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

Class RequirementsStep<S>

java.lang.Object

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

org.apache.tinkerpop.gremlin.process.traversal.step.util.RequirementsStep<S>

All Implemented Interfaces:

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

public final class RequirementsStep<S>
extends AbstractStep<S,S>

Author:

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

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
RequirementsStep(Traversal.Admin traversal, Set<TraverserRequirement> requirements)

Method Summary

Modifier and Type	Method	Description
void	addRequirement(TraverserRequirement requirement)
Set<TraverserRequirement>	getRequirements()	Provide the necessary TraverserRequirement that must be met by the traverser in order for the step to function properly.
protected Traverser.Admin<S>	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 Details

RequirementsStep

public RequirementsStep(Traversal.Admin traversal,
 Set<TraverserRequirement> requirements)

Method Details

addRequirement

public void addRequirement(TraverserRequirement requirement)

getRequirements

public Set<TraverserRequirement> getRequirements()

Description copied from interface: Step

Provide the necessary TraverserRequirement that must be met by the traverser in order for the step to function properly. The provided default implements returns an empty set.

Returns:

the set of requirements

processNextStart

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

Specified by:

processNextStart in class AbstractStep<S,S>

Throws:

NoSuchElementException