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, AutoCloseable, Cloneable, Iterator<Traverser.Admin<E>>, Step<Element,E>

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

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, labels, nextEnd, nextStep, previousStep, starts, traversal, traverserStepIdAndLabelsSetByChild

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
void	close()
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()
int	hashCode()
String	toString()

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

closeIterator, processNextStart, reset

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

addLabel, addStart, addStarts, clone, equals, getId, getLabels, getNextStep, getPreviousStep, getTraversal, hasNext, next, removeLabel, setId, setNextStep, setPreviousStep, setTraversal

Methods inherited from class java.lang.Object

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

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

equals

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>

hashCode

public int hashCode()

Overrides:

hashCode 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.

Specified by:

getRequirements in interface Step<Element,E>

Returns:

the set of requirements

close

public void close()
           throws Exception

Specified by:

close in interface AutoCloseable

Throws:

Exception