Examples of org.drools.reteoo.ExistsNode

org.drools.reteoo.ExistsNode
ExistsNode extends BetaNode to perform tests for the existence of a Fact plus one or more conditions. Where existence is found the left ReteTuple is copied and propagated. Further to this it maintains the "truth" by canceling any Activations that are no longer considered true by the retraction of ReteTuple's or FactHandleImpl. Tuples are considered to be asserted from the left input and facts from the right input. The BetaNode provides the BetaMemory to store asserted ReteTuples and FactHandleImpls. Each fact handle is stored in the right memory.



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            // then attach the EXISTS node. It will work both as a simple exists node
            // or as subnetwork join node as the context was set appropriatelly
            // in each case
            context.setTupleSource( (LeftTupleSource) utils.attachNode( context,
                                                                        new ExistsNode( context.getNextId(),
                                                                                        context.getTupleSource(),
                                                                                        context.getObjectSource(),
                                                                                        betaConstraints,
                                                                                        context ) ) );
            context.setBetaconstraints( null );

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154                                                               buildContext.getRuleBase().getConfiguration() );                    
                    break;                                        
                        
            }


            ExistsNode existsNode = new ExistsNode( buildContext.getNextId(),
                                                    leftTupleSource,
                                                    rightObjectSource,
                                                    constraints,
                                                    BehaviorManager.NO_BEHAVIORS,
                                                    buildContext );
            existsNode.attach();
            context.put( name,
                         existsNode );


        } else {
            throw new IllegalArgumentException( "Cannot arguments " + args );

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            // then attach the EXISTS node. It will work both as a simple exists node
            // or as subnetwork join node as the context was set appropriatelly
            // in each case
            context.setTupleSource( (LeftTupleSource) utils.attachNode( context,
                                                                        new ExistsNode( context.getNextId(),
                                                                                        context.getTupleSource(),
                                                                                        context.getObjectSource(),
                                                                                        betaConstraints,
                                                                                        behaviors,
                                                                                        context ) ) );

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            // then attach the EXISTS node. It will work both as a simple exists node
            // or as subnetwork join node as the context was set appropriatelly
            // in each case
            context.setTupleSource( (LeftTupleSource) utils.attachNode( context,
                                                                        new ExistsNode( context.getNextId(),
                                                                                        context.getTupleSource(),
                                                                                        context.getObjectSource(),
                                                                                        betaConstraints,
                                                                                        context ) ) );
            context.setBetaconstraints( null );

View Full Code Here


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            // then attach the EXISTS node. It will work both as a simple exists node
            // or as subnetwork join node as the context was set appropriatelly
            // in each case
            context.setTupleSource( (LeftTupleSource) utils.attachNode( context,
                                                                        new ExistsNode( context.getNextId(),
                                                                                        context.getTupleSource(),
                                                                                        context.getObjectSource(),
                                                                                        betaConstraints,
                                                                                        behaviors,
                                                                                        context ) ) );

View Full Code Here


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            // then attach the EXISTS node. It will work both as a simple exists node
            // or as subnetwork join node as the context was set appropriatelly
            // in each case
            context.setTupleSource( (LeftTupleSource) utils.attachNode( context,
                                                                        new ExistsNode( context.getNextId(),
                                                                                        context.getTupleSource(),
                                                                                        context.getObjectSource(),
                                                                                        betaConstraints,
                                                                                        behaviors,
                                                                                        context ) ) );

View Full Code Here


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            // then attach the EXISTS node. It will work both as a simple exists node
            // or as subnetwork join node as the context was set appropriatelly
            // in each case
            context.setTupleSource( (LeftTupleSource) utils.attachNode( context,
                                                                        new ExistsNode( context.getNextId(),
                                                                                        context.getTupleSource(),
                                                                                        context.getObjectSource(),
                                                                                        betaConstraints,
                                                                                        behaviors,
                                                                                        context ) ) );

View Full Code Here


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1714         RightInputAdapterNode riaNode1 = (RightInputAdapterNode) queryElementNode1.getSinkPropagator().getSinks()[0];
        AccumulateNode accNode = (AccumulateNode) riaNode1.getSinkPropagator().getSinks()[0];


        QueryElementNode queryElementNode2 = (QueryElementNode) accNode.getSinkPropagator().getSinks()[0];
        RightInputAdapterNode riaNode2 = (RightInputAdapterNode) queryElementNode2.getSinkPropagator().getSinks()[0];
        ExistsNode existsNode = (ExistsNode) riaNode2.getSinkPropagator().getSinks()[0];


        QueryElementNode queryElementNode3 = (QueryElementNode) existsNode.getSinkPropagator().getSinks()[0];
        FromNode fromNode = (FromNode) queryElementNode3.getSinkPropagator().getSinks()[0];
        RightInputAdapterNode riaNode3 = (RightInputAdapterNode) fromNode.getSinkPropagator().getSinks()[0];
        NotNode notNode = (NotNode) riaNode3.getSinkPropagator().getSinks()[0];


        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();

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111             }


            SingleBetaConstraints constraints = new SingleBetaConstraints( betaConstraint,
                                                                           buildContext.getRuleBase().getConfiguration() );


            ExistsNode existsNode = new ExistsNode( buildContext.getNextId(),
                                                    leftTupleSource,
                                                    rightObjectSource,
                                                    constraints,
                                                    BehaviorManager.NO_BEHAVIORS,
                                                    buildContext );
            existsNode.attach();
            context.put( name,
                         existsNode );


        } else {
            throw new IllegalArgumentException( "Cannot arguments " + args );

View Full Code Here


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148                                                               buildContext.getRuleBase().getConfiguration() );                    
                    break;                                        
                        
            }


            ExistsNode existsNode = new ExistsNode( buildContext.getNextId(),
                                                    leftTupleSource,
                                                    rightObjectSource,
                                                    constraints,
                                                    buildContext );
            existsNode.attach();
            context.put( name,
                         existsNode );


        } else {
            throw new IllegalArgumentException( "Cannot arguments " + args );

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Related Classes of org.drools.reteoo.ExistsNode

org.drools.common.InternalFactHandle
org.drools.common.StagedRightTuples
org.drools.core.util.FastIterator
org.drools.core.util.index.RightTupleList
org.drools.core.util.Iterator
org.drools.core.util.RightTupleList
org.drools.integrationtests.BackwardChainingTest
org.drools.reteoo.builder.GroupElementBuilder$ExistsBuilder
org.drools.reteoo.test.dsl.ExistsNodeStep
org.drools.util.Iterator



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