/*
* Copyright Aduna (http://www.aduna-software.com/) (c) 2009.
*
* Licensed under the Aduna BSD-style license.
*/
package org.openrdf.http.server.resources;
import static org.restlet.data.Status.SERVER_ERROR_INTERNAL;
import org.restlet.representation.Representation;
import org.restlet.representation.Variant;
import org.restlet.resource.ResourceException;
import org.openrdf.http.server.helpers.RequestAtt;
import org.openrdf.http.server.resources.helpers.TupleResultResource;
import org.openrdf.query.Query;
import org.openrdf.query.TupleQuery;
import org.openrdf.result.TupleResult;
import org.openrdf.store.StoreException;
/**
* @author Arjohn Kampman
*/
public class TupleQueryResource extends TupleResultResource {
@Override
protected String getFilenamePrefix() {
return "query-result";
}
public TupleResult getTupleResult()
throws ResourceException
{
Query query = RequestAtt.getQuery(getRequest());
if (query == null) {
// query is expected to be available in the request attributes
throw new ResourceException(SERVER_ERROR_INTERNAL, "missing query attribute");
}
if (!(query instanceof TupleQuery)) {
throw new ResourceException(SERVER_ERROR_INTERNAL, "unexpected query type: "
+ query.getClass().getName());
}
try {
return ((TupleQuery)query).evaluate();
}
catch (StoreException e) {
throw new ResourceException(e);
}
}
@Override
protected Representation post(Representation representation, Variant variant)
throws ResourceException
{
return get(variant);
}
}