testcut7.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;



/**
 * Test case for cut.
 * R(x) :- A(x),B(x)
 * A(x) :- !,B(x)
 * A(x) :- C(x)
 * B(b)
 * C(c)
 * The expected result is {b}.
 * @author <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</A>
 * @version 3.4 <7 March 05>
 * @since 2.1
 */
public class TestCut7 extends TestCut {
	/**
	 * @see test.org.mandarax.reference.cut.TestCut#feedKnowledgeBase(KnowledgeBase)
	 */
	public void feedKnowledgeBase(org.mandarax.kernel.KnowledgeBase knowledge) {
		kb.add(
			lfs.rule(
				this.prereq2("A","x"),
				this.prereq2("B","x"),				
				this.fact2("R","x")
			)
		);
		kb.add(
			lfs.rule(
				this.cut(),
				this.prereq2("B","x"),				
				this.fact2("A","x")
			)
		);
		kb.add(
			lfs.rule(
				this.prereq2("C","x"),		
				this.fact2("A","x")
			)
		);
		kb.add(this.fact1("B","b"));
		kb.add(this.fact1("C","c"));
	}


	/**
	 * Get the expected results.
	 * @return an array of expected results.
	 */
	protected String[] getExpectedResults() {
		return new String[]{"b"};
	}
	/**
	 * Convert the object to a string.
	 * @return a string
	 */
	public String toString() {
		return "Test case for cut 7";
	}

}