Package org.drools.common

Examples of org.drools.common.AgendaItem

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        RuleTerminalNode ruleTerminalNode = (RuleTerminalNode) leftTuple.getLeftTupleSink();

        PropagationContext pc = context.propagationContexts.get( stream.readLong() );
       
        AgendaItem activation;
       
        boolean scheduled = false;
        if ( rule.getTimer() != null ) {
            activation = new ScheduledAgendaItem( activationNumber,
                                                  leftTuple,
                                                  (InternalAgenda) wm.getAgenda(),
                                                  pc,
                                                  ruleTerminalNode ); 
            scheduled = true;
        } else {
            activation = new AgendaItem( activationNumber,
                                         leftTuple,
                                         salience,
                                         pc,
                                         ruleTerminalNode );           
        }
        leftTuple.setObject( activation );

        if ( stream.readBoolean() ) {
            String activationGroupName = stream.readUTF();
            ((DefaultAgenda) wm.getAgenda()).getActivationGroup( activationGroupName ).addActivation( activation );
        }

        boolean activated = stream.readBoolean();
        activation.setActivated( activated );
       
        if ( stream.readBoolean() ) {           
            InternalFactHandle handle = context.handles.get( stream.readInt() );
            activation.setFactHandle( handle );
            handle.setObject( activation );
        }

        InternalAgendaGroup agendaGroup;
        if ( rule.getAgendaGroup() == null || rule.getAgendaGroup().equals( "" ) || rule.getAgendaGroup().equals( AgendaGroup.MAIN ) ) {
            // Is the Rule AgendaGroup undefined? If it is use MAIN,
            // which is added to the Agenda by default
            agendaGroup = (InternalAgendaGroup) ((DefaultAgenda) wm.getAgenda()).getAgendaGroup( AgendaGroup.MAIN );
        } else {
            // AgendaGroup is defined, so try and get the AgendaGroup
            // from the Agenda
            agendaGroup = (InternalAgendaGroup) ((DefaultAgenda) wm.getAgenda()).getAgendaGroup( rule.getAgendaGroup() );
        }

        activation.setAgendaGroup( agendaGroup );

        if ( !scheduled && activated ) {
            if ( rule.getRuleFlowGroup() == null ) {
                agendaGroup.add( activation );
            } else {
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        this.previousJustified = null;
        this.previousBlocked = null;
    }
     
    public void blockActivation(org.drools.runtime.rule.Activation act) {
        AgendaItem targetMatch = ( AgendaItem ) act;
        // iterate to find previous equal logical insertion
        LogicalDependency dep = null;
        if ( this.previousJustified != null ) {
            for ( dep = (LogicalDependency) this.previousJustified.getFirst(); dep != null; dep = (LogicalDependency) dep.getNext() ) {
                if ( targetMatch ==  dep.getJustified() ) {
                    this.previousJustified.remove( dep );
                    break;
                }
            }
        }
       
        if ( dep == null ) {
            dep = new LogicalDependency( activation, targetMatch );
        }
        this.activation.addBlocked(  dep );
       
        if ( targetMatch.getBlockers().size() == 1 && targetMatch.isActive()  ) {
            // it wasn't blocked before, but is now, so we must remove it from all groups, so it cannot be executed.
            targetMatch.remove();

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

            if ( targetMatch.getActivationNode() != null ) {
                final InternalRuleFlowGroup ruleFlowGroup = (InternalRuleFlowGroup) targetMatch.getActivationNode().getParentContainer();
                ruleFlowGroup.removeActivation( targetMatch );
            }
        }
    }
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            }
        }
    }
   
    public void unblockAllActivations(org.drools.runtime.rule.Activation act) {
        AgendaItem targetMatch = ( AgendaItem ) act;
        boolean wasBlocked = (targetMatch.getBlockers() != null && !targetMatch.getBlockers().isEmpty() );
       
        for ( LinkedListEntry entry = ( LinkedListEntry ) targetMatch.getBlockers().getFirst(); entry != null;  ) {
            LinkedListEntry tmp = ( LinkedListEntry ) entry.getNext();
            LogicalDependency dep = ( LogicalDependency ) entry.getObject();
            ((AgendaItem)dep.getJustifier()).removeBlocked( dep );
            entry = tmp;
        }
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        if ( this.previousBlocked != null ) {
            for ( LogicalDependency dep = (LogicalDependency) this.previousBlocked.getFirst(); dep != null; ) {
                LogicalDependency tmp = ( LogicalDependency ) dep.getNext();
                this.previousBlocked.remove( dep );
               
