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 $

        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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            // AgendaGroup is active
            // we must check the context to determine if its a new tuple or an
            // exist re-activated tuple as part of the retract
            if ( activation.getPropagationContext().getType() == PropagationContext.MODIFICATION ) {
                if ( activation.getRule().isLockOnActive() && agendaGroup.isActive() ) {
                    Activation justifier = activation.getPropagationContext().removeRetractedTuple( activation.getRule(),
                                                                                                    (LeftTuple) activation.getTuple() );


                    if ( justifier == null ) {
                        // This rule is locked and active, do not allow new
                        // tuples to activate
                        return false;
                    } else if ( activation.getRule().hasLogicalDependency() ) {
                        copyLogicalDependencies( activation.getPropagationContext(),
                                                 workingMemory,
                                                 activation,
                                                 justifier );
                    }
                } else if ( activation.getRule().hasLogicalDependency() ) {
                    Activation justifier = activation.getPropagationContext().removeRetractedTuple( activation.getRule(),
                                                                                                    (LeftTuple) activation.getTuple() );
                    copyLogicalDependencies( activation.getPropagationContext(),
                                             workingMemory,
                                             activation,
                                             justifier );
                }
            } else if ( activation.getRule().isLockOnActive() && agendaGroup.isActive() ) {
                return false;
            }


            agendaGroup.add( activation );
        } else {
            // There is a RuleFlowNode so add it there, instead of the Agenda
            InternalRuleFlowGroup rfg = (InternalRuleFlowGroup) this.getRuleFlowGroup( activation.getRule().getRuleFlowGroup() );


            // do not add the activation if the rule is "lock-on-active" and the
            // RuleFlowGroup is active
            // we must check the context to determine if its a new tuple or an
            // exist re-activated tuple as part of the retract
            if ( activation.getPropagationContext().getType() == PropagationContext.MODIFICATION ) {
                if ( activation.getRule().isLockOnActive() && rfg.isActive() ) {
                    Activation justifier = activation.getPropagationContext().removeRetractedTuple( activation.getRule(),
                                                                                                    (LeftTuple) activation.getTuple() );
                    if ( justifier == null ) {
                        // This rule is locked and active, do not allow new
                        // tuples to activate
                        return false;
                    } else if ( activation.getRule().hasLogicalDependency() ) {
                        copyLogicalDependencies( activation.getPropagationContext(),
                                                 workingMemory,
                                                 activation,
                                                 justifier );
                    }
                } else if ( activation.getRule().hasLogicalDependency() ) {
                    Activation justifier = activation.getPropagationContext().removeRetractedTuple( activation.getRule(),
                                                                                                    (LeftTuple) activation.getTuple() );
                    copyLogicalDependencies( activation.getPropagationContext(),
                                             workingMemory,
                                             activation,
                                             justifier );

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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.getRuleFlowGroupNode() != null ) {
                    final InternalRuleFlowGroup ruleFlowGroup = activation.getRuleFlowGroupNode().getRuleFlowGroup();
                    ruleFlowGroup.removeActivation( activation );
                }


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

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                                               long processInstanceId) {


        RuleFlowGroup systemRuleFlowGroup = this.getRuleFlowGroup( ruleflowGroupName );


        for ( Iterator<RuleFlowGroupNode> 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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        } else {
            ((EventSupport) this.workingMemory).getRuleFlowEventSupport().fireBeforeRuleFlowGroupDeactivated( this,
                                                                                                              this.workingMemory );
            final Iterator it = this.list.iterator();
            for ( RuleFlowGroupNode node = (RuleFlowGroupNode) it.next(); node != null; node = (RuleFlowGroupNode) it.next() ) {
                final Activation activation = node.getActivation();
                activation.remove();
                if ( activation.getActivationGroupNode() != null ) {
                    activation.getActivationGroupNode().getActivationGroup().removeActivation( activation );
                }
            }
            notifyRuleFlowGroupListeners();
            ((EventSupport) this.workingMemory).getRuleFlowEventSupport().fireAfterRuleFlowGroupDeactivated( this,
                                                                                                             this.workingMemory );

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    private void triggerActivations() {
        // iterate all activations adding them to their AgendaGroups
        final Iterator it = this.list.iterator();
        for ( RuleFlowGroupNode node = (RuleFlowGroupNode) it.next(); node != null; node = (RuleFlowGroupNode) it.next() ) {
            final Activation activation = node.getActivation();
            ((InternalAgendaGroup) activation.getAgendaGroup()).add( activation );
        }
        // making sure we re-evaluate agenda in case we are waiting for activations
        ((InternalAgenda) workingMemory.getAgenda()).notifyHalt();
    }

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

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        } else {
            ((EventSupport) this.workingMemory).getAgendaEventSupport().fireBeforeRuleFlowGroupDeactivated( this,
                                                                                                              this.workingMemory );
            final Iterator it = this.list.iterator();
            for ( ActivationNode node = (ActivationNode) it.next(); node != null; node = (ActivationNode) it.next() ) {
                final Activation activation = node.getActivation();
                activation.remove();
                if ( activation.getActivationGroupNode() != null ) {
                    activation.getActivationGroupNode().getActivationGroup().removeActivation( activation );
                }
            }
            nodeInstances.clear();
            notifyRuleFlowGroupListeners();
            ((EventSupport) this.workingMemory).getAgendaEventSupport().fireAfterRuleFlowGroupDeactivated( this,

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    private void triggerActivations() {
        // iterate all activations adding them to their AgendaGroups
        final Iterator it = this.list.iterator();
        for ( ActivationNode node = (ActivationNode) it.next(); node != null; node = (ActivationNode) it.next() ) {
            final Activation activation = node.getActivation();
            ((InternalAgendaGroup) activation.getAgendaGroup()).add( activation );
        }
        // making sure we re-evaluate agenda in case we are waiting for activations
        ((InternalAgenda) workingMemory.getAgenda()).notifyHalt();
    }

View Full Code Here

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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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