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

Class LengthLocalStep<S,E>

java.lang.Object

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

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

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

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

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

All Implemented Interfaces:

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

public final class LengthLocalStep<S,E>
extends StringLocalStep<S,E>

Reference implementation for length() step, a mid-traversal step which returns the length of the incoming string traverser. Null values are not processed and remain as null when returned. If the incoming traverser is a non-String value then an IllegalArgumentException will be thrown.

Author:

David Bechberger (http://bechberger.com), Yang Xia (http://github.com/xiazcy)

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
LengthLocalStep(Traversal.Admin traversal)

Method Summary

Modifier and Type	Method	Description
protected E	applyStringOperation(String item)
String	getStepName()

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

getRequirements, map

Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.map.ScalarMapStep

processNextStart

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, reset, 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

LengthLocalStep

public LengthLocalStep(Traversal.Admin traversal)

Method Detail

applyStringOperation

protected E applyStringOperation(String item)

Specified by:

applyStringOperation in class StringLocalStep<S,E>

getStepName

public String getStepName()

Specified by:

getStepName in class StringLocalStep<S,E>