public final class GroupCountStep<S,E> extends ReducingBarrierStep<S,Map<E,Long>> implements MapReducer, TraversalParent
| Modifier and Type | Class and Description | 
|---|---|
| static class  | GroupCountStep.GroupCountMapReduce<E> | 
ReducingBarrierStep.DefaultMapReducebyPass, REDUCING, reducingBiFunction, seedSupplierid, labels, nextEnd, nextStep, previousStep, starts, traversal, traverserStepIdAndLabelsSetByChild| Constructor and Description | 
|---|
| GroupCountStep(Traversal.Admin traversal) | 
| Modifier and Type | Method and Description | 
|---|---|
| void | addLocalChild(Traversal.Admin<?,?> groupTraversal) | 
| GroupCountStep<S,E> | clone()Cloning is used to duplicate steps for the purpose of traversal optimization and OLTP replication. | 
| List<Traversal.Admin<S,E>> | getLocalChildren() | 
| MapReduce<E,Long,E,Long,Map<E,Long>> | getMapReduce() | 
| Set<TraverserRequirement> | getRequirements()Provide the necessary  TraverserRequirementthat must be met by the traverser in order for the step to function properly. | 
| int | hashCode() | 
| Traverser<Map<E,Long>> | processNextStart() | 
| String | toString() | 
onEngine, processAllStarts, reset, setBiFunction, setSeedSupplieraddLabel, addStart, addStarts, equals, getId, getLabels, getNextStep, getPreviousStep, getTraversal, hasNext, next, removeLabel, setId, setNextStep, setPreviousStep, setTraversalfinalize, getClass, notify, notifyAll, wait, wait, waitaddGlobalChild, asStep, getGlobalChildren, getSelfAndChildRequirements, integrateChild, removeGlobalChild, removeLocalChildforEachRemaining, removepublic GroupCountStep(Traversal.Admin traversal)
public void addLocalChild(Traversal.Admin<?,?> groupTraversal)
addLocalChild in interface TraversalParentpublic List<Traversal.Admin<S,E>> getLocalChildren()
getLocalChildren in interface TraversalParentpublic Set<TraverserRequirement> getRequirements()
StepTraverserRequirement that must be met by the traverser in order for the step to function properly.
 The provided default implements returns an empty set.public MapReduce<E,Long,E,Long,Map<E,Long>> getMapReduce()
getMapReduce in interface MapReducergetMapReduce in class ReducingBarrierStep<S,Map<E,Long>>public GroupCountStep<S,E> clone()
StepEmptyStep.public Traverser<Map<E,Long>> processNextStart()
processNextStart in class ReducingBarrierStep<S,Map<E,Long>>Copyright © 2013–2015 Apache Software Foundation. All rights reserved.