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

Class PropertiesStep<E>

java.lang.Object

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

org.apache.tinkerpop.gremlin.process.traversal.step.map.FlatMapStep<Element,E>

org.apache.tinkerpop.gremlin.process.traversal.step.map.PropertiesStep<E>

All Implemented Interfaces:

Serializable, Cloneable, Iterator<Traverser<E>>, Step<Element,E>

public class PropertiesStep<E>
extends FlatMapStep<Element,E>

Author:

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

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected String[]	propertyKeys
protected PropertyType	returnType

Fields inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep

id, label, nextEnd, nextStep, previousStep, starts, traversal, traverserStepIdSetByChild

Constructor Summary

Constructors

Constructor and Description
PropertiesStep(Traversal.Admin traversal, PropertyType propertyType, String... propertyKeys)

Method Summary

Modifier and Type	Method and Description
protected Iterator<E>	flatMap(Traverser.Admin<Element> traverser)
String[]	getPropertyKeys()
Set<TraverserRequirement>	getRequirements() Provide the necessary TraverserRequirement that must be met by the traverser in order for the step to function properly.
PropertyType	getReturnType()
String	toString()

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

processNextStart, reset

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

addStart, addStarts, clone, getId, getLabel, getNextStep, getPreviousStep, getTraversal, hasNext, next, setId, setLabel, setNextStep, setPreviousStep, setTraversal

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Field Detail

propertyKeys

protected final String[] propertyKeys

returnType

protected final PropertyType returnType

Constructor Detail

PropertiesStep

public PropertiesStep(Traversal.Admin traversal,
                      PropertyType propertyType,
                      String... propertyKeys)

Method Detail

flatMap

protected Iterator<E> flatMap(Traverser.Admin<Element> traverser)

Specified by:

flatMap in class FlatMapStep<Element,E>

getReturnType

public PropertyType getReturnType()

getPropertyKeys

public String[] getPropertyKeys()

toString

public String toString()

Overrides:

toString in class AbstractStep<Element,E>

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