Package org.drools.core.common

Examples of org.drools.core.common.AgendaItem

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      InternalAgenda agenda = (InternalAgenda) workingMemory.getAgenda();
     
        // we need the inserted facthandle so we can update the network with new Activation
      Object o = leftTuple.getObject();
      if ( o != Boolean.TRUE) {  // would be true due to lock-on-active blocking activation creation
        AgendaItem match = (AgendaItem) o;      
          if ( match != null && match.isQueued() ) {
              // already activated, do nothing
              // although we need to notify the inserted Activation, as it's declarations may have changed.
              agenda.modifyActivation( match, true );
              return;
          }
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        RuleTerminalNode ruleTerminalNode = (RuleTerminalNode) leftTuple.getLeftTupleSink();

        PropagationContext pc = context.propagationContexts.get( stream.readLong() );

        AgendaItem 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() );
        }

        InternalRuleFlowGroup rfg = (InternalRuleFlowGroup) ( (DefaultAgenda) wm.getAgenda() ).getRuleFlowGroup( rule.getRuleFlowGroup() );

        boolean scheduled = false;
        RuleTerminalNodeLeftTuple rtnLeftTuple = ( RuleTerminalNodeLeftTuple ) leftTuple;
        rtnLeftTuple.init(activationNumber, salience, pc, null, agendaGroup);
        activation = rtnLeftTuple;

        if (rule.getTimer() != null) {
            activation = new ScheduledAgendaItem( rtnLeftTuple,
                                                  (InternalAgenda) wm.getAgenda() );
            scheduled = true;
        } else {

        }
        leftTuple.setObject( activation );

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

        boolean activated = stream.readBoolean();
        activation.setQueued(activated);

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

        if (!scheduled && activated) {
            if (rule.getRuleFlowGroup() == null) {
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                if (cancelAndContinue(wm, rtn, rule, leftTuple, pctx, filter)) {
                    continue;

                }

                AgendaItem item = (AgendaItem) leftTuple;
                if (agenda.getActivationsFilter() != null && !agenda.getActivationsFilter().accept(item, wm, rtn)) {
                    // only relevant for seralization, to not refire Matches already fired
                    continue;
                }
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      InternalAgenda agenda = (InternalAgenda) workingMemory.getAgenda();
     
        // we need the inserted facthandle so we can update the network with new Activation
      Object o = leftTuple.getObject();
      if ( o != Boolean.TRUE) {  // would be true due to lock-on-active blocking activation creation
        AgendaItem match = (AgendaItem) o;      
          if ( match != null && match.isActivated() ) {
              // already activated, do nothing
              // although we need to notify the inserted Activation, as it's declarations may have changed.
              agenda.modifyActivation( match, true );
              return;
          }
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            }
        }       
    }
   
    public void cancelMatch(Match act) {
        AgendaItem match = ( AgendaItem ) act;
        match.cancel();
        if ( match.isActive() ) {
            LeftTuple leftTuple = match.getTuple();
            leftTuple.getLeftTupleSink().retractLeftTuple( leftTuple, (PropagationContext) act.getPropagationContext(), workingMemory );
        }
    }
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    protected <T> T doInsertTrait( T thing, boolean logical ) {
        FactHandle fh = insert( thing );
       
        if ( logical ) {
            AgendaItem agendaItem = ( AgendaItem ) activation;
           
            RetractTrait newUnMatch = new RetractTrait(fh);
            ActivationUnMatchListener unmatch = agendaItem.getActivationUnMatchListener();
            if ( unmatch != null ) {
                newUnMatch.setNext( ( RetractTrait ) unmatch );
            }
            agendaItem.setActivationUnMatchListener( newUnMatch );
        }
        return thing;
    }
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    } 
   
    public Object getProperty(String name,
                              Object obj,
                              VariableResolverFactory variableFactory) {
        AgendaItem item = ( AgendaItem ) obj;
        if ( "rule".equals( name ) ) {
            return item.getRule();
        }
       
        if ( "active".equals( name ) ) {
            return item.isActive();
        }
       
        // FIXME hack as MVEL seems to be ignoring indexed variables
        VariableResolver vr = variableFactory.getNextFactory().getVariableResolver( name );
        if ( vr != null ) {
            return vr.getValue();
        }
               
        Declaration declr = item.getTerminalNode().getSubRule().getOuterDeclarations().get( name );
        if ( declr != null ) {
            return declr.getValue( null, item.getTuple().get( declr ).getObject() );
        } else {
            return item.getRule().getMetaData().get( name );
        }
    }
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    public LinkedList<LogicalDependency> getpreviousJustified() {
        return previousJustified;
    }
   
    public void blockMatch(Match act) {
        AgendaItem targetMatch = ( AgendaItem ) act;
        // iterate to find previous equal logical insertion
        LogicalDependency dep = null;
        if ( this.previousJustified != null ) {
            for ( dep = this.previousJustified.getFirst(); dep != null; dep = dep.getNext() ) {
                if ( targetMatch ==  dep.getJustified() ) {
                    this.previousJustified.remove( dep );
                    break;
                }
            }
        }
       
        if ( dep == null ) {
            dep = new SimpleLogicalDependency( 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 unblockAllMatches(Match 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 = this.previousBlocked.getFirst(); dep != null; ) {
                LogicalDependency tmp = 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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Related Classes of org.drools.core.common.AgendaItem

  • org.drools.compiler.rule.builder.dialect.mvel.MVELConsequenceBuilderTest
  • org.drools.compiler.rule.builder.dialect.mvel.MVELSalienceBuilderTest
  • org.drools.compiler.rule.builder.dialect.mvel.MVELSalienceBuilderTest$SalienceEvaluator
  • org.drools.core.base.DefaultKnowledgeHelper
  • org.drools.core.base.mvel.ActivationPropertyHandler
  • org.drools.core.marshalling.impl.InputMarshaller
  • org.drools.core.phreak.RuleExecutor
  • org.drools.core.reteoo.RuleTerminalNode
  • org.drools.core.rule.Declaration
  • org.drools.reteoo.common.AgendaItemTest
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