rdfrepositorytest.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;

import junit.framework.TestCase;

import org.openrdf.model.URI;
import org.openrdf.model.impl.URIImpl;

/**
 * A JUnit test for testing the methods of RdfRepository.
 *
 * @author Jeen Broekstra
 * @author Arjohn Kampman
 */
public abstract class RdfRepositoryTest extends TestCase implements SailChangedListener {

/*-------------------------------+
| Constants                      |
+-------------------------------*/

	private static String SCHEMA1_URL = "http://www.icom.com/schema.rdf";
/*
	private static String SCHEMA1_FILE = "/files/museum/schema1.rdf";

	private static String SCHEMA2_FILE = "/files/museum/schema2.rdf";
	private static String SCHEMA2_URL = "http://www.oclc.org/schema.rdf";

	private static String CULTURE_FILE = "/files/museum/culture.rdf";
	private static String CULTURE_URL = "";

	private static String CLOSURE_FILE = "/files/museum/fullclosure.rdf";
	private static String CLOSURE_URL = "";
*/

	private static URI CUBIST = new URIImpl(SCHEMA1_URL + "#", "Cubist");
	private static URI PAINTER = new URIImpl(SCHEMA1_URL + "#", "Painter");
	private static URI PAINTS = new URIImpl(SCHEMA1_URL + "#", "paints");
	private static URI CREATES = new URIImpl(SCHEMA1_URL + "#", "creates");
	private static URI ARTIST = new URIImpl(SCHEMA1_URL + "#", "Artist");
	private static URI ARTIFACT = new URIImpl(SCHEMA1_URL + "#", "Artifact");
	private static URI PAINTING = new URIImpl(SCHEMA1_URL + "#", "Painting");

	private static URI PICASSO = new URIImpl("http://www.european-history.com/picasso.html");
	private static URI GUERNICA = new URIImpl("http://www.european-history.com/jpg/guernica03.jpg");

/*-------------------------------+
| Variables                      |
+-------------------------------*/

	private RdfRepository _repository;

	private int _removedEvents;
	private int _addedEvents;
	
/*-------------------------------+
| Constructors                   |
+-------------------------------*/

	public RdfRepositoryTest(String name) {
		super(name);
	}

/*-------------------------------+
| Methods                        |
+-------------------------------*/

	protected void setUp() {
		try {
			// Create and initialize _repository
			_repository = _getTestRepository();
			
			// set self as listener
			_repository.addListener(this);
		}
		catch (SailInitializationException e) {
			fail("unable to initialize repository: " + e.getMessage());
		}
	}

	protected void tearDown() {
		_repository.shutDown();
		_repository = null; 
	}

	/**
	 * Gets an instance of the RdfRepository that should be tested. The
	 * returned repository should already have been initialized.
	 *
	 * @return an initialized RdfRepository.
	 * @exception SailInitializationException If the initialization of the
	 * repository failed.
	 **/
	protected abstract RdfRepository _getTestRepository()
		throws SailInitializationException;

/*-------------------------+
| test methods             |
+-------------------------*/

	public void testAllMethods() {
		try {
			// repository should be empty
			StatementIterator statIter = _repository.getStatements(null, null, null);
			assertFalse(
					"Empty repository should not return any statements",
					statIter.hasNext());

			// Add some data to the repository
			_repository.startTransaction();
			_repository.addStatement(PAINTER, URIImpl.RDF_TYPE, URIImpl.RDFS_CLASS);
			_repository.addStatement(PICASSO, URIImpl.RDF_TYPE, PAINTER);
			_repository.addStatement(PAINTING, URIImpl.RDF_TYPE, URIImpl.RDFS_CLASS);
			_repository.addStatement(GUERNICA, URIImpl.RDF_TYPE, PAINTING);
			_repository.addStatement(PICASSO, PAINTS, GUERNICA);
			_repository.commitTransaction();

			// Check for presence of the added statements
			assertTrue(
					"Statement (Painter, type, Class) should be in the repository",
					_repository.hasStatement(PAINTER, URIImpl.RDF_TYPE, URIImpl.RDFS_CLASS));
			assertTrue(
					"Statement (picasso, type, Painter) should be in the repository",
					_repository.hasStatement(PICASSO, URIImpl.RDF_TYPE, PAINTER));
			assertTrue(
					"Statement (Painting, type, Class) should be in the repository",
					_repository.hasStatement(PAINTING, URIImpl.RDF_TYPE, URIImpl.RDFS_CLASS));
			assertTrue(
					"Statement (guernica, type, Painting) should be in the repository",
					_repository.hasStatement(GUERNICA, URIImpl.RDF_TYPE, PAINTING));
			assertTrue(
					"Statement (picasso, paints, geurnica) should be in the repository",
					_repository.hasStatement(PICASSO, PAINTS, GUERNICA));

