public abstract class CollectingBarrierStep<S> extends AbstractStep<S,S> implements Barrier<TraverserSet<S>>
id, labels, nextEnd, nextStep, previousStep, starts, traversal, traverserStepIdAndLabelsSetByChild| Constructor and Description |
|---|
CollectingBarrierStep(Traversal.Admin traversal) |
CollectingBarrierStep(Traversal.Admin traversal,
int maxBarrierSize) |
| Modifier and Type | Method and Description |
|---|---|
void |
addBarrier(TraverserSet<S> barrier)
Add a barrier to the step.
|
abstract void |
barrierConsumer(TraverserSet<S> traverserSet) |
CollectingBarrierStep<S> |
clone()
Cloning is used to duplicate steps for the purpose of traversal optimization and OLTP replication.
|
MemoryComputeKey<TraverserSet<S>> |
getMemoryComputeKey()
The
MemoryComputeKey that will be used by this step. |
Set<TraverserRequirement> |
getRequirements()
Provide the necessary
TraverserRequirement that must be met by the traverser in order for the step to function properly. |
int |
hashCode() |
boolean |
hasNextBarrier()
Whether or not the step has an accessible barrier.
|
TraverserSet<S> |
nextBarrier()
Get the next barrier within this step.
|
void |
processAllStarts()
Process all left traversers by do not yield the resultant output.
|
Traverser.Admin<S> |
processNextStart() |
void |
reset()
Reset the state of the step such that it has no incoming starts.
|
String |
toString() |
addLabel, addStart, addStarts, equals, getId, getLabels, getNextStep, getPreviousStep, getTraversal, hasNext, next, removeLabel, setId, setNextStep, setPreviousStep, setTraversalfinalize, getClass, notify, notifyAll, wait, wait, waitforEachRemaining, removepublic CollectingBarrierStep(Traversal.Admin traversal)
public CollectingBarrierStep(Traversal.Admin traversal, int maxBarrierSize)
public abstract void barrierConsumer(TraverserSet<S> traverserSet)
public 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.getRequirements in interface Step<S,S>public void processAllStarts()
BarrierReducingBarrierStep, where traversers can be processed "on the fly" and thus, reduce memory consumption.processAllStarts in interface Barrier<TraverserSet<S>>public boolean hasNextBarrier()
BarrierhasNextBarrier in interface Barrier<TraverserSet<S>>public TraverserSet<S> nextBarrier() throws NoSuchElementException
BarriernextBarrier in interface Barrier<TraverserSet<S>>NoSuchElementExceptionpublic void addBarrier(TraverserSet<S> barrier)
BarrieraddBarrier in interface Barrier<TraverserSet<S>>barrier - the barrier to merge inpublic Traverser.Admin<S> processNextStart()
processNextStart in class AbstractStep<S,S>public CollectingBarrierStep<S> clone()
StepEmptyStep.public String toString()
toString in class AbstractStep<S,S>public int hashCode()
hashCode in class AbstractStep<S,S>public void reset()
Steppublic MemoryComputeKey<TraverserSet<S>> getMemoryComputeKey()
MemoryComputingMemoryComputeKey that will be used by this step.getMemoryComputeKey in interface MemoryComputing<TraverserSet<S>>Copyright © 2013–2016 Apache Software Foundation. All rights reserved.