org.apache.tinkerpop.gremlin.process.traversal.traverser

Class B_O_Traverser<T>

java.lang.Object

org.apache.tinkerpop.gremlin.process.traversal.traverser.util.AbstractTraverser<T>

org.apache.tinkerpop.gremlin.process.traversal.traverser.O_Traverser<T>

org.apache.tinkerpop.gremlin.process.traversal.traverser.B_O_Traverser<T>

All Implemented Interfaces:

Serializable, Cloneable, Comparable<Traverser<T>>, Traverser<T>, Traverser.Admin<T>, Attachable<T>

Direct Known Subclasses:

B_O_S_SE_SL_Traverser

public class B_O_Traverser<T>
extends O_Traverser<T>

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.Traverser

Traverser.Admin<T>

Nested classes/interfaces inherited from interface org.apache.tinkerpop.gremlin.structure.util.Attachable

Attachable.Exceptions, Attachable.Method

Field Summary

Fields

Modifier and Type	Field and Description
protected long	bulk
protected String	future

Fields inherited from class org.apache.tinkerpop.gremlin.process.traversal.traverser.O_Traverser

tags

Fields inherited from class org.apache.tinkerpop.gremlin.process.traversal.traverser.util.AbstractTraverser

t

Fields inherited from interface org.apache.tinkerpop.gremlin.process.traversal.Traverser.Admin

HALT

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	B_O_Traverser()
	B_O_Traverser(T t, long initialBulk)

Method Summary

Modifier and Type	Method and Description
long	bulk() A traverser may represent a grouping of traversers to allow for more efficient data propagation.
boolean	equals(Object object)
String	getStepId() Get the step id of where the traverser is located.
void	merge(Traverser.Admin<?> other) When two traversers are have equality with each other, then they can be merged.
void	setBulk(long count) Set the number of traversers represented by this traverser.
void	setStepId(String stepId) Set the step id of where the traverser is located.

Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.traverser.O_Traverser

getTags, split, split

Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.traverser.util.AbstractTraverser

addLabels, attach, clone, detach, dropLabels, dropPath, get, getSideEffects, hashCode, incrLoops, keepLabels, loops, path, resetLoops, sack, sack, set, setSideEffects, toString

Methods inherited from class java.lang.Object

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

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

isHalted

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

asAdmin, compareTo, path, path, sideEffects, sideEffects

Field Detail

bulk

protected long bulk

future

protected String future

Constructor Detail

B_O_Traverser

protected B_O_Traverser()

B_O_Traverser

public B_O_Traverser(T t,
                     long initialBulk)

Method Detail

setBulk

public void setBulk(long count)

Description copied from interface: Traverser.Admin

Set the number of traversers represented by this traverser.

Specified by:

setBulk in interface Traverser.Admin<T>

Overrides:

setBulk in class AbstractTraverser<T>

Parameters:

count - the number of traversers

bulk

public long bulk()

Description copied from interface: Traverser

A traverser may represent a grouping of traversers to allow for more efficient data propagation.

Specified by:

bulk in interface Traverser<T>

Overrides:

bulk in class AbstractTraverser<T>

Returns:

the number of traversers represented in this traverser.

merge

public void merge(Traverser.Admin<?> other)

Description copied from interface: Traverser.Admin

When two traversers are have equality with each other, then they can be merged. This method is used to merge the traversers into a single traverser. This is used for optimization where instead of enumerating all traversers, they can be counted.

Specified by:

merge in interface Traverser.Admin<T>

Overrides:

merge in class O_Traverser<T>

Parameters:

other - the other traverser to merge into this traverser. Once merged, the other can be garbage collected.

getStepId

public String getStepId()

Description copied from interface: Traverser.Admin

Get the step id of where the traverser is located. This is typically used in multi-machine systems that require the movement of traversers between different traversal instances.

Specified by:

getStepId in interface Traverser.Admin<T>

Overrides:

getStepId in class AbstractTraverser<T>

Returns:

The future step for the traverser

setStepId

public void setStepId(String stepId)

Description copied from interface: Traverser.Admin

Set the step id of where the traverser is located. If the future is Traverser.Admin.HALT, then Traverser.Admin.isHalted() is true.

Specified by:

setStepId in interface Traverser.Admin<T>

Overrides:

setStepId in class AbstractTraverser<T>

Parameters:

stepId - The future step of the traverser

equals

public boolean equals(Object object)

Overrides:

equals in class AbstractTraverser<T>