FlatMapStep (Apache TinkerPop 3.5.5 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>

All Implemented Interfaces:

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

Direct Known Subclasses:

CoalesceStep, EdgeVertexStep, LambdaFlatMapStep, ProfileTest.MockStep, PropertiesStep, TraversalFlatMapStep, UnfoldStep, VertexStep
```
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

All Methods Instance Methods Abstract Methods Concrete Methods
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, 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 Detail
  - FlatMapStep
```
public FlatMapStep(Traversal.Admin traversal)
```
- Method Detail
  - 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()
```