[dotNetRDF-Develop] Issue CORE-415 has been added to a project you are monitoring.

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<p>The following issue has been added to a project that you are monitoring.</p>
<table border="0">
  <tr>
    <td width="90px" valign="top"><b>Title:</b></td>
    <td>SparqlQueryParser produces invalid FILTER(NOT EXISTS ..) expression from valid input.</td>
  </tr>
  <tr>
    <td><b>Project:</b></td>
    <td>Core Library (dotNetRDF.dll)</td>
  </tr>
  <tr>
    <td><b>Created By:</b></td>
    <td>Sebastian Faubel</td>
  </tr>
  <tr>
    <td><b>Milestone:</b></td>
    <td>Unscheduled</td>
  </tr>
  <tr>
    <td><b>Category:</b></td>
    <td>Query</td>
  </tr>
  <tr>
    <td><b>Priority:</b></td>
    <td>Normal</td>
  </tr>
  <tr>
    <td><b>Type:</b></td>
    <td>Bug</td>
  </tr>
  <tr>
    <td><b>Description:</b></td>
  </tr>
  <tr>
    <td colspan="2"><p>
	When I load a SPARQL query which contains FILTER NOT EXISTS { ?s ?p ?o } into the query parser, the generated query contains a FILTER(NOT EXISTS { ?s ?p ? o }) expression which is not valid SPARQL 1.1 syntax (http://www.w3.org/TR/sparql11-query/#rFilter) (tested in OpenLink Virtuoso). Bracketted expressions after the FILTER token are only allowed for numerical or logical expressions.. :)</p></td>
  </tr>
</table>
<p>
            More information on this issue can be found at
            <a href="http://www.dotnetrdf.org/tracker/Issues/IssueDetail.aspx?id=415" target="_blank">http://www.dotnetrdf.org/tracker/Issues/IssueDetail.aspx?id=415</a></p>
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