Package org.drools.common

Examples of org.drools.common.InternalAgenda

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             (this.rule.isNoLoop() && this.rule.equals( context.getRuleOrigin() )) ) {
            leftTuple.setObject( Boolean.TRUE );
            return;
        }

        final InternalAgenda agenda = (InternalAgenda) workingMemory.getAgenda();

        boolean fire = agenda.createActivation( leftTuple,
                                                context,
                                                workingMemory,
                                                this,
                                                false );
        if( fire && !fireDirect ) {
            agenda.addActivation( (AgendaItem) leftTuple.getObject() );           
        }
    }
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    }

    public void modifyLeftTuple(LeftTuple leftTuple,
                                PropagationContext context,
                                InternalWorkingMemory workingMemory) {
        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;
            }
        }

        // if the current Rule is no-loop and the origin rule is the same then return
        if ( (!this.rule.isEffective( leftTuple,
                                      this,
                                      workingMemory )) ||
             (this.rule.isNoLoop() && this.rule.equals( context.getRuleOrigin() )) ) {
            agenda.increaseDormantActivations();
            return;
        }

        boolean reuseActivation = true;
        if ( o  == Boolean.TRUE ) {
            // set to Boolean.TRUE when lock-on-active stops an Activation being created
            // We set this instead of doing a null check, as it's a little safer due to intent.
            reuseActivation = false;
            leftTuple.setObject( null );
        }
        boolean fire = agenda.createActivation( leftTuple, context, workingMemory, this, reuseActivation );
        if ( fire && !isFireDirect() ) {
            // This activation is currently dormant and about to reactivated, so decrease the dormant count.
            agenda.decreaseDormantActivations();

            agenda.modifyActivation( (AgendaItem) leftTuple.getObject(), false );
        }
    }
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        final Activation activation = (Activation) leftTuple.getObject();

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

        agenda.cancelActivation( leftTuple,
                                 context,
                                 workingMemory,
                                 activation,
                                 this );
    }
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             (this.rule.isNoLoop() && this.rule.equals( context.getRuleOrigin() )) ) {
            leftTuple.setObject( Boolean.TRUE );
            return;
        }

        final InternalAgenda agenda = (InternalAgenda) workingMemory.getAgenda();
       
        if( unlinkingEnabled ) {
            // Find the most recent PropagationContext, as this caused this rule to elegible for firing
            LeftTuple lt = leftTuple;
            while ( lt != null ) {
                if ( lt.getPropagationContext() != null && lt.getPropagationContext().getPropagationNumber() > context.getPropagationNumber() ) {
                    context = lt.getPropagationContext();
                }
                lt = lt.getParent();
            }
        }

        boolean fire = agenda.createActivation( leftTuple,
                                                context,
                                                workingMemory,
                                                this,
                                                false );
        if( fire && !fireDirect ) {
            agenda.addActivation( (AgendaItem) leftTuple.getObject() );
        }
    }
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    }

    public void modifyLeftTuple(LeftTuple leftTuple,
                                PropagationContext context,
                                InternalWorkingMemory workingMemory) {
      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;
          }
      }

        // if the current Rule is no-loop and the origin rule is the same then return
        if ( (!this.rule.isEffective( leftTuple,
                                      this,
                                      workingMemory )) ||
             (this.rule.isNoLoop() && this.rule.equals( context.getRuleOrigin() )) ) {
            agenda.increaseDormantActivations();
            return;
        }

        boolean reuseActivation = true;
        if ( o  == Boolean.TRUE ) {
          // set to Boolean.TRUE when lock-on-active stops an Activation being created
          // We set this instead of doing a null check, as it's a little safer due to intent.
          reuseActivation = false;
          leftTuple.setObject( null );
        }
        boolean fire = agenda.createActivation( leftTuple, context, workingMemory, this, reuseActivation );
        if ( fire && !isFireDirect() ) {
            // This activation is currently dormant and about to reactivated, so decrease the dormant count.
            agenda.decreaseDormantActivations();

            agenda.modifyActivation( (AgendaItem) leftTuple.getObject(), false );
        }
    }
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        }

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

        agenda.cancelActivation( leftTuple,
                                 context,
                                 workingMemory,
                                 activation,
                                 this );
    }
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    //
    @Test
    public void testAutoFocus() throws ConsequenceException {
        final ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase.newStatefulSession();
        final InternalAgenda agenda = (InternalAgenda) workingMemory.getAgenda();

        // create the agendaGroup
        final AgendaGroup agendaGroup = new BinaryHeapQueueAgendaGroup( "agendaGroup",
                                                                        ruleBase );
        agenda.addAgendaGroup( agendaGroup );

        // create the consequence
        final Consequence consequence = new Consequence() {
            private static final long serialVersionUID = 510l;

            public void evaluate(KnowledgeHelper knowledgeHelper,
                                 WorkingMemory workingMemory) {
                // do nothing
            }

            public void readExternal(ObjectInput in) throws IOException,
                                                    ClassNotFoundException {

