hasstatement.java

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/*  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.model.URI;
import org.openrdf.model.Value;

import org.openrdf.sesame.sail.RdfSource;
import org.openrdf.sesame.sail.test.benchmark.model.BMStatement;
import org.openrdf.sesame.sail.test.benchmark.pools.RdfSourcePool;

/**
 * Tests performance of org.openrdf.sesame.sail.RdfSource.hasStatement.
 *
 * @author Peter van 't Hof
 * @version %I%, %G%
 */
public class HasStatement extends RdfSourceBMTestB {

/*-------------+
| Constructors |
+-------------*/
	/**
	 * Creates a new benchmark test which tests
	 * org.openrdf.sesame.sail.RdfSourcehasStatement.
	 *
	 * @param rdfSource RdfSource to test.
	 */
	public HasStatement(RdfSource rdfSource) {
		super("hasStatement", rdfSource);

		_needsPool = true;
	}

/*--------+
| Methods |
+--------*/
	// This method consists of two parts. See below.
	protected void _testA() {

		// Part one: query if a(!) statement exist.
		_startA();
		_hasStatement(null, null, null, true);
		_stopA();
		
		/* Part two: get all statements and query if any combination of subject,
		 * predicate, object of statement and wildcards exist.
		 */		
		Iterator i = _cutDown(RdfSourcePool.statements, 16).iterator();
		
		while (i.hasNext()) {
			BMStatement statement = (BMStatement)i.next();

			Resource subject = statement.getSubject();
			URI predicate = statement.getPredicate();
			Value object = statement.getObject();

			_startA();

			_hasStatement(subject, null, null, true);
			_hasStatement(null, predicate, null, true);
			_hasStatement(null, null, object, true);
			_hasStatement(subject, predicate, null, true);
			_hasStatement(subject, null, object, true);
			_hasStatement(null, predicate, object, true);
			_hasStatement(subject, predicate, object, true);

			_stopA(7);
		}
	}

	// This method consist of two parts. See below.
 	protected void _testB() {

		/* Part one: query if pattern consisting of values which does not exist
		 * and wildcards exist.
		 */
		_startB();

		_hasStatement(RdfSourcePool.noSubject, null, null, false);
		_hasStatement(null, RdfSourcePool.noPredicate, null, false);
		_hasStatement(null, null, RdfSourcePool.noObject, false);
		_hasStatement(RdfSourcePool.noSubject, RdfSourcePool.noPredicate, null, false);
		_hasStatement(RdfSourcePool.noSubject, null, RdfSourcePool.noObject, false);
		_hasStatement(null, RdfSourcePool.noPredicate, RdfSourcePool.noObject, false);
		_hasStatement(RdfSourcePool.noSubject, RdfSourcePool.noPredicate, RdfSourcePool.noObject, false);

		_stopB(7);

		/* Part two: query if pattern consisting of values which do not exist,
		 * existing values and wildcards exists.
		 */
		Iterator i = _cutDown(RdfSourcePool.statements, 8).iterator();

		while (i.hasNext()) {
			BMStatement statement = (BMStatement)i.next();

			Resource subject = statement.getSubject();
			URI predicate = statement.getPredicate();
			Value object = statement.getObject();

			_startB();
				
			_hasStatement(RdfSourcePool.noSubject, null, object, false);
			_hasStatement(RdfSourcePool.noSubject, predicate, null, false);		
			_hasStatement(RdfSourcePool.noSubject, predicate, object, false);		

			_hasStatement(subject, RdfSourcePool.noPredicate, object, false);
			_hasStatement(null, RdfSourcePool.noPredicate, object, false);			
			_hasStatement(subject, RdfSourcePool.noPredicate, null, false);			

			_hasStatement(subject, predicate, RdfSourcePool.noObject, false);
			_hasStatement(null, predicate, RdfSourcePool.noObject, false);
			_hasStatement(subject, null, RdfSourcePool.noObject, false);

			_hasStatement(RdfSourcePool.noSubject, RdfSourcePool.noPredicate, object, false);
			_hasStatement(RdfSourcePool.noSubject, predicate, RdfSourcePool.noObject, false);
			_hasStatement(subject, RdfSourcePool.noPredicate, RdfSourcePool.noObject, false);
		
			_stopB(12);
		}

		/* Part three: query if pattern consisting of statements who do not exist
		 * exists.
		 */
		Iterator j = _cutDown(RdfSourcePool.noStatements, 8).iterator();
		
		while (j.hasNext()) {
			BMStatement noStatement = (BMStatement)j.next();
			Resource subject = noStatement.getSubject();
			URI predicate = noStatement.getPredicate();
			Value object = noStatement.getObject();

			_startB();
			_hasStatement(subject, predicate, object, false);
			_stopB();
		}
	}	

	// Call to RdfSource. Checks if result is equal to expected result.
	protected void _hasStatement(
			Resource subject, URI predicate, Value object, boolean expected)
	{
		if (expected != _rdfSource.hasStatement(subject, predicate, object)) {
			_error(
				"hasStatement(" + new BMStatement(subject, predicate, object) +
				 ") should be " + expected + ".");
		}
	}

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