public final class TreeStep<S> extends ReducingBarrierStep<S,Tree> implements MapReducer, TraversalParent, PathProcessor
| Modifier and Type | Class and Description |
|---|---|
static class |
TreeStep.TreeMapReduce |
ReducingBarrierStep.DefaultMapReducePathProcessor.ElementRequirementbyPass, REDUCING, reducingBiFunction, seedSupplierid, labels, nextEnd, nextStep, previousStep, starts, traversal, traverserStepIdAndLabelsSetByChild| Constructor and Description |
|---|
TreeStep(Traversal.Admin traversal) |
| Modifier and Type | Method and Description |
|---|---|
void |
addLocalChild(Traversal.Admin<?,?> treeTraversal) |
TreeStep<S> |
clone()
Cloning is used to duplicate steps for the purpose of traversal optimization and OLTP replication.
|
List<Traversal.Admin<Object,Object>> |
getLocalChildren() |
MapReduce<MapReduce.NullObject,Tree,MapReduce.NullObject,Tree,Tree> |
getMapReduce() |
Set<TraverserRequirement> |
getRequirements()
Provide the necessary
TraverserRequirement that must be met by the traverser in order for the step to function properly. |
int |
hashCode() |
Traverser<Tree> |
processNextStart() |
void |
reset()
Reset the state of the step such that it has no incoming starts.
|
String |
toString() |
onEngine, processAllStarts, 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, removeLocalChildgetMaxRequirementforEachRemaining, removepublic TreeStep(Traversal.Admin traversal)
public List<Traversal.Admin<Object,Object>> getLocalChildren()
getLocalChildren in interface TraversalParentpublic void addLocalChild(Traversal.Admin<?,?> treeTraversal)
addLocalChild 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.getRequirements in interface Step<S,Tree>public MapReduce<MapReduce.NullObject,Tree,MapReduce.NullObject,Tree,Tree> getMapReduce()
getMapReduce in interface MapReducergetMapReduce in class ReducingBarrierStep<S,Tree>public TreeStep<S> clone()
StepEmptyStep.public int hashCode()
hashCode in class AbstractStep<S,Tree>public Traverser<Tree> processNextStart()
processNextStart in class ReducingBarrierStep<S,Tree>public String toString()
toString in class AbstractStep<S,Tree>public void reset()
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