            }

            public void writeExternal(ObjectOutput out) throws IOException {

            }

            public String getName() {
                return "default";
            }
        };

        final LeftTupleImpl tuple = new LeftTupleImpl( new DefaultFactHandle( 1,
                                                                      "cheese" ),
                                               null,
                                               true );

        // create a rule for the agendaGroup
        final Rule rule = new Rule( "test-rule",
                                    "agendaGroup" );
        final RuleTerminalNode node = new RuleTerminalNode( 2,
                                                            new MockTupleSource( 2 ),
                                                            rule,
                                                            rule.getLhs(),
                                                            0,
                                                            buildContext );
        rule.setConsequence( consequence );
        final PropagationContext context = new PropagationContextImpl( 0,
                                                                       PropagationContext.INSERTION,
                                                                       rule,
                                                                       null,
                                                                       new DefaultFactHandle() );

        // first test that autoFocus=false works. Here the rule should not fire
        // as its agendaGroup does not have focus.
        rule.setAutoFocus( false );

        node.assertLeftTuple( tuple,
                              context,
                              workingMemory );
       
        agenda.unstageActivations();

        // check activation as added to the agendaGroup
        assertEquals( 1,
                      agendaGroup.size() );

        // fire next item, agendaGroup should not fire as its not on the focus stack
        // and thus should retain its sinle activation
        agenda.fireNextItem( null );
        assertEquals( 1,
                      agendaGroup.size() );

        // Clear the agenda we we can test again
        agenda.clearAndCancel();
        assertEquals( 0,
                      agendaGroup.size() );

        // Now test that autoFocus=true works. Here the rule should fire as its
        // agendaGroup gets the focus when the activation is created.
        rule.setAutoFocus( true );

        node.assertLeftTuple( tuple,
                              context,
                              workingMemory );
       
        agenda.unstageActivations();

        assertEquals( 1,
                      agendaGroup.size() );
        agenda.fireNextItem( null );
        assertEquals( 0,
                      agendaGroup.size() );
    }
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    @Test
    public void testAgendaGroupLockOnActive() {
        final InternalRuleBase ruleBase = (InternalRuleBase) RuleBaseFactory.newRuleBase();

        final ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase.newStatefulSession();
        final InternalAgenda agenda = (InternalAgenda) workingMemory.getAgenda();

        // create the agendaGroup
        final InternalAgendaGroup agendaGroup = new BinaryHeapQueueAgendaGroup( "agendaGroup",
                                                                                ruleBase );
        agenda.addAgendaGroup( agendaGroup );

        final LeftTupleImpl tuple = new LeftTupleImpl( new DefaultFactHandle( 1,
                                                                      "cheese" ),
                                               null,
                                               true );

        // create a rule for the agendaGroup
        final Rule rule = new Rule( "test-rule",
                                    "agendaGroup" );
        final RuleTerminalNode node = new RuleTerminalNode( 2,
                                                            new MockTupleSource( 2 ),
                                                            rule,
                                                            rule.getLhs(),
                                                            0,
                                                            buildContext );

        final PropagationContext context = new PropagationContextImpl( 0,
                                                                       PropagationContext.INSERTION,
                                                                       rule,
                                                                       null,
                                                                       new DefaultFactHandle() );

        // When both the rule is lock-on-active and the agenda group is active, activations should be ignored
        rule.setLockOnActive( true );
        agendaGroup.setActive( true );
        node.assertLeftTuple( tuple,
                              context,
                              workingMemory );
        // activation should be ignored
        assertEquals( 0,
                      agendaGroup.size() );

        // lock-on-active is now false so activation should propagate
        rule.setLockOnActive( false );
        node.assertLeftTuple( tuple,
                              context,
                              workingMemory );
       
        agenda.unstageActivations();
       
        assertEquals( 1,
                      agendaGroup.size() );

        // even if lock-on-active is true, unless the agenda group is active the activation will still propagate
        rule.setLockOnActive( true );
        agendaGroup.setActive( false );
        node.assertLeftTuple( tuple,
                              context,
                              workingMemory );
        agenda.unstageActivations();
        assertEquals( 2,
                      agendaGroup.size() );
    }
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                                                            rule1,
                                                            rule1.getLhs(),
                                                            buildContext );
        final ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase.newStatefulSession();

        final InternalAgenda agenda = (InternalAgenda) workingMemory.getAgenda();

        final Consequence consequence = new Consequence() {
            /**
             *
             */
            private static final long serialVersionUID = 400L;

            public void evaluate(KnowledgeHelper knowledgeHelper,
                                 WorkingMemory workingMemory) {
                // do nothing
            }

            public void readExternal(ObjectInput in) throws IOException,
                                                    ClassNotFoundException {

            }

            public void writeExternal(ObjectOutput out) throws IOException {

            }
        };

        rule1.setConsequence( consequence );

        final DefaultFactHandle handle1 = (DefaultFactHandle) workingMemory.insert( "o1" );
        final LeftTuple tuple1 = new LeftTuple( handle1,
                                                null,
                                                true );

        final PropagationContext context1 = new PropagationContextImpl( 0,
                                                                        PropagationContext.ASSERTION,
                                                                        null,
                                                                        null,
                                                                        null );

