// Copyright (c) 2006 - 2008, Clark & Parsia, LLC. <http://www.clarkparsia.com>
// This source code is available under the terms of the Affero General Public License v3.
//
// Please see LICENSE.txt for full license terms, including the availability of proprietary exceptions.
// Questions, comments, or requests for clarification: licensing@clarkparsia.com
package com.clarkparsia.pellet.sparqldl.jena;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import com.hp.hpl.jena.query.QuerySolution;
import com.hp.hpl.jena.query.ResultSet;
import com.hp.hpl.jena.query.SortCondition;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.sparql.core.ResultBinding;
import com.hp.hpl.jena.sparql.engine.binding.Binding;
import com.hp.hpl.jena.sparql.engine.binding.BindingComparator;
/**
* <p>
* Title:
* </p>
* <p>
* Description:
* </p>
* <p>
* Copyright: Copyright (c) 2007
* </p>
* <p>
* Company: Clark & Parsia, LLC. <http://www.clarkparsia.com>
* </p>
*
* @author Evren Sirin
*/
public class SortedResultSet implements ResultSet {
private List<Binding> sortedRows;
private Iterator<Binding> iterator;
private int row;
private List<String> resultVars;
@SuppressWarnings("unchecked")
public SortedResultSet(ResultSet results, List<SortCondition> sortConditions) {
resultVars = results.getResultVars();
sortedRows = new ArrayList<Binding>();
while( results.hasNext() ) {
sortedRows.add( results.nextBinding() );
}
BindingComparator cmp = new BindingComparator( sortConditions );
Collections.sort( sortedRows, cmp );
iterator = sortedRows.iterator();
row = 0;
}
/**
* {@inheritDoc}
*/
public List<String> getResultVars() {
return resultVars;
}
/**
* {@inheritDoc}
*/
public int getRowNumber() {
return row;
}
/**
* {@inheritDoc}
*/
public boolean hasNext() {
return iterator.hasNext();
}
/**
* {@inheritDoc}
*/
public boolean isOrdered() {
return true;
}
/**
* {@inheritDoc}
*/
public QuerySolution next() {
return nextSolution();
}
/**
* {@inheritDoc}
*/
public Binding nextBinding() {
return iterator.next();
}
/**
* {@inheritDoc}
*/
public QuerySolution nextSolution() {
return new ResultBinding( null, nextBinding() );
}
/**
* {@inheritDoc}
*/
public void remove() {
throw new UnsupportedOperationException();
}
/**
* {@inheritDoc}
*/
public String toString() {
return sortedRows.toString();
}
public Model getResourceModel() {
return null;
}
}