eventtest.java

drools 一个开放源码的规则引擎

package org.drools.reteoo;

/*
 * $Id: EventTest.java,v 1.4 2005/05/08 04:05:13 dbarnett Exp $
 *
 * Copyright 2004-2005 (C) The Werken Company. All Rights Reserved.
 *
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided that the
 * following conditions are met:
 *
 * 1. Redistributions of source code must retain copyright statements and
 * notices. Redistributions must also contain a copy of this document.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. The name "drools" must not be used to endorse or promote products derived
 * from this Software without prior written permission of The Werken Company.
 * For written permission, please contact [e-mail].
 *
 * 4. Products derived from this Software may not be called "drools" nor may
 * "drools" appear in their names without prior written permission of The Werken
 * Company. "drools" is a registered trademark of The Werken Company.
 *
 * 5. Due credit should be given to The Werken Company.
 * (http://drools.werken.com/).
 *
 * THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE WERKEN COMPANY OR ITS CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 */

import org.drools.DroolsTestCase;
import org.drools.FactHandle;
import org.drools.RuleBase;
import org.drools.TestWorkingMemoryEventListener;
import org.drools.rule.Declaration;
import org.drools.rule.Rule;
import org.drools.rule.RuleSet;
import org.drools.spi.InstrumentedCondition;
import org.drools.spi.MockObjectType;

/**
 * 
 * @author mproctor
 * 
 * @todo remove schedule items
 * @todo add/remove schedule items
 * 
 */

public class EventTest extends DroolsTestCase
{
    public void testAddToAgenda() throws Exception
    {
        RuleSet ruleSet = new RuleSet( "test rule-set" );
        Rule rule = new Rule( "test-rule" );

        // rule.addParameterDeclaration( intDecl );
        Declaration stringDecl1 = rule.addParameterDeclaration( "stringVar1",
                                                                new MockObjectType( String.class ) );
        Declaration stringDecl2 = rule.addParameterDeclaration( "stringVar2",
                                                                new MockObjectType( String.class ) );
        Declaration intDecl = rule.addParameterDeclaration( "intVar",
                                                            new MockObjectType( Integer.class ) );

        // add consequence
        rule.setConsequence( new org.drools.spi.Consequence( )
        {
            public void invoke(org.drools.spi.Tuple tuple)
            {
                // Agenda agenda =
                // ((WorkingMemoryImpl)workingMemory).getAgenda();
                // agenda.addToAgenda( ( ReteTuple ) tuple, tuple.getRule( ) );
                // System.err.println("fire");
            }
        } );
        // add condition
        InstrumentedCondition c1 = new InstrumentedCondition( );
        c1.addDeclaration( stringDecl1 );
        c1.isAllowed( true );
        InstrumentedCondition c2 = new InstrumentedCondition( );
        c2.addDeclaration( stringDecl2 );
        c2.isAllowed( true );
        InstrumentedCondition c3 = new InstrumentedCondition( );
        c3.addDeclaration( intDecl );
        c3.isAllowed( true );
        rule.addCondition( c1 );
        rule.addCondition( c2 );
        rule.addCondition( c3 );

        // rule.addCondition( new org.drools.spi.InstrumentedCondition( ) );
        ruleSet.addRule( rule );
        Builder builder = new Builder( );
        builder.addRuleSet( ruleSet );
        RuleBase ruleBase = builder.buildRuleBase( );

        WorkingMemoryImpl workingMemory = (WorkingMemoryImpl) ruleBase.newWorkingMemory( );
        TestWorkingMemoryEventListener listener = new TestWorkingMemoryEventListener( );
        workingMemory.addEventListener( listener );

        /*
         * This is not recursive so a rule should not be able to activate itself
         */

        assertEquals( 0,
                      listener.asserted );
        assertEquals( 0,
                      listener.tested );
        FactHandle stringFact1 = workingMemory.assertObject( "cheddar" );
        FactHandle stringFact2 = workingMemory.assertObject( "brie" );
        FactHandle intFact = workingMemory.assertObject( new Integer( 5 ) );
        assertEquals( 3,
                      listener.asserted );
        assertEquals( 5,
                      listener.tested );
        assertEquals( 4,
                      listener.created );
        assertEquals( 4,
                      workingMemory.getAgenda( ).size( ) );

        assertEquals( 0,
                      listener.fired );

        workingMemory.modifyObject( stringFact1,
                                    "stilton" );

        workingMemory.fireAllRules( );

        assertEquals( 4,
                      listener.fired );
        assertEquals( 0,
                      workingMemory.getAgenda( ).size( ) );

        assertEquals( 1,
                      listener.modified );
        assertEquals( 0,
                      listener.cancelled );

        workingMemory.modifyObject( stringFact1,
                                    "gouda" );

        assertEquals( 3,
                      workingMemory.getAgenda( ).size( ) );
        assertEquals( 0,
                      listener.cancelled );
        assertEquals( 2,
                      listener.modified );
        assertEquals( 9,
                      listener.tested );
        assertEquals( 7,
                      listener.created );
        assertEquals( 0,
                      listener.cancelled );
        workingMemory.clearAgenda( );
        assertEquals( 3,
                      listener.cancelled );

        assertEquals( 0,
                      listener.retracted );
        workingMemory.retractObject( stringFact2 );
        assertEquals( 1,
                      listener.retracted );
    }
}