        // Test single activation for a single logical assertions
        node.assertLeftTuple( tuple1,
                              context1,
                              workingMemory );

        final String logicalString = new String( "logical" );
        InternalFactHandle logicalHandle = (InternalFactHandle) workingMemory.insert( logicalString,
                                                                                      false,
                                                                                      true,
                                                                                      rule1,
                                                                                      tuple1.getActivation() );
        new RightTuple( logicalHandle,
                        sink );
        // Retract the tuple and test the logically asserted fact was also retracted
        node.retractLeftTuple( tuple1,
                               context1,
                               workingMemory );

        workingMemory.executeQueuedActions();

        assertLength( 1,
                      sink.getRetracted() );

        Object[] values = (Object[]) sink.getRetracted().get( 0 );

        assertSame( logicalHandle,
                    ((RightTuple) values[0]).getFactHandle() );

        // Test single activation for a single logical assertions. This also
        // tests that logical assertions live on after the related Activation
        // has fired.
        node.assertLeftTuple( tuple1,
                              context1,
                              workingMemory );
        logicalHandle = (InternalFactHandle) workingMemory.insert( logicalString,
                                                                   false,
                                                                   true,
                                                                   rule1,
                                                                   tuple1.getActivation() );

        new RightTuple( logicalHandle,
                        sink );

        agenda.fireNextItem( null );

        node.retractLeftTuple( tuple1,
                               context1,
                               workingMemory );

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                                                            rule1.getLhs(),
                                                            0,
                                                            buildContext );
        final ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase.newStatefulSession();

        final InternalAgenda agenda = (InternalAgenda) workingMemory.getAgenda();

        final Consequence consequence = new Consequence() {
            private static final long serialVersionUID = 510l;

            public void evaluate(KnowledgeHelper knowledgeHelper,
                                 WorkingMemory workingMemory) {                 
                LinkedList< LogicalDependency > list = ((DefaultKnowledgeHelper)knowledgeHelper).getpreviousJustified();
                if ( list != null ) {
                    for ( SimpleLogicalDependency dep = ( SimpleLogicalDependency ) list.getFirst(); dep != null; dep =  ( SimpleLogicalDependency ) dep.getNext() ){
                        knowledgeHelper.insertLogical( dep.getObject(), dep.getValue() );
                    }
                }
            }

            public void readExternal(ObjectInput in) throws IOException,
                                                    ClassNotFoundException {

            }

            public void writeExternal(ObjectOutput out) throws IOException {

            }

            public String getName() {
                return "default";
            }
        };

        rule1.setConsequence( consequence );

        final DefaultFactHandle handle1 = (DefaultFactHandle) workingMemory.insert( "o1" );
        final LeftTupleImpl tuple1 = new LeftTupleImpl( handle1,
                                                        null,
                                                        true );

        final PropagationContext context1 = new PropagationContextImpl( 0,
                                                                        PropagationContext.INSERTION,
                                                                        null,
                                                                        null,
                                                                        new DefaultFactHandle()  );

        // Test single activation for a single logical assertions
        node.assertLeftTuple( tuple1,
                              context1,
                              workingMemory );

        final String logicalString = new String( "logical" );
        InternalFactHandle logicalHandle = (InternalFactHandle) workingMemory.insert( logicalString,
                                                                                      null,
                                                                                      false,
                                                                                      true,
                                                                                      rule1,
                                                                                      (Activation) tuple1.getObject() );
        new RightTuple( logicalHandle,
                        sink );
        context1.setFactHandle( handle1 );
        // Retract the tuple and test the logically asserted fact was also retracted
        node.retractLeftTuple( tuple1,
                               context1,
                               workingMemory );

        workingMemory.executeQueuedActions();

        assertLength( 1,
                      sink.getRetracted() );

        Object[] values = (Object[]) sink.getRetracted().get( 0 );

        assertSame( logicalHandle,
                    ((RightTuple) values[0]).getFactHandle() );

        // Test single activation for a single logical assertions. This also
        // tests that logical assertions live on after the related Activation
        // has fired.
        node.assertLeftTuple( tuple1,
                              context1,
                              workingMemory );
        logicalHandle = (InternalFactHandle) workingMemory.insert( logicalString,
                                                                   null,
                                                                   false,
                                                                   true,
                                                                   rule1,
                                                                   (Activation) tuple1.getObject() );

        new RightTuple( logicalHandle,
                        sink );

        agenda.fireNextItem( null );

        node.retractLeftTuple( tuple1,
                               context1,
                               workingMemory );
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Related Classes of org.drools.common.InternalAgenda

  • org.drools.reteoo.AgendaTest
  • org.drools.reteoo.LogicalAssertionTest
  • org.drools.reteoo.RuleFlowGroupTest
  • org.drools.reteoo.RuleTerminalNode
  • org.drools.workflow.instance.impl.RuleConstraintEvaluator
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