org.apache.tinkerpop.gremlin.process.traversal.lambda

Class ElementValueTraversal<V>

java.lang.Object

org.apache.tinkerpop.gremlin.process.traversal.lambda.AbstractLambdaTraversal<Element,V>

org.apache.tinkerpop.gremlin.process.traversal.lambda.ElementValueTraversal<V>

All Implemented Interfaces:

Serializable, AutoCloseable, Cloneable, Iterator<V>, Traversal<Element,V>, Traversal.Admin<Element,V>

public final class ElementValueTraversal<V>
extends AbstractLambdaTraversal<Element,V>

More efficiently extracts a value from an Element or Map to avoid strategy application costs. Note that as of 3.4.5 this class is now poorly named as it was originally designed to work with Element only. In future 3.5.0 this class will likely be renamed but to ensure that we get this revised functionality for Map without introducing a breaking change this name will remain the same.

Author:

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

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.tinkerpop.gremlin.process.traversal.Traversal

Traversal.Admin<S,E>, Traversal.Exceptions, Traversal.Symbols

Field Summary

Fields inherited from class org.apache.tinkerpop.gremlin.process.traversal.lambda.AbstractLambdaTraversal

bypassTraversal

Constructor Summary

Constructors

Constructor and Description
ElementValueTraversal(String propertyKey)

Method Summary

Modifier and Type	Method and Description
void	addStart(Traverser.Admin<Element> start) Add a single Traverser.Admin object to the head of the traversal.
boolean	equals(Object other)
String	getPropertyKey()
int	hashCode()
boolean	hasNext()
V	next()
String	toString()

Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.lambda.AbstractLambdaTraversal

addStep, applyStrategies, clone, getBytecode, getGraph, getParent, getSideEffects, getSteps, getStrategies, getTraverserGenerator, getTraverserRequirements, isLocked, nextTraverser, removeStep, reset, setBypassTraversal, setGraph, setParent, setSideEffects, setStrategies

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin

addStarts, addStep, equals, getEndStep, getStartStep, getTraversalSource, getTraverserSetSupplier, removeStep

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

asAdmin, close, explain, fill, forEachRemaining, forEachRemaining, iterate, next, none, profile, promise, toBulkSet, toList, toSet, toStream, tryNext

Methods inherited from interface java.util.Iterator

remove

Constructor Detail

ElementValueTraversal

public ElementValueTraversal(String propertyKey)

Method Detail

next

public V next()

Specified by:

next in interface Iterator<V>

Overrides:

next in class AbstractLambdaTraversal<Element,V>

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<V>

Overrides:

hasNext in class AbstractLambdaTraversal<Element,V>

addStart

public void addStart(Traverser.Admin<Element> start)

Description copied from interface: Traversal.Admin

Add a single Traverser.Admin object to the head of the traversal. Users should typically not need to call this method. For dynamic inject of data, they should use InjectStep.

Specified by:

addStart in interface Traversal.Admin<Element,V>

Overrides:

addStart in class AbstractLambdaTraversal<Element,V>

Parameters:

start - a traverser to add to the traversal

getPropertyKey

public String getPropertyKey()

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractLambdaTraversal<Element,V>

equals

public boolean equals(Object other)

Overrides:

equals in class AbstractLambdaTraversal<Element,V>