Examples of org.drools.spi.Activation

org.drools.spi.Activation
A Rule activation for the purposes of conflict resolution. @author bob mcwhirter @version $Id: Activation.java,v 1.6 2004/12/06 01:30:37 dbarnett Exp $

                                      ProtobufMessages.BeliefSet _beliefSet) throws IOException,
                                                                            ClassNotFoundException {
        InternalFactHandle handle = (InternalFactHandle) context.handles.get( _beliefSet.getHandleId() );
        for ( ProtobufMessages.LogicalDependency _logicalDependency : _beliefSet.getLogicalDependencyList() ) {
            ProtobufMessages.Activation _activation = _logicalDependency.getActivation();
            Activation activation = (Activation) context.filter.getTuplesCache().get(
                                                                                      PersisterHelper.createActivationKey( _activation.getPackageName(),
                                                                                                                           _activation.getRuleName(),
                                                                                                                           _activation.getTuple() ) ).getObject();


            Object object = null;
            ObjectMarshallingStrategy strategy = null;
            if ( _logicalDependency.hasObjectStrategyIndex() ) {
                strategy = context.usedStrategies.get( _logicalDependency.getObjectStrategyIndex() );
                object = strategy.unmarshal( context.strategyContexts.get( strategy ),
                                             context,
                                             _logicalDependency.getObject().toByteArray(),
                                             (context.ruleBase == null) ? null : context.ruleBase.getRootClassLoader() );
            }


            Object value = null;
            if ( _logicalDependency.hasValueStrategyIndex() ) {
                strategy = context.usedStrategies.get( _logicalDependency.getValueStrategyIndex() );
                value = strategy.unmarshal( context.strategyContexts.get( strategy ),
                                            context,
                                            _logicalDependency.getValue().toByteArray(),
                                            (context.ruleBase == null) ? null : context.ruleBase.getRootClassLoader() );
            }


            ObjectTypeConf typeConf = context.wm.getObjectTypeConfigurationRegistry().getObjectTypeConf( ((NamedEntryPoint) handle.getEntryPoint()).getEntryPoint(),
                                                                                                         handle.getObject() );
            tms.readLogicalDependency( handle,
                                       object,
                                       value,
                                       activation,
                                       activation.getPropagationContext(),
                                       activation.getRule(),
                                       typeConf );
        }
    }

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        assertEquals( 3,
                      created.size() );
        assertEquals( 0,
                      cancelled.size() );


        final Activation item = ((ActivationCreatedEvent) created.get( 2 )).getActivation();


        // simulate a modify inside a consequence
        wm.update( stiltonHandle,
                   stilton,
                   item.getRule(),
                   item );


        // the two of the three tuples should re-activate
        assertEquals( 5,
                      created.size() );

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    }


    public void retractLeftTuple(final LeftTuple leftTuple,
                                 final PropagationContext context,
                                 final InternalWorkingMemory workingMemory) {
        final Activation activation = (Activation) leftTuple.getObject();


        // activation can be null if the LeftTuple previous propagated into a no-loop
        if ( activation == null ) {
            return;
        }


        if ( activation.isActivated() ) {
            // on fact expiration, we don't remove the activation, but let it fire
            if ( context.getType() == PropagationContext.EXPIRATION && context.getFactHandleOrigin() != null ) {
                EventFactHandle efh = (EventFactHandle) context.getFactHandleOrigin();
                efh.increaseActivationsCount();
            } else {
                activation.remove();


                if ( activation.getActivationGroupNode() != null ) {
                    activation.getActivationGroupNode().getActivationGroup().removeActivation( activation );
                }


                if ( activation.getActivationNode() != null ) {
                    final InternalRuleFlowGroup ruleFlowGroup = (InternalRuleFlowGroup) activation.getActivationNode().getParentContainer();
                    ruleFlowGroup.removeActivation( activation );
                }


                ((EventSupport) workingMemory).getAgendaEventSupport().fireActivationCancelled( activation,
                                                                                                workingMemory,

