public final class CoalesceStep<S,E> extends FlatMapStep<S,E> implements TraversalParent
id, labels, nextEnd, nextStep, previousStep, starts, traversal, traverserStepIdAndLabelsSetByChild
Constructor and Description |
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CoalesceStep(Traversal.Admin traversal,
Traversal.Admin<S,E>... coalesceTraversals) |
Modifier and Type | Method and Description |
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CoalesceStep<S,E> |
clone()
Cloning is used to duplicate steps for the purpose of traversal optimization and OLTP replication.
|
protected Iterator<E> |
flatMap(Traverser.Admin<S> traverser) |
List<Traversal.Admin<S,E>> |
getLocalChildren() |
Set<TraverserRequirement> |
getRequirements()
Provide the necessary
TraverserRequirement that must be met by the traverser in order for the step to
function properly. |
int |
hashCode() |
void |
setTraversal(Traversal.Admin<?,?> parentTraversal)
Set the
Traversal that this step is contained within. |
String |
toString() |
closeIterator, processNextStart, reset
addLabel, addStart, addStarts, equals, getId, getLabels, getNextStep, getPreviousStep, getStarts, getTraversal, hasNext, hasStarts, isTraverserStepIdAndLabelsSetByChild, next, prepareTraversalForNextStep, removeLabel, setId, setNextStep, setPreviousStep
finalize, getClass, notify, notifyAll, wait, wait, wait
addGlobalChild, addLocalChild, asStep, close, getGlobalChildren, getSelfAndChildRequirements, integrateChild, removeGlobalChild, removeLocalChild, replaceLocalChild
forEachRemaining, remove
@SafeVarargs public CoalesceStep(Traversal.Admin traversal, Traversal.Admin<S,E>... coalesceTraversals)
protected Iterator<E> flatMap(Traverser.Admin<S> traverser)
flatMap
in class FlatMapStep<S,E>
public Set<TraverserRequirement> getRequirements()
Step
TraverserRequirement
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,E>
public List<Traversal.Admin<S,E>> getLocalChildren()
getLocalChildren
in interface TraversalParent
public CoalesceStep<S,E> clone()
Step
Step.reset()
is called. Moreover, the previous and next steps should be set to EmptyStep
.public void setTraversal(Traversal.Admin<?,?> parentTraversal)
Step
Traversal
that this step is contained within.setTraversal
in interface Step<S,E>
setTraversal
in class AbstractStep<S,E>
parentTraversal
- the new traversal for this steppublic String toString()
toString
in class AbstractStep<S,E>
public int hashCode()
hashCode
in class AbstractStep<S,E>
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