
             <uri>http://www.openlinksw.com/schemas/virtrdf#array-of-QuadMapFormat</uri>
            </binding>
          </result>
          <result>
            <binding name="z">
             <uri>http://www.openlinksw.com/schemas/virtrdf#QuadMap</uri>
            </binding>
          </result>
          <result>
            <binding name="z">
             <uri>http://www.openlinksw.com/schemas/virtrdf#QuadMapValue</uri>
            </binding>
          </result>
          <result>
            <binding name="z">
             <uri>http://www.openlinksw.com/schemas/virtrdf#array-of-QuadMapColumn</uri>
            </binding>
          </result>
          <result>
            <binding name="z">
             <uri>http://www.openlinksw.com/schemas/virtrdf#QuadMapColumn</uri>
            </binding>
          </result>
          <result>
            <binding name="z">
             <uri>http://www.openlinksw.com/schemas/virtrdf#array-of-QuadMapATable</uri>
            </binding>
          </result>
          <result>
            <binding name="z">
             <uri>http://www.openlinksw.com/schemas/virtrdf#QuadMapATable</uri>
            </binding>
          </result>
          <result>
            <binding name="z">
             <uri>http://www.openlinksw.com/schemas/virtrdf#QuadMapFText</uri>
            </binding>
          </result>
        </results>
      </sparql>
    </query-result>
  </soapenv:Body>
</soapenv:Envelope>
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