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                            final InternalWorkingMemory workingMemory) {
            if ( leftTuple.getLeftTupleSink() != node ) {
                return;
            }


            final Activation activation = (Activation) leftTuple.getObject();


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

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    public void clearAndCancelActivationGroup(final ActivationGroup activationGroup) {
        final EventSupport eventsupport = (EventSupport) this.workingMemory;


        for ( final Iterator it = activationGroup.iterator(); it.hasNext(); ) {
            final ActivationGroupNode node = (ActivationGroupNode) it.next();
            final Activation activation = node.getActivation();
            activation.setActivationGroupNode( null );


            if ( activation.isActivated() ) {
                activation.setActivated( false );
                activation.remove();


                if ( activation.getActivationNode() != null ) {
                    final InternalRuleFlowGroup ruleFlowGroup = (InternalRuleFlowGroup) activation.getActivationNode().getParentContainer();
                    ruleFlowGroup.removeActivation( activation );
                }


                eventsupport.getAgendaEventSupport().fireActivationCancelled( activation,
                                                                              this.workingMemory,

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                                               long processInstanceId) {


        RuleFlowGroup systemRuleFlowGroup = this.getRuleFlowGroup( ruleflowGroupName );


        for ( Iterator<ActivationNode> activations = systemRuleFlowGroup.iterator(); activations.hasNext(); ) {
            Activation activation = activations.next().getActivation();
            if ( ruleName.equals( activation.getRule().getName() ) ) {
                if ( checkProcessInstance( activation,
                                           processInstanceId ) ) {
                    return true;
                }
            }

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        list.add( new LinkedListEntry( activation ) );
    }


    public Activation getNext() {
        Activation activation = null;
        while ( this.index <= lastIndex ) {
            LinkedList list = this.array[this.index];
            if ( list != null ) {
                activation = (Activation) ((LinkedListEntry)list.removeFirst()).getObject();
                if ( list.isEmpty()) {

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        int j = 0;
        for ( int i = 0; i < this.array.length; i++ ) {;
            LinkedList list = this.array[i];
            if ( list != null ) {
                Iterator it = list.iterator();
                Activation activation = ( Activation ) ((LinkedListEntry)it.next()).getObject();
                while ( activation != null) {
                    activations[j++] = activation;
                    activation = ( Activation ) it.next();
                }
            }

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        workingMemory.setGlobal( "map",
                                 map );


        final LeftTupleImpl tuple = new MockTuple( new HashMap() );
        tuple.setLeftTupleSink( new RuleTerminalNode(1, null, rule,rule.getLhs(), 0,new BuildContext(ruleBase, null) )  );        
        final Activation activation = new MockActivation( rule,
                                                          0,
                                                          rule.getLhs(),
                                                          tuple );


        DefaultKnowledgeHelper knowledgeHelper = new org.drools.base.DefaultKnowledgeHelper( workingMemory );

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        workingMemory.setGlobal( "map",
                                 map );


        final LeftTupleImpl tuple = new MockTuple( new HashMap() );
        tuple.setLeftTupleSink( new RuleTerminalNode(1, null, newRule,newRule.getLhs(), 0, new BuildContext(ruleBase, null) )  );
        final Activation activation = new MockActivation( newRule,
                                                          0,
                                                          newRule.getLhs(),
                                                          tuple );


        final DefaultKnowledgeHelper knowledgeHelper = new org.drools.base.DefaultKnowledgeHelper( workingMemory );

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Related Classes of org.drools.spi.Activation

org.drools.common.ActivationIterator

org.drools.common.ActiveActivationIterator

org.drools.common.ArrayAgendaGroup

org.drools.common.DefaultAgenda

org.drools.common.RuleFlowGroupImpl

org.drools.compiler.PackageBuilderTest

org.drools.integrationtests.ExecutionFlowControlTest

org.drools.marshalling.impl.ProtobufInputMarshaller

org.drools.reteoo.AgendaTest

org.drools.reteoo.LogicalAssertionTest

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