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POjava.lang.InstantiationError while running sparql query in jena
 

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  1. POjava.lang.InstantiationError while running sparql query in jena
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    <p>Dear Friends I m using Jena framework with RDF database model with virtuoso in my project. my jena version is jena-core2.7.2 and jena-arq-2.9.2</p> <p>Here is the my code which is giving me error</p> <pre><code>public JsonArray getCountryAutoSuggestData() { JsonArray countryArray = new JsonArray(); Model model = DataModel.getModel(); String mystr = " PREFIX plcontologyurl:&lt;http://www.plcontology.com/#&gt; " + " PREFIX rdf:&lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt; " + "select ?cn" + " where " + " { " + " ?d plcontologyurl:Country_Name ?cn . " + "}"; Query query = QueryFactory.create(mystr); QueryExecution qe = QueryExecutionFactory.create(query, model); QuerySolutionMap qMap = new QuerySolutionMap(); qe.setInitialBinding(qMap); ResultSet rs = qe.execSelect(); while(rs.hasNext()) { qMap = (QuerySolutionMap)rs.next(); countryArray.add(new JsonPrimitive(qMap.getLiteral("cn").getString())); } return countryArray; } </code></pre> <p>Error is java.lang.InstantiationError: com.hp.hpl.jena.sparql.engine.binding.BindingMap at line while(rs.hasNext())</p> <p>I tried looking for the problem and I found one <a href="http://www.mail-archive.com/owlim-discussion@ontotext.com/msg01415.html" rel="nofollow">relevant discussion</a></p> <p>They are saying that now com.hp.hpl.jena.sparql.engine.binding.BindingMap is not a simple class now in this version but an interface now.</p> <p>If it is like that then how to run sparql query in the current version. Please give an example based on the code i have shared. Thanks in advance.</p>
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