Examples of org.drools.core.spi.Activation

org.drools.core.spi.Activation
When a Tuple fully matches a rule it is added to the Agenda As an Activation. Each Activation is assigned a number, this number is determined by the WorkingMemory all Activations created from a single insert, update, retract are assgigned the same Activation number.

        // or could be true due to lock-on-active blocking activation creation
        if ( obj == null || obj == Boolean.TRUE) {
            return;
        }


        Activation activation = (Activation) obj;
        activation.setMatched( false );
        
        InternalAgenda agenda = (InternalAgenda) workingMemory.getAgenda();


        agenda.cancelActivation( leftTuple, 
                                 context,

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


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


            // this is to catch a race condition as activations are activated and unactivated on timers
            if ( activation instanceof ScheduledAgendaItem ) {
                ScheduledAgendaItem scheduled = (ScheduledAgendaItem) activation;
                workingMemory.getTimerService().removeJob( scheduled.getJobHandle() );
                scheduled.getJobHandle().setCancel( true );
            }


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

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        activationGroup.setTriggeredForRecency( this.workingMemory.getFactHandleFactory().getRecency() );


        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 (ActivationNode aSystemRuleFlowGroup : systemRuleFlowGroup) {
            Activation activation = aSystemRuleFlowGroup.getActivation();
            if (ruleName.equals(activation.getRule().getName())) {
                if (checkProcessInstance(activation, processInstanceId)) {
                    return true;
                }
            }
        }

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        // or could be true due to lock-on-active blocking activation creation
        if ( obj == null || obj == Boolean.TRUE) {
            return;
        }


        Activation activation = (Activation) obj;
        activation.setMatched( false );
        
        InternalAgenda agenda = (InternalAgenda) workingMemory.getAgenda();


        agenda.cancelActivation( leftTuple, 
                                 context,

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


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


            // this is to catch a race condition as activations are activated and unactivated on timers
            if ( activation instanceof ScheduledAgendaItem ) {
                ScheduledAgendaItem scheduled = (ScheduledAgendaItem) activation;
                workingMemory.getTimerService().removeJob( scheduled.getJobHandle() );
                scheduled.getJobHandle().setCancel( true );
            }


            if ( activation.isQueued() ) {
                activation.remove();
                ((EventSupport) workingMemory).getAgendaEventSupport().fireActivationCancelled( activation,
                                                                                                workingMemory,
                                                                                                MatchCancelledCause.CLEAR );
            }

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    public synchronized Activation dequeue() throws NoSuchElementException {
        if ( isEmpty() ) {
            return null;
        }


        final Activation result = this.elements[1];
        result.setQueued(false);
        dequeue(result.getQueueIndex());


        return result;
    }

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        if ( index < 1 || index > this.size ) {
            //throw new NoSuchElementException();
            return null;
        }


        final Activation result = this.elements[index];
        setElement( index,
                    this.elements[this.size] );
        this.elements[this.size] = null;
        this.size--;
        if ( this.size != 0 && index <= this.size ) {
            int compareToParent = 0;
            if ( index > 1 ) {
                compareToParent = compare( this.elements[index],
                                           this.elements[index / 2] );
            }
            if ( index > 1 && compareToParent > 0 ) {
                percolateUpMaxHeap( index );
            } else {
                percolateDownMaxHeap( index );
            }
        }


        result.setQueueIndex(-1);


        return result;
    }

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     * Assumes it is a maximum heap.
     *
     * @param index the index of the element
     */
    protected void percolateDownMaxHeap(final int index) {
        final Activation element = elements[index];
        int hole = index;


        while ((hole * 2) <= size) {
            int child = hole * 2;

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     *
     * @param index the index of the element to be percolated up
     */
    protected void percolateUpMaxHeap(final int index) {
        int hole = index;
        Activation element = elements[hole];


        while (hole > 1 && compare(element, elements[hole / 2]) > 0) {
            // save element that is being pushed down
            // as the element "bubble" is percolated up
            final int next = hole / 2;

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org.drools.compiler.compiler.PackageBuilderTest

org.drools.compiler.integrationtests.ExecutionFlowControlTest

org.drools.core.common.ActivationIterator

org.drools.core.common.ActiveActivationIterator

org.drools.core.common.ArrayAgendaGroup

org.drools.core.common.DefaultAgenda

org.drools.core.common.RuleFlowGroupImpl

org.drools.core.marshalling.impl.ProtobufInputMarshaller

org.drools.core.phreak.PhreakRuleTerminalNode

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