			// Check for absense of non-added statements
			assertFalse(
					"Statement (Painter, paints, Painting) should not be in the repository",
					_repository.hasStatement(PAINTER, PAINTS, PAINTING));
			assertFalse(
					"Statement (Painter, paints, Painting) should not be in the repository",
					_repository.hasStatement(PICASSO, CREATES, GUERNICA));

			// repository should contain 5 statements in total
			statIter = _repository.getStatements(null, null, null);
			int statCount = _countStatements(statIter);
			assertEquals(
					"Repository should contain 5 statements in total",
					5, statCount);

			// repository should contain 2 statements with picasso as subject
			statIter = _repository.getStatements(PICASSO, null, null);
			statCount = _countStatements(statIter);
			assertEquals(
					"Repository should contain 2 statements with picasso as subject",
					2, statCount);

			// repository should contain 1 statements with picasso as subject
			// and paints as predicate
			statIter = _repository.getStatements(PICASSO, PAINTS, null);
			statCount = _countStatements(statIter);
			assertEquals(
					"Repository should contain 1 statements with picasso as subject " +
					"and paints as predicate",
					1, statCount);

			// repository should contain 4 statements with rdf:type as predicate
			statIter = _repository.getStatements(null, URIImpl.RDF_TYPE, null);
			statCount = _countStatements(statIter);
			assertEquals(
					"Repository should contain 4 statements with paints as predicate",
					4, statCount);

			// repository should contain 2 statements with rdfs:Class as object
			statIter = _repository.getStatements(null, null, URIImpl.RDFS_CLASS);
			statCount = _countStatements(statIter);
			assertEquals(
					"Repository should contain 2 statements with rdfs:Class as object",
					2, statCount);

			// repository should contain 0 statements with rdf:type as object
			statIter = _repository.getStatements(null, null, URIImpl.RDF_TYPE);
			statCount = _countStatements(statIter);
			assertEquals(
					"Repository should contain 0 statements with rdf:type as object",
					0, statCount);

			// Test removal of statements
			int removeCount = 0;

			_repository.startTransaction();
			removeCount = _repository.removeStatements(PAINTING, URIImpl.RDF_TYPE, URIImpl.RDFS_CLASS);
			_repository.commitTransaction();

			assertEquals(
					"Exactly 1 statement should have been removed",
					1, removeCount);

			assertFalse(
					"Statement (Painting, type, Class) should no longer be in the repository",
					_repository.hasStatement(PAINTING, URIImpl.RDF_TYPE, URIImpl.RDFS_CLASS));

			_repository.startTransaction();
			removeCount = _repository.removeStatements(null, URIImpl.RDF_TYPE, URIImpl.RDFS_CLASS);
			_repository.commitTransaction();

			assertEquals(
					"Exactly 1 statement should have been removed",
					1, removeCount);

			assertFalse(
					"No statement matching (null, type, Class) should be in the repository",
					_repository.hasStatement(null, URIImpl.RDF_TYPE, URIImpl.RDFS_CLASS));

			_repository.startTransaction();
			removeCount = _repository.removeStatements(null, URIImpl.RDF_TYPE, null);
			_repository.commitTransaction();

			assertEquals(
					"Exactly 2 statement should have been removed",
					2, removeCount);

			assertFalse(
					"No statement matching (null, type, null) should be in the repository",
					_repository.hasStatement(null, URIImpl.RDF_TYPE, null));

			_repository.startTransaction();
			removeCount = _repository.removeStatements(null, null, URIImpl.RDFS_CLASS);
			_repository.commitTransaction();

			assertEquals(
					"No statements should have been removed",
					0, removeCount);

			// only one statements should be left
			statIter = _repository.getStatements(null, null, null);
			statCount = _countStatements(statIter);
			assertEquals(
					"Repository should contain 1 statements in total",
					1, statCount);

			assertTrue(
					"Statement (picasso, paints, guernica) should still be in the repository",
					_repository.hasStatement(PICASSO, PAINTS, GUERNICA));

			_repository.startTransaction();
			_repository.clearRepository();
			_repository.commitTransaction();

			// Statement should be empty again
			statIter = _repository.getStatements(null, null, null);
			statCount = _countStatements(statIter);
			assertEquals(
					"Repository should contain 0 statements",
					0, statCount);
			
			// test if event listener works properly.
			
			// one add event should have registered.
			assertEquals("There should have been 1 event in which statements were added", 1, _addedEvents);
			
			// four (not five since one of the removes makes no change!) 
			// removal events should have registered.
			assertEquals("There should have been 4 events in which statements were removed", 4, _removedEvents);
			
		}
		catch (SailUpdateException e) {
			fail("Unable to add statement: " + e.getMessage());
		}
	}
	
	public void sailChanged(SailChangedEvent event) {
		if (event.statementsRemoved()) {
			_removedEvents++;
		}
		if (event.statementsAdded()) {
			_addedEvents++;
		}
	}

	protected int _countStatements(StatementIterator statIter) {
		int statCount = 0;
		while (statIter.hasNext()) {
			statIter.next();
			statCount++;
		}
		statIter.close();
		return statCount;
	}
}