schedulertest.java

drools 一个开放源码的规则引擎

package org.drools.reteoo;
/*
 * $Id: SchedulerTest.java,v 1.5 2005/02/04 02:13:37 mproctor Exp $
 *
 * Copyright 2001-2003 (C) The Werken Company. All Rights Reserved.
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 * 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.
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 * from this Software without prior written permission of The Werken Company.
 * For written permission, please contact [e-mail].
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 * "drools" appear in their names without prior written permission of The Werken
 * Company. "drools" is a trademark of The Werken Company.
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 * AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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import java.util.HashMap;
import java.util.Map;

import org.drools.DroolsTestCase;
import org.drools.RuleBase;
import org.drools.WorkingMemory;
import org.drools.rule.FixedDuration;
import org.drools.rule.Rule;
import org.drools.spi.AsyncExceptionHandler;
import org.drools.spi.ConsequenceException;
import org.drools.spi.MockObjectType;

/**
 * @author mproctor
 */

public class SchedulerTest extends DroolsTestCase
{
    public void testScheduledActivation() throws Exception
    {
        RuleBase ruleBase = new RuleBaseImpl( new Rete( ) );

        WorkingMemoryImpl workingMemory = (WorkingMemoryImpl) ruleBase.newWorkingMemory( );
        final Scheduler scheduler = Scheduler.getInstance( );

        final Rule rule = new Rule( "test-rule" );
        final Map data = new HashMap( );

        rule.addParameterDeclaration( "paramVar",
                                      new MockObjectType( true ) );

        // add consequence
        rule.setConsequence( new org.drools.spi.Consequence( )
        {
            public void invoke(org.drools.spi.Tuple tuple)
            {
                data.put( "tested",
                          "yes" );
            }
        } );

        // add condition
        rule.addCondition( new org.drools.spi.InstrumentedCondition( ) );

        rule.setDuration( new FixedDuration( 1 ) );

        ReteTuple tuple = new ReteTuple( workingMemory );

        AgendaItem item = new AgendaItem( tuple,
                                          rule );

        assertNull( data.get( "tested" ) );

        // Schedule is for 1 second
        scheduler.scheduleAgendaItem( item,
                                      workingMemory );

        // sleep for 2 seconds
        Thread.sleep( 2000 );

        // now check for update
        assertEquals( "yes",
                      data.get( "tested" ) );
    }

    public void testExceptionHandler() throws Exception
    {
        RuleBase ruleBase = new RuleBaseImpl( new Rete( ) );

        WorkingMemoryImpl workingMemory = (WorkingMemoryImpl) ruleBase.newWorkingMemory( );
        final Scheduler scheduler = Scheduler.getInstance( );

        final Rule rule = new Rule( "test-rule" );

        rule.addParameterDeclaration( "paramVar",
                                      new MockObjectType( true ) );

        // add consequence
        rule.setConsequence( new org.drools.spi.Consequence( )
        {
            public void invoke(org.drools.spi.Tuple tuple) throws ConsequenceException
            {
                throw new ConsequenceException( "not enough cheese",
                                                rule );
            }
        } );

        // add condition
        rule.addCondition( new org.drools.spi.InstrumentedCondition( ) );

        rule.setDuration( new FixedDuration( 1 ) );

        ReteTuple tuple = new ReteTuple( workingMemory );

        AgendaItem item = new AgendaItem( tuple,
                                          rule );

        final Map data = new HashMap( );

        AsyncExceptionHandler handler = new AsyncExceptionHandler( )
        {
            public void handleException(WorkingMemory workingMemory,
                                        ConsequenceException exception)
            {
                data.put( "tested",
                          "yes" );
            }
        };
        workingMemory.setAsyncExceptionHandler( handler );

        assertNull( data.get( "tested" ) );

        // Schedule is for 1 second
        scheduler.scheduleAgendaItem( item,
                                      workingMemory );

        // sleep for 2 seconds
        Thread.sleep( 2000 );

        // now check for update
        assertEquals( "yes",
                      data.get( "tested" ) );
    }

}