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

Class PropertyMapStep<K,E>

java.lang.Object

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

org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep<Element,Map<K,E>>

org.apache.tinkerpop.gremlin.process.traversal.step.map.PropertyMapStep<K,E>

All Implemented Interfaces:

Serializable, AutoCloseable, Cloneable, Iterator<Traverser.Admin<Map<K,E>>>, Step<Element,Map<K,E>>, TraversalParent

public class PropertyMapStep<K,E>
extends MapStep<Element,Map<K,E>>
implements TraversalParent

Author:

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

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	includeTokens
protected String[]	propertyKeys
protected Traversal.Admin<Element,? extends Property>	propertyTraversal
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
PropertyMapStep(Traversal.Admin traversal, boolean includeTokens, PropertyType propertyType, String... propertyKeys)

Method Summary

Modifier and Type	Method and Description
PropertyMapStep<K,E>	clone() Cloning is used to duplicate steps for the purpose of traversal optimization and OLTP replication.
List<Traversal.Admin<Element,? extends Property>>	getLocalChildren()
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()
boolean	isIncludeTokens()
protected Map<K,E>	map(Traverser.Admin<Element> traverser)
void	setPropertyTraversal(Traversal.Admin<Element,? extends Property> propertyTraversal)
void	setTraversal(Traversal.Admin<?,?> parentTraversal) Set the Traversal that this step is contained within.
String	toString()

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

processNextStart

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

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

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.TraversalParent

addGlobalChild, addLocalChild, asStep, close, getGlobalChildren, getSelfAndChildRequirements, integrateChild, removeGlobalChild, removeLocalChild

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

includeTokens

protected final boolean includeTokens

propertyTraversal

protected Traversal.Admin<Element,? extends Property> propertyTraversal

Constructor Detail

PropertyMapStep

public PropertyMapStep(Traversal.Admin traversal,
                       boolean includeTokens,
                       PropertyType propertyType,
                       String... propertyKeys)

Method Detail

map

protected Map<K,E> map(Traverser.Admin<Element> traverser)

Specified by:

map in class MapStep<Element,Map<K,E>>

getLocalChildren

public List<Traversal.Admin<Element,? extends Property>> getLocalChildren()

Specified by:

getLocalChildren in interface TraversalParent

setPropertyTraversal

public void setPropertyTraversal(Traversal.Admin<Element,? extends Property> propertyTraversal)

getReturnType

public PropertyType getReturnType()

getPropertyKeys

public String[] getPropertyKeys()

isIncludeTokens

public boolean isIncludeTokens()

toString

public String toString()

Overrides:

toString in class AbstractStep<Element,Map<K,E>>

clone

public PropertyMapStep<K,E> clone()

Description copied from interface: Step

Cloning is used to duplicate steps for the purpose of traversal optimization and OLTP replication. When cloning a step, it is important that the steps, the cloned step is equivalent to the state of the step when reset() is called. Moreover, the previous and next steps should be set to EmptyStep.

Specified by:

clone in interface Step<Element,Map<K,E>>

Overrides:

clone in class AbstractStep<Element,Map<K,E>>

Returns:

The cloned step

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractStep<Element,Map<K,E>>

setTraversal

public void setTraversal(Traversal.Admin<?,?> parentTraversal)

Description copied from interface: Step

Set the Traversal that this step is contained within.

Specified by:

setTraversal in interface Step<Element,Map<K,E>>

Overrides:

setTraversal in class AbstractStep<Element,Map<K,E>>

Parameters:

parentTraversal - the new traversal for this step

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,Map<K,E>>

Returns:

the set of requirements