title: JENA - Check whether a SPARQL Update Query fails or not
body: <p>I write the backend for an OWL database and need to check whether the erasure or the insertion of a triple was successful.</p>
  
  <p>What I have got until now looks like that:</p>
  
  <pre><code>String queryUpdate =
  /*Update String*/
          UpdateRequest request = UpdateFactory.create(queryUpdate);
          UpdateProcessor proc = UpdateExecutionFactory.create(request, graphStore);
          proc.execute();
  </code></pre>
  
  <p>So what I need is something like a boolean value from the proc.execute() method.</p>
  
  <p>Does something comparable exist?</p>