/*
* Copyright Aduna (http://www.aduna-software.com/) (c) 2008-2009.
*
* Licensed under the Aduna BSD-style license.
*/
package org.openrdf.http.server.resources;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.restlet.resource.ResourceException;
import org.openrdf.http.server.resources.helpers.TupleResultResource;
import org.openrdf.query.BindingSet;
import org.openrdf.query.impl.ListBindingSet;
import org.openrdf.result.ContextResult;
import org.openrdf.result.TupleResult;
import org.openrdf.result.impl.TupleResultImpl;
import org.openrdf.store.StoreException;
/**
* @author Arjohn Kampman
*/
public class ContextsResource extends TupleResultResource {
@Override
public TupleResult getTupleResult()
throws ResourceException
{
try {
List<String> columnNames = Arrays.asList("contextID");
List<BindingSet> contexts = new ArrayList<BindingSet>();
ContextResult iter = getConnection().getContextIDs();
try {
while (iter.hasNext()) {
contexts.add(new ListBindingSet(columnNames, iter.next()));
}
}
finally {
iter.close();
}
return new TupleResultImpl(columnNames, contexts);
}
catch (StoreException e) {
throw new ResourceException(e);
}
}
@Override
protected String getFilenamePrefix() {
return "contexts";
}
}