issubpropertyof.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.util.Iterator;

import org.openrdf.model.Resource;

import org.openrdf.sesame.sail.RdfSchemaSource;
import org.openrdf.sesame.sail.test.benchmark.model.Binary;
import org.openrdf.sesame.sail.test.benchmark.pools.RdfSchemaSourcePool;

/**
 * Tests performance of org.openrdf.sesame.sail.RdfSchemaSource.isSubPropertyOf.
 *
 * @author Peter van 't Hof.
 * @version %I%, %G%
 */
public class IsSubPropertyOf extends RdfSchemaSourceBMTestB {

/*-------------+
| Constructors |
+-------------*/
	/**
	 * Creates a new benchmark test which tests
	 * org.openrdf.sesame.sail.RdfSchemaSource.isSubPropertyOf.
	 *
	 * @param rdfSchemaSource RdfSchemaSource to test.
	 */
	public IsSubPropertyOf(RdfSchemaSource rdfSchemaSource) {
		super("isSubPropertyOf", rdfSchemaSource);

		_needsPool = true;
	}

/*--------+
| Methods |
+--------*/
   	/* Queries if a subProperty which is a subProperty of superProperty is a
	 * subProperty of superProperty.
	 */
	protected void _testA() {
		Iterator i = _cutDown(RdfSchemaSourcePool.subPropertyOfRelations, 100).iterator();
		
		while (i.hasNext()) {
			Binary subPropertyOfRelation = (Binary)i.next();
			Resource subProperty = (Resource)subPropertyOfRelation.getLeft();
			Resource superProperty = (Resource)subPropertyOfRelation.getRight();			

			_startA();				
			_isSubPropertyOf(subProperty, superProperty, true);
			_stopA();
		}
	}

	protected void _testB() {
		// Part one: query if resources are a subProperty of eachother, pattern
		// consists of resources which do not exist, resources which do exist but
		// are no property and properties.
		Iterator noPropertiesIter = _cutDown(RdfSchemaSourcePool.noProperties, 100).iterator();
		Iterator propertiesIter = _cutDown(RdfSchemaSourcePool.properties, 100).iterator();

		while (noPropertiesIter.hasNext() && propertiesIter.hasNext()) {
			Resource noProperty = (Resource)noPropertiesIter.next();
			Resource propertyResource = (Resource)propertiesIter.next();
			
			_startB();

			_isSubPropertyOf(noProperty, RdfSchemaSourcePool.noSubject, false);
			_isSubPropertyOf(RdfSchemaSourcePool.noSubject, noProperty, false);
			_isSubPropertyOf(noProperty, noProperty, false);
			_isSubPropertyOf(propertyResource, RdfSchemaSourcePool.noSubject, false);
			_isSubPropertyOf(RdfSchemaSourcePool.noSubject, propertyResource, false);
			_isSubPropertyOf(noProperty, propertyResource, false);
			_isSubPropertyOf(propertyResource, noProperty, false);

			_stopB(7);
		}

		// Part two: query if subproperty which is NOT a subProperty of superProperty
		// is a subProperty of superProperty.
		Iterator i = _cutDown(RdfSchemaSourcePool.noSubPropertyOfRelations, 100).iterator();
		
		while (i.hasNext()) {
			Binary subPropertyOfRelation = (Binary)i.next();
			Resource subProperty = (Resource)subPropertyOfRelation.getLeft();
			Resource superProperty = (Resource)subPropertyOfRelation.getRight();

			_startB();
			_isSubPropertyOf(subProperty, superProperty, false);
			_stopB();
		}
	}

	protected void _isSubPropertyOf(
			Resource subProperty, Resource superProperty, boolean expected)
	{
		if (expected != _rdfSchemaSource.isSubPropertyOf(subProperty, superProperty)) {
			_error("isSubPropertyOf(" + subProperty + ", " + superProperty + ") should be " + expected);
		}
	}

	public String toString() {
		return _toString("True", "False");
	}
}