/*
* Copyright Aduna (http://www.aduna-software.com/) (c) 1997-2006.
*
* Licensed under the Aduna BSD-style license.
*/
package org.openrdf.http.webclient.repository.query;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.validation.BindException;
import org.springframework.web.servlet.ModelAndView;
import org.openrdf.http.webclient.SessionKeys;
import org.openrdf.query.MalformedQueryException;
import org.openrdf.query.QueryEvaluationException;
import org.openrdf.query.TupleQueryResult;
import org.openrdf.repository.RepositoryConnection;
import org.openrdf.repository.RepositoryException;
import org.openrdf.repository.http.HTTPQueryEvaluationException;
import org.openrdf.repository.http.HTTPRepository;
import org.openrdf.repository.http.HTTPTupleQuery;
public class SelectQueryFormController extends QueryFormController {
final Logger logger = LoggerFactory.getLogger(this.getClass());
@Override
public ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object command,
BindException errors)
throws Exception
{
ModelAndView result = null;
HTTPRepository repo = (HTTPRepository)request.getSession().getAttribute(SessionKeys.REPOSITORY_KEY);
SelectQueryInfo qInfo = (SelectQueryInfo)command;
TupleQueryResult queryResult = null;
RepositoryConnection conn = null;
try {
conn = repo.getConnection();
HTTPTupleQuery query = (HTTPTupleQuery)conn.prepareTupleQuery(qInfo.getQueryLanguage(),
qInfo.getQueryString());
query.setIncludeInferred(qInfo.isIncludeInferred());
try {
queryResult = query.evaluate();
}
catch (HTTPQueryEvaluationException e) {
if (e.isCausedByMalformedQueryException()) {
throw e.getCauseAsMalformedQueryException();
}
else if (e.isCausedByRepositoryException()) {
throw e.getCauseAsRepositoryException();
}
else if (e.isCausedByIOException()) {
throw e.getCauseAsIOException();
}
else {
throw e;
}
}
}
catch (RepositoryException e) {
logger.info("Unable to process query", e);
errors.reject("repository.error");
}
catch (MalformedQueryException e) {
errors.rejectValue("queryString", "repository.query.error.malformed", new String[] { e.getMessage() }, "Malformed query");
}
catch (QueryEvaluationException e) {
errors.reject("repository.query.error.evaluation");
}
finally {
// FIXME: check to see where this connection gets closed
// if (conn != null) {
// try {
// conn.close();
// }
// catch (RepositoryException e) {
// e.printStackTrace();
// }
// }
}
if (errors.hasErrors()) {
result = showForm(request, response, errors, errors.getModel());
}
else {
@SuppressWarnings("unchecked")
Map<String, Object> model = errors.getModel();
model.put("bindingNames", queryResult.getBindingNames());
model.put("solutions", queryResult);
result = new ModelAndView(getSuccessView(), model);
}
return result;
}
}