Class CountNode

java.lang.Object

tools.refinery.interpreter.rete.network.BaseNode

tools.refinery.interpreter.rete.network.StandardNode

tools.refinery.interpreter.rete.aggregation.IndexerBasedAggregatorNode

tools.refinery.interpreter.rete.aggregation.CountNode

All Implemented Interfaces:

IAggregatorNode, NetworkStructureChangeSensitiveNode, Node, Supplier

public class CountNode
extends IndexerBasedAggregatorNode

An aggregation node that simply counts the number of tuples conforming to the signature.

Since:

1.4

Field Summary

Fields inherited from class StandardNode

childMailboxes, children

Fields inherited from class BaseNode

nodeId, reteContainer, tag, traceInfos

Constructor Summary

Constructors

Constructor	Description
CountNode(ReteContainer reteContainer)

Method Summary

Modifier and Type	Method	Description
Object	aggregateGroup(Tuple signature, Collection<Tuple> group)	Aggregates (reduces) a group of tuples.

Methods inherited from class IndexerBasedAggregatorNode

aggregateAndPack, aggregateGroupAfterUpdate, aggregateUpdate, assignTraceInfo, getAggregatorOuterIdentityIndexer, getAggregatorOuterIndexer, initializeWith, networkStructureChanged, packResult, pullInto, pullIntoWithTimeline

Methods inherited from class StandardNode

appendChild, constructIndex, getChildMailboxes, getPulledContents, getReceivers, issueError, propagateUpdate, removeChild

Methods inherited from class BaseNode

acceptPropagatedTraceInfo, getContainer, getNodeId, getTag, getTraceInfoPatternsEnumerated, getTraceInfos, setTag, toString, toStringCore

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface Node

acceptPropagatedTraceInfo, getCommunicationTracker, getContainer, getNodeId, getTag, getTraceInfos, setTag

Methods inherited from interface Supplier

getPulledContents

Constructor Details

CountNode

public CountNode(ReteContainer reteContainer)

Method Details

aggregateGroup

public Object aggregateGroup(Tuple signature,
 Collection<Tuple> group)

Description copied from class: IndexerBasedAggregatorNode

Aggregates (reduces) a group of tuples. The group can be null.

Specified by:

aggregateGroup in class IndexerBasedAggregatorNode