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

Class FlatMapStep<S,E>

java.lang.Object

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

org.apache.tinkerpop.gremlin.process.traversal.step.map.FlatMapStep<S,E>

All Implemented Interfaces:

Serializable, Cloneable, Iterator<Traverser.Admin<E>>, Step<S,E>

Direct Known Subclasses:

AbstractMergeElementStepPlaceholder, CoalesceStep, EdgeVertexStep, LabelsStep, LambdaFlatMapStep, MergeElementStep, ProfileTest.MockStep, PropertiesStep, TraversalFlatMapStep, UnfoldStep, VertexStep, VertexStepPlaceholder

public abstract class FlatMapStep<S,E>
extends AbstractStep<S,E>

Author:

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

See Also:

• Serialized Form

Field Summary

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

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

Constructor Summary

Constructors

Constructor	Description
FlatMapStep(Traversal.Admin traversal)

Method Summary

Modifier and Type	Method	Description
protected void	closeIterator()
protected abstract Iterator<E>	flatMap(Traverser.Admin<S> traverser)
protected Traverser.Admin<E>	processNextStart()
void	reset()	Reset the state of the step such that it has no incoming starts.

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

addLabel, addStart, addStarts, clearLabels, clone, equals, getId, getLabels, getNextStep, getPreviousStep, getStarts, getTraversal, hashCode, hasNext, hasStarts, isTraverserStepIdAndLabelsSetByChild, next, prepareTraversalForNextStep, removeLabel, setId, setNextStep, setPreviousStep, setTraversal, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

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

equals, getRequirements

Constructor Details

FlatMapStep

public FlatMapStep(Traversal.Admin traversal)

Method Details

processNextStart

protected Traverser.Admin<E> processNextStart()

Specified by:

processNextStart in class AbstractStep<S,E>

flatMap

protected abstract Iterator<E> flatMap(Traverser.Admin<S> traverser)

reset

public void reset()

Description copied from interface: Step

Reset the state of the step such that it has no incoming starts. Internal states are to be reset, but any sideEffect data structures are not to be recreated.

Specified by:

reset in interface Step<S,E>

Overrides:

reset in class AbstractStep<S,E>

closeIterator

protected void closeIterator()