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

Class VertexProgramStep

java.lang.Object

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

org.apache.tinkerpop.gremlin.process.computer.traversal.step.map.VertexProgramStep

All Implemented Interfaces:

Serializable, Cloneable, Iterator<Traverser.Admin<ComputerResult>>, VertexComputing, Step<ComputerResult,ComputerResult>

Direct Known Subclasses:

ConnectedComponentVertexProgramStep, HadoopIoStep, PageRankVertexProgramStep, PeerPressureVertexProgramStep, ProgramVertexProgramStep, ShortestPathVertexProgramStep, TraversalVertexProgramStep

public abstract class VertexProgramStep
extends AbstractStep<ComputerResult,ComputerResult>
implements VertexComputing

Author:

Marko A. Rodriguez (http://markorodriguez.com), Stephen Mallette (http://stephen.genoprime.com)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Computer	computer
protected boolean	first
static String	ROOT_TRAVERSAL
static String	STEP_ID

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 and Description
VertexProgramStep(Traversal.Admin traversal)

Method Summary

Modifier and Type	Method and Description
Computer	getComputer() Get the Computer for generating the GraphComputer.
protected boolean	isEndStep()
protected boolean	previousTraversalVertexProgram()
protected Traverser.Admin<ComputerResult>	processNextStart()
void	setComputer(Computer computer) Set the Computer to be used to generate the GraphComputer.

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, reset, setId, setNextStep, setPreviousStep, setTraversal, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.tinkerpop.gremlin.process.computer.traversal.step.VertexComputing

generateProgram

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

equals, getRequirements

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Field Detail

ROOT_TRAVERSAL

public static final String ROOT_TRAVERSAL

See Also:

Constant Field Values

STEP_ID

public static final String STEP_ID

See Also:

Constant Field Values

computer

protected Computer computer

first

protected boolean first

Constructor Detail

VertexProgramStep

public VertexProgramStep(Traversal.Admin traversal)

Method Detail

processNextStart

protected Traverser.Admin<ComputerResult> processNextStart()
                                                    throws NoSuchElementException

Specified by:

processNextStart in class AbstractStep<ComputerResult,ComputerResult>

Throws:

NoSuchElementException

getComputer

public Computer getComputer()

Description copied from interface: VertexComputing

Get the Computer for generating the GraphComputer. Inferences on the state of the Step within the Traversal can be use applied here.

Specified by:

getComputer in interface VertexComputing

Returns:

the computer specification for generating the graph computer.

setComputer

public void setComputer(Computer computer)

Description copied from interface: VertexComputing

Set the Computer to be used to generate the GraphComputer.

Specified by:

setComputer in interface VertexComputing

Parameters:

computer - the computer specification.

previousTraversalVertexProgram

protected boolean previousTraversalVertexProgram()

isEndStep

protected boolean isEndStep()