                AgendaItem justified = ( AgendaItem ) dep.getJustified();
                justified.getBlockers().remove( dep.getJustifierEntry() );
                if (justified.getBlockers().isEmpty() ) {
                    // the match is no longer blocked, so stage it
                    ((DefaultAgenda)workingMemory.getAgenda()).getStageActivationsGroup().addActivation( justified );
                }
                dep = tmp;
            }
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            }
        }       
    }
   
    public void cancelActivation(org.drools.runtime.rule.Activation act) {
        AgendaItem match = ( AgendaItem ) act;
        if ( match.isActive() ) {
            LeftTuple leftTuple = match.getTuple();
            leftTuple.getLeftTupleSink().retractLeftTuple( leftTuple, (PropagationContext) act.getPropagationContext(), workingMemory );
        }
    }
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        final InternalFactHandle f0 = (InternalFactHandle) wm.insert( cheddar );
        final LeftTuple tuple = new LeftTuple( f0,
                                               sink,
                                               true );

        final AgendaItem item = new AgendaItem( 0,
                                                tuple,
                                                10,
                                                new PropagationContextImpl( 1,
                                                                            1,
                                                                            null,
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        final InternalFactHandle f0 = (InternalFactHandle) wm.insert( cheddar );
        final LeftTuple tuple = new LeftTuple( f0,
                                               null,
                                               true );

        final AgendaItem item = new AgendaItem( 0,
                                                tuple,
                                                10,
                                                null,
                                                context.getRule(),
                                                null );
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        final Cheese cheddar = new Cheese( "cheddar",
                                           10 );
        final InternalFactHandle f0 = (InternalFactHandle) wm.insert( cheddar );
        final ReteTuple tuple = new ReteTuple( f0 );

        final AgendaItem item = new AgendaItem( 0,
                                                tuple,
                                                10,
                                                new PropagationContextImpl(1, 1, null, null),
                                                context.getRule(),
                                                null );
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        final Cheese cheddar = new Cheese( "cheddar",
                                           10 );
        final InternalFactHandle f0 = (InternalFactHandle) wm.insert( cheddar );
        final ReteTuple tuple = new ReteTuple( f0 );

        final AgendaItem item = new AgendaItem( 0,
                                                tuple,
                                                10,
                                                null,
                                                context.getRule(),
                                                null );
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            }
            // -----------------
            // Lazy instantiation and addition to the Agenda of AgendGroup
            // implementations
            // ----------------
            final AgendaItem item = agenda.createAgendaItem( tuple,
                                                             rule.getSalience().getValue( tuple,
                                                                                          workingMemory ),
                                                             context,
                                                             this.rule,
                                                             this.subrule );
            item.setSequenence( this.sequence );

            tuple.setObject( item );

            boolean added = agenda.addActivation( item );

            if ( added ) {
                item.setActivated( true );
                ((EventSupport) workingMemory).getAgendaEventSupport().fireActivationCreated( item,
                                                                                              workingMemory );
            }
        }
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Related Classes of org.drools.common.AgendaItem

  • org.drools.base.DefaultKnowledgeHelper
  • org.drools.base.mvel.ActivationPropertyHandler
  • org.drools.core.util.LinkedList
  • org.drools.marshalling.impl.InputMarshaller
  • org.drools.marshalling.InputMarshaller
  • org.drools.reteoo.AgendaTest
  • org.drools.reteoo.RuleTerminalNode
  • org.drools.rule.builder.dialect.mvel.MVELConsequenceBuilderTest
  • org.drools.rule.builder.dialect.mvel.MVELSalienceBuilderTest
  • org.drools.rule.builder.dialect.mvel.MVELSalienceBuilderTest$SalienceEvaluator
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