testknowledgebaseorrules.java

Mandarax是一个规则引擎的纯Java实现。它支持多类型的事实和基于反映的规则

/*
 * Copyright (C) 1999-2004 <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</a>
 *
 * 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 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 test.org.mandarax.reference;

import java.util.Iterator;

import org.mandarax.kernel.ClauseSetException;
import org.mandarax.kernel.Fact;
import org.mandarax.kernel.Rule;

/**
 * Testing generating clause set iterators for or rules saved in the knoweldge base.
 * @author <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</A>
 * @version 3.4 <7 March 05>
 * @since 1.3
 */
public class TestKnowledgeBaseOrRules extends TestKnowledgeBase {

	/**
	 * Constructor.
	 * @param aKnowledgeBase a knowledge base
	 */
	public TestKnowledgeBaseOrRules(org.mandarax.kernel.KnowledgeBase aKnowledgeBase) {
		super(aKnowledgeBase);
	}

	/**
	 * Run the test.
	 */
	public void testKnowledgeBase() {
		kb.removeAll();

		Fact prerequisite1 = Person.getFact("isFatherOf", "x", "y");
		Fact prerequisite2 = Person.getFact("isFatherOf", "y", "z");
		Fact conclusion = Person.getFact("isFatherOf", "u", "v");
		Rule orRule =
			(new org.mandarax.util.LogicFactorySupport()).orRule(prerequisite1, prerequisite2, conclusion);

		kb.add(orRule);
		int count = 0;
		try {
			for (Iterator it = kb.clauses(); it.hasNext();) {
				System.out.println(it.next());
				count = count + 1;
			}
		}
		catch (ClauseSetException x) {

			assertTrue(count == 2);
		}
	}
}