UnfoldStep (Apache TinkerPop 3.6.2 API)

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

All Implemented Interfaces:

Serializable, Cloneable, Iterator<Traverser.Admin<E>>, Step<S,E>
```
public final class UnfoldStep<S,E>
extends FlatMapStep<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

UnfoldStep(Traversal.Admin traversal)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected Iterator<E>`	`flatMap(Traverser.Admin<S> traverser)`
`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.map.FlatMapStep
closeIterator, processNextStart, reset

Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep
addLabel, addStart, addStarts, 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

- Constructor Detail
  - UnfoldStep
```
public UnfoldStep(Traversal.Admin traversal)
```
- Method Detail
  - flatMap
```
protected Iterator<E> flatMap(Traverser.Admin<S> traverser)
```
    Specified by:
    
    flatMap in class FlatMapStep<S,E>
  - 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.
    
    Returns:
    
    the set of requirements