Package org.drools.common

Examples of org.drools.common.InternalWorkingMemory


                       analysis );
       
        ( (MVELPredicateExpression) predicate.getPredicateExpression()).compile( (MVELDialectRuntimeData) pkgRegistry.getDialectRuntimeRegistry().getDialectData( "mvel" ) );

        final RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        final InternalWorkingMemory wm = (InternalWorkingMemory) ruleBase.newStatefulSession();

        final Cheese stilton = new Cheese( "stilton",
                                           10 );

        final Cheese cheddar = new Cheese( "cheddar",
                                           10 );
       
        MockLeftTupleSink sink = new MockLeftTupleSink();
       
        final InternalFactHandle f0 = (InternalFactHandle) wm.insert( cheddar );
        final InternalFactHandle f1 = (InternalFactHandle) wm.insert( stilton );
        final LeftTuple tuple = new LeftTuple( f0, sink, true );

        final PredicateContextEntry predicateContext = (PredicateContextEntry) predicate.createContextEntry();
        predicateContext.leftTuple = tuple;
        predicateContext.workingMemory = wm;

        assertTrue( predicate.isAllowedCachedLeft( predicateContext,
                                                   f1 ) );

        cheddar.setPrice( 9 );
        wm.update( f0,
                   cheddar );

        assertFalse( predicate.isAllowedCachedLeft( predicateContext,
                                                    f1 ) );
    }
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     * Test auto-deactivation of RuleFlowGroup.
     */
    public void testRuleFlowGroup4() {
        ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase();
        IdGenerator idGenerator = ruleBase.getReteooBuilder().getIdGenerator();
        final InternalWorkingMemory workingMemory = (InternalWorkingMemory) ruleBase.newStatefulSession();;

        final DefaultAgenda agenda = (DefaultAgenda) workingMemory.getAgenda();

        // create rule0
        final Consequence consequence0 = new Consequence() {
            private static final long serialVersionUID = 400L;

            public void evaluate(KnowledgeHelper knowledgeHelper,
                                 WorkingMemory w) {
                // do nothing
            }

            public void readExternal(ObjectInput in) throws IOException,
                                                    ClassNotFoundException {

            }

            public void writeExternal(ObjectOutput out) throws IOException {

            }
        };

        final Rule rule0 = new Rule( "test-rule0" );
        rule0.setRuleFlowGroup( "rule-flow-group-0" );
        rule0.setConsequence( consequence0 );

        final RuleTerminalNode node0 = new RuleTerminalNode( idGenerator.getNextId(),
                                                             new MockTupleSource( idGenerator.getNextId() ),
                                                             rule0,
                                                             rule0.getLhs(),
                                                             buildContext );

        final RuleFlowGroup ruleFlowGroup0 = agenda.getRuleFlowGroup( "rule-flow-group-0" );
        assertTrue( ruleFlowGroup0.isAutoDeactivate() );
        ruleFlowGroup0.setAutoDeactivate( false );
        assertFalse( ruleFlowGroup0.isAutoDeactivate() );

        // create context
        final PropagationContext context0 = new PropagationContextImpl( 0,
                                                                        PropagationContext.ASSERTION,
                                                                        rule0,
                                                                        null,
                                                                        null );

        // Create an activation for this rule
        final LeftTuple tuple0 = new LeftTuple( new DefaultFactHandle( 1,
                                                                       "cheese" ),
                                                null,
                                                true );
        node0.assertLeftTuple( tuple0,
                               context0,
                               workingMemory );

        // RuleFlowGroup should be populated, but the agenda shouldn't be
        assertEquals( 1,
                      ruleFlowGroup0.size() );
        assertEquals( 0,
                      agenda.agendaSize() );

        // Activate the RuleFlowGroup, the activations stay in the group, but
        // should now also be in the Agenda
        agenda.activateRuleFlowGroup( "rule-flow-group-0" );
        assertEquals( 1,
                      ruleFlowGroup0.size() );
        assertEquals( 1,
                      agenda.agendaSize() );

        // Execute activation
        agenda.fireNextItem( null );
        assertEquals( 0,
                      ruleFlowGroup0.size() );
        assertEquals( 0,
                      agenda.agendaSize() );
        assertTrue( ruleFlowGroup0.isActive() );

        // Set auto-deactivation status to true
        ruleFlowGroup0.setAutoDeactivate( true );
        assertTrue( ruleFlowGroup0.isAutoDeactivate() );
        assertFalse( ruleFlowGroup0.isActive() );

        // Add another activation and activate RuleFlowGroup again
        final LeftTuple tuple1 = new LeftTuple( new DefaultFactHandle( 1,
                                                                       "cheese" ),
                                                null,
                                                true );
        node0.assertLeftTuple( tuple1,
                               context0,
                               workingMemory );
        agenda.activateRuleFlowGroup( "rule-flow-group-0" );
        assertEquals( 1,
                      ruleFlowGroup0.size() );
        assertEquals( 1,
                      agenda.agendaSize() );
        assertTrue( ruleFlowGroup0.isActive() );

        // Execute the activation, the RuleFlowGroup should automatically deactivate
        agenda.fireNextItem( null );
        assertEquals( 0,
                      ruleFlowGroup0.size() );
        assertEquals( 0,
                      agenda.agendaSize() );
        workingMemory.executeQueuedActions();
        assertFalse( ruleFlowGroup0.isActive() );

