Examples of org.drools.rule.Rule

org.drools.rule.Rule
A Rule contains a set of Conditions and a Consequence.
The Conditions describe the circumstances that representrepresent a match for this rule. The Consequence gets fired when the Conditions match. @see Condition @see Consequence @author bob mcwhirter @author Simon Harris @author mark pro

            {
            }
        };
        
                
        Rule rule1 = new Rule( "rule1" );
        rule1.setSalience( 50 );
        rule1.setXorGroup( "group1" );


        /* this rule should fire first and be the only rule to fire */
        Rule rule2 = new Rule( "rule2" );
        rule2.setConsequence( consequence );
        rule2.setXorGroup( "group1" );
        rule2.setSalience( 100 );
        
        Rule rule3 = new Rule( "rule3" );
        rule3.setDuration( 1000 );
        rule3.setSalience( 40 );        
        rule3.setXorGroup( "group1" );
        
        Rule rule4 = new Rule( "rule4" );
        rule4.setSalience( 30 );        
        rule4.setXorGroup( "group2" );      
        
        Rule rule5 = new Rule( "rule5" );
        rule4.setSalience( 20 );
        rule5.setXorGroup( null );                               


        ReteTuple tuple = new ReteTuple( workingMemory );




        agenda.addToAgenda( tuple,

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        RuleBase ruleBase = new RuleBaseImpl( new Rete( ) );


        WorkingMemoryImpl workingMemory = (WorkingMemoryImpl) ruleBase.newWorkingMemory( );
        final Agenda agenda = workingMemory.getAgenda( );


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


        // add consequence
        rule.setConsequence( new org.drools.spi.Consequence( )
        {
            public void invoke(org.drools.spi.Tuple tuple)
            {
                agenda.addToAgenda( (ReteTuple) tuple,
                                    rule );
            }
        } );


        ReteTuple tuple = new ReteTuple( workingMemory );


        assertEquals( 0,
                      agenda.size( ) );


        /*
         * Add to agenda
         */
        rule.setNoLoop( false );
        agenda.addToAgenda( tuple,
                            rule );
        assertEquals( 1,
                      agenda.size( ) );
        agenda.fireNextItem( null );
        assertEquals( 1,
                      agenda.size( ) );
        agenda.clearAgenda( );


        /*
         * True filter, activations should always add
         */
        AgendaFilter filterTrue = new AgendaFilter( )
        {
            public boolean accept(Activation item)
            {
                return true;
            }
        };
        rule.setNoLoop( false );
        agenda.addToAgenda( tuple,
                            rule );
        assertEquals( 1,
                      agenda.size( ) );
        agenda.fireNextItem( filterTrue );
        assertEquals( 1,
                      agenda.size( ) );
        agenda.clearAgenda( );


        /*
         * False filter, activations should always be denied
         */
        AgendaFilter filterFalse = new AgendaFilter( )
        {
            public boolean accept(Activation item)
            {
                return false;
            }
        };
        rule.setNoLoop( false );
        agenda.addToAgenda( tuple,
                            rule );
        assertEquals( 1,
                      agenda.size( ) );
        agenda.fireNextItem( filterFalse );

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        RuleBase ruleBase = new RuleBaseImpl( new Rete( ) );


        WorkingMemoryImpl workingMemory = (WorkingMemoryImpl) ruleBase.newWorkingMemory( );
        final Agenda agenda = workingMemory.getAgenda( );


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


        // add consequence
        rule.setConsequence( new org.drools.spi.Consequence( )
        {
            public void invoke(org.drools.spi.Tuple tuple)
            {
                WorkingMemory workingMemory = tuple.getWorkingMemory( );


                agenda.addToAgenda( (ReteTuple) tuple,
                                    rule );
                workingMemory.clearAgenda( );
            }
        } );


        ReteTuple tuple = new ReteTuple( workingMemory );


        assertEquals( 0,
                      agenda.size( ) );


        /*
         * This is recursive so a rule should be able to activate itself But
         * then we clear the agenda afterwards to size should still be 0
         */
        rule.setNoLoop( false );
        agenda.addToAgenda( tuple,
                            rule );
        assertEquals( 1,
                      agenda.size( ) );
        agenda.fireNextItem( null );

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public class RuleIntegrationExceptionTest extends TestCase
{
    public void testConstruct()
    {
        Rule rule = new Rule( "cheese" );


        RuleIntegrationException e = new RuleIntegrationException( rule );


        assertSame( rule, e.getRule( ) );

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    }


    public void testLiteralConstraintAssertObjectWithoutMemory() throws Exception
    {
        WorkingMemoryImpl workingMemory = new WorkingMemoryImpl( new RuleBaseImpl( new Rete() ) );
        Rule rule = new Rule( "test-rule" );
        PropagationContext context = new PropagationContextImpl( PropagationContext.ASSERTION,
                                                             null,
                                                             null );


        MockObjectSource source = new MockObjectSource( 15 );

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    }


    public void testLiteralConstraintAssertObjectWithMemory() throws Exception
    {
        WorkingMemoryImpl workingMemory = new WorkingMemoryImpl( new RuleBaseImpl( new Rete() ) );
        Rule rule = new Rule( "test-rule" );
        PropagationContext context = new PropagationContextImpl( PropagationContext.ASSERTION,
                                                             null,
                                                             null );


        MockObjectSource source = new MockObjectSource( 15 );

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     * dont need to test with and without memory on this, as it was already done on the previous two tests. This just test AlphaNode With a different Constraint type.
     */
    public void testReturnValueConstraintAssertObject() throws Exception
    {
        WorkingMemoryImpl workingMemory = new WorkingMemoryImpl( new RuleBaseImpl( new Rete() ) );
        Rule rule = new Rule( "test-rule" );
        PropagationContext context = new PropagationContextImpl( PropagationContext.ASSERTION,
                                                             null,
                                                             null );


        MockObjectSource source = new MockObjectSource( 15 );

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    }


    public void testRetractObjectWithoutMemory() throws Exception
    {
        WorkingMemoryImpl workingMemory = new WorkingMemoryImpl( new RuleBaseImpl( new Rete() ) );
        Rule rule = new Rule( "test-rule" );
        PropagationContext context = new PropagationContextImpl( PropagationContext.ASSERTION,
                                                             null,
                                                             null );


        MockObjectSource source = new MockObjectSource( 15 );

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    }


    public void testRetractObjectWithMemory() throws Exception
    {
        WorkingMemoryImpl workingMemory = new WorkingMemoryImpl( new RuleBaseImpl( new Rete() ) );
        Rule rule = new Rule( "test-rule" );
        PropagationContext context = new PropagationContextImpl( PropagationContext.ASSERTION,
                                                             null,
                                                             null );


        MockObjectSource source = new MockObjectSource( 15 );

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        RuleBase ruleBase = new RuleBaseImpl( new Rete() );


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


        final Rule rule = new Rule( "test-rule" );
        final List data = new ArrayList();


        // add consequence
        rule.setConsequence( new org.drools.spi.Consequence()
        {
            public void invoke(Activation activation)
            {
                data.add( "tested" );
            }
        } );


        /* 1/10th of a second */
        Duration duration = new Duration()
        {
            public long getDuration(Tuple tuple)
            {
                return 100;
            }


        };
        rule.setDuration( duration );


        PropagationContext context = new PropagationContextImpl( PropagationContext.ASSERTION,
                                                                 null,
                                                                 null );

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