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

Class SubstringLocalStep<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.SubstringLocalStep<S,E>

All Implemented Interfaces:

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

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

Reference implementation for substring step, a mid-traversal step which returns a substring of the incoming string traverser with a 0-based start index (inclusive) and optionally an end index (exclusive). If the start index is negative then it will begin at the specified index counted from the end of the string, or 0 if exceeding the string length. Likewise, if the end index is negative then it will end at the specified index counted from the end of the string, or 0 if exceeding the string length. End index is optional, if it is not specified or if it exceeds the length of the string then all remaining characters will be returned. End index <= start index will return the empty string. 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
SubstringLocalStep(Traversal.Admin traversal, Integer startIndex)
SubstringLocalStep(Traversal.Admin traversal, Integer startIndex, Integer endIndex)

Method Summary

Modifier and Type	Method	Description
protected E	applyStringOperation(String item)
Integer	getEnd()
Integer	getStart()
String	getStepName()
int	hashCode()

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

getRequirements, getTrimmedString, 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, 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 Details

SubstringLocalStep

public SubstringLocalStep(Traversal.Admin traversal,
 Integer startIndex,
 Integer endIndex)

SubstringLocalStep

public SubstringLocalStep(Traversal.Admin traversal,
 Integer startIndex)

Method Details

getStart

public Integer getStart()

getEnd

public Integer getEnd()

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>

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractStep<S,E>