        // A new activation should now be added to the RuleFlowGroup but not to the agenda
        final LeftTuple tuple2 = new LeftTuple( new DefaultFactHandle( 1,
                                                                       "cheese" ),
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        ruleBase.getAgendaGroupRuleTotals().put( "agendaGroup1",
                                                 new Integer( 10 ) );
        ruleBase.getAgendaGroupRuleTotals().put( "agendaGroup2",
                                                 new Integer( 1 ) );

        InternalWorkingMemory workingMemory = new ReteooWorkingMemory( 0,
                                                                       ruleBase );

        final DefaultAgenda agenda = (DefaultAgenda) workingMemory.getAgenda();

        final AgendaGroup agendaGroup1 = new ArrayAgendaGroup( "agendaGroup1",
                                                               ruleBase );
        agenda.addAgendaGroup( agendaGroup1 );
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        assertNull( key.getOtherFactHandle() );
    }

    public void testId() {
        final ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase();
        InternalWorkingMemory workingMemory = (InternalWorkingMemory) ruleBase.newStatefulSession();
        assertEquals( 0,
                      workingMemory.getId() );
        workingMemory = (InternalWorkingMemory) ruleBase.newStatefulSession();
        assertEquals( 1,
                      workingMemory.getId() );
    }
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                 "value1" );
        map.put( "global2",
                 "value2" );
        final GlobalResolver resolver = new MapGlobalResolver(map);
        final ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase();
        final InternalWorkingMemory workingMemory = (InternalWorkingMemory) ruleBase.newStatefulSession();
        workingMemory.setGlobalResolver( resolver );
        assertEquals( "value1",
                      workingMemory.getGlobal( "global1" ) );
        assertEquals( "value2",
                      workingMemory.getGlobal( "global2" ) );
    }
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    public void attach(final InternalWorkingMemory[] workingMemories) {
        attach();

        for ( int i = 0, length = workingMemories.length; i < length; i++ ) {
            final InternalWorkingMemory workingMemory = workingMemories[i];
            final PropagationContext propagationContext = new PropagationContextImpl( workingMemory.getNextPropagationIdCounter(),
                                                                                      PropagationContext.RULE_ADDITION,
                                                                                      null,
                                                                                      null,
                                                                                      null );
            this.objectSource.updateSink( this,
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    public void attach(final InternalWorkingMemory[] workingMemories) {
        attach();

        for ( int i = 0, length = workingMemories.length; i < length; i++ ) {
            final InternalWorkingMemory workingMemory = workingMemories[i];
            final PropagationContext propagationContext = new PropagationContextImpl( workingMemory.getNextPropagationIdCounter(),
                                                                                      PropagationContext.RULE_ADDITION,
                                                                                      null,
                                                                                      null,
                                                                                      null );
            this.tupleSource.updateSink( this,
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    public void attach(final InternalWorkingMemory[] workingMemories) {
        attach();

        for ( int i = 0, length = workingMemories.length; i < length; i++ ) {
            final InternalWorkingMemory workingMemory = workingMemories[i];
            final PropagationContext propagationContext = new PropagationContextImpl( workingMemory.getNextPropagationIdCounter(),
                                                                                      PropagationContext.RULE_ADDITION,
                                                                                      null,
                                                                                      null,
                                                                                      null );
            this.tupleSource.updateSink( this,
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    protected void doRemove(final RuleRemovalContext context,
                            final ReteooBuilder builder,
                            final BaseNode node,
                            final InternalWorkingMemory[] workingMemories) {
        for ( int i = 0, length = workingMemories.length; i < length; i++ ) {
            final InternalWorkingMemory workingMemory = workingMemories[i];

            final TerminalNodeMemory memory = (TerminalNodeMemory) workingMemory.getNodeMemory( this );
            final Iterator it = memory.getTupleMemory().iterator();
            for ( LeftTuple leftTuple = (LeftTuple) it.next(); leftTuple != null; leftTuple = (LeftTuple) it.next() ) {
                final Activation activation = leftTuple.getActivation();

                if ( activation.isActivated() ) {
                    activation.remove();
                    ((EventSupport) workingMemory).getAgendaEventSupport().fireActivationCancelled( activation,
                                                                                                    workingMemory,
                                                                                                    ActivationCancelledCause.CLEAR );
                }

                final PropagationContext propagationContext = new PropagationContextImpl( workingMemory.getNextPropagationIdCounter(),
                                                                                          PropagationContext.RULE_REMOVAL,
                                                                                          null,
                                                                                          null,
                                                                                          null );
                workingMemory.getTruthMaintenanceSystem().removeLogicalDependencies( activation,
                                                                                     propagationContext,
                                                                                     this.rule );
                leftTuple.unlinkFromLeftParent();
                leftTuple.unlinkFromRightParent();
            }

            workingMemory.executeQueuedActions();
            workingMemory.clearNodeMemory( this );
        }

        if ( !context.alreadyVisited( this.tupleSource ) ) {
            this.tupleSource.remove( context,
                                     builder,
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            session.endBatchExecution();
        }
    }

    public void execute(Object object) {
        InternalWorkingMemory wm = newWorkingMemory();

        wm.insert( object );
        wm.fireAllRules( this.agendaFilter );
    }
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