org.apache.tinkerpop.gremlin.process.traversal.step.map

Class CountGlobalStep<S>

java.lang.Object

org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep<S,E>

org.apache.tinkerpop.gremlin.process.traversal.step.util.ReducingBarrierStep<S,Long>

org.apache.tinkerpop.gremlin.process.traversal.step.map.CountGlobalStep<S>

All Implemented Interfaces:

Serializable, Cloneable, Iterator<Traverser<Long>>, Step<S,Long>, EngineDependent, MapReducer

public final class CountGlobalStep<S>
extends ReducingBarrierStep<S,Long>
implements MapReducer

Author:

Marko A. Rodriguez (http://markorodriguez.com)

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.util.ReducingBarrierStep

ReducingBarrierStep.DefaultMapReduce, ReducingBarrierStep.FinalGet<A>

Field Summary

Fields inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.util.ReducingBarrierStep

byPass, REDUCING, reducingBiFunction, seedSupplier

Fields inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep

id, labels, nextEnd, nextStep, previousStep, starts, traversal, traverserStepIdSetByChild

Constructor Summary

Constructors

Constructor and Description
CountGlobalStep(Traversal.Admin traversal)

Method Summary

Modifier and Type	Method and Description
MapReduce<MapReduce.NullObject,Long,MapReduce.NullObject,Long,Long>	getMapReduce()
Set<TraverserRequirement>	getRequirements() Provide the necessary TraverserRequirement that must be met by the traverser in order for the step to function properly.

Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.util.ReducingBarrierStep

clone, onEngine, processNextStart, reset, setBiFunction, setSeedSupplier

Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep

addLabel, addStart, addStarts, equals, getId, getLabels, getNextStep, getPreviousStep, getTraversal, hashCode, hasNext, next, removeLabel, setId, setNextStep, setPreviousStep, setTraversal, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.tinkerpop.gremlin.process.traversal.Step

equals

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Constructor Detail

CountGlobalStep

public CountGlobalStep(Traversal.Admin traversal)

Method Detail

getRequirements

public Set<TraverserRequirement> getRequirements()

Description copied from interface: Step

Provide the necessary TraverserRequirement that must be met by the traverser in order for the step to function properly. The provided default implements returns an empty set.

Specified by:

getRequirements in interface Step<S,Long>

Returns:

the set of requirements

getMapReduce

public MapReduce<MapReduce.NullObject,Long,MapReduce.NullObject,Long,Long> getMapReduce()

Specified by:

getMapReduce in interface MapReducer

Overrides:

getMapReduce in class ReducingBarrierStep<S,Long>