query.java

这是外国一个开源推理机

/*  Sesame - Storage and Querying architecture for RDF and RDF Schema
 *  Copyright (C) 2001-2005 Aduna
 *
 *  Contact: 
 *  	Aduna
 *  	Prinses Julianaplein 14 b
 *  	3817 CS Amersfoort
 *  	The Netherlands
 *  	tel. [phone]
 *  	fax. [phone]
 *
 *  	http://aduna.biz/
 *  	http://www.openrdf.org/
 *  
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package org.openrdf.sesame.sail.test.benchmark.tests;

import java.io.IOException;

import org.openrdf.util.log.ThreadLog;

import org.openrdf.sesame.query.MalformedQueryException;
import org.openrdf.sesame.query.QueryEvaluationException;
import org.openrdf.sesame.query.rql.RqlEngine;
import org.openrdf.sesame.query.rql.parser.ParseException;
import org.openrdf.sesame.sail.RdfSchemaSource;
import org.openrdf.sesame.sail.test.benchmark.listeners.BMResultListener;

/**
 * Tests performance of a query.
 *
 * @author Peter van 't Hof.
 * @version %I%, %G%
 */
public class Query extends RdfSchemaSourceBMTestA {

/*-------------+
| Constructors |
+-------------*/
	/**
	 * Creates a new benchmark test which tests a query.
	 *
	 * @param query Query to test.
	 * @param rdfSchemaSource RdfSchemaSource to test.
	 */
	public Query(String query, RdfSchemaSource rdfSchemaSource) {
		super(query, rdfSchemaSource);
	}

/*--------+
| Methods |
+--------*/
	protected void _test() 
		throws ParseException, IOException, QueryEvaluationException
	{
		try {
			RqlEngine queryEngine = new RqlEngine(_rdfSchemaSource);

			// Suppress traces.
			ThreadLog.registerThread(null, 0);	
			
			org.openrdf.sesame.query.rql.model.Query parsedQuery = 
				queryEngine.parseQuery(_name);
			
			_start();
			
			queryEngine.evaluateQuery(parsedQuery, new BMResultListener());
		
			// Show traces.
			ThreadLog.registerThread(null, 5);	
			
			_stop();
			
			_testDone = true;
		}
		catch (MalformedQueryException e) {
			_exit("Query " + _name + " malformed.");
		}
	}

	public String toString() {
		return _name + "\nTotal time(ms)\t " + getTime();
	}
}