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

Class AddPropertyStep<S extends Element>

java.lang.Object

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

org.apache.tinkerpop.gremlin.process.traversal.step.sideEffect.SideEffectStep<S>

org.apache.tinkerpop.gremlin.process.traversal.step.sideEffect.AddPropertyStep<S>

All Implemented Interfaces:

Serializable, AutoCloseable, Cloneable, Iterator<Traverser.Admin<S>>, Step<S,S>, Configuring, Deleting<Event.ElementPropertyChangedEvent>, Mutating<Event.ElementPropertyChangedEvent>, Parameterizing, Scoping, TraversalParent, Writing<Event.ElementPropertyChangedEvent>

public class AddPropertyStep<S extends Element>
extends SideEffectStep<S>
implements Writing<Event.ElementPropertyChangedEvent>, Deleting<Event.ElementPropertyChangedEvent>, TraversalParent, Scoping

Author:

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

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.tinkerpop.gremlin.process.traversal.step.Scoping

Scoping.KeyNotFoundException, Scoping.Variable

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
AddPropertyStep(Traversal.Admin traversal, VertexProperty.Cardinality cardinality, Object keyObject, Object valueObject)

Method Summary

Modifier and Type	Method	Description
AddPropertyStep<S>	clone()	Cloning is used to duplicate steps for the purpose of traversal optimization and OLTP replication.
void	configure(Object... keyValues)	Accept a configuration to the Step.
VertexProperty.Cardinality	getCardinality()
<S,E> List<Traversal.Admin<S,E>>	getLocalChildren()
CallbackRegistry<Event.ElementPropertyChangedEvent>	getMutatingCallbackRegistry()	Gets the callback registry for events that the step raises.
Parameters	getParameters()	Gets the parameters on the step.
Set<TraverserRequirement>	getRequirements()	Provide the necessary TraverserRequirement that must be met by the traverser in order for the step to function properly.
Set<String>	getScopeKeys()	Get the labels that this scoping step will access during the traversal
int	hashCode()
void	setTraversal(Traversal.Admin<?,?> parentTraversal)	Set the Traversal that this step is contained within.
protected void	sideEffect(Traverser.Admin<S> traverser)
String	toString()

Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.sideEffect.SideEffectStep

processNextStart

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

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

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.Scoping

getNullableScopeValue, getSafeScopeValue, getScopeValue

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

equals

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

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

Constructor Detail

AddPropertyStep

public AddPropertyStep(Traversal.Admin traversal,
                       VertexProperty.Cardinality cardinality,
                       Object keyObject,
                       Object valueObject)

Method Detail

getParameters

public Parameters getParameters()

Description copied from interface: Parameterizing

Gets the parameters on the step.

Specified by:

getParameters in interface Parameterizing

getScopeKeys

public Set<String> getScopeKeys()

Description copied from interface: Scoping

Get the labels that this scoping step will access during the traversal

Specified by:

getScopeKeys in interface Scoping

Returns:

the accessed labels of the scoping step

getLocalChildren

public <S,E> List<Traversal.Admin<S,E>> getLocalChildren()

Specified by:

getLocalChildren in interface TraversalParent

configure

public void configure(Object... keyValues)

Description copied from interface: Configuring

Accept a configuration to the Step. Note that this interface extends Parameterizing and so there is an expectation that the Step implementation will have a Parameters instance that will house any values passed to this method. Storing these configurations in Parameters is not a requirement however, IF the configuration is an expected option for the step and can be stored on a member field that can be accessed on the step by more direct means (i.e. like a getter method).

Specified by:

configure in interface Configuring

sideEffect

protected void sideEffect(Traverser.Admin<S> traverser)

Specified by:

sideEffect in class SideEffectStep<S extends Element>

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<S extends Element,S extends Element>

Returns:

the set of requirements

getMutatingCallbackRegistry

public CallbackRegistry<Event.ElementPropertyChangedEvent> getMutatingCallbackRegistry()

Description copied from interface: Mutating

Gets the callback registry for events that the step raises.

Specified by:

getMutatingCallbackRegistry in interface Mutating<S extends Element>

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractStep<S extends Element,S extends Element>

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<S extends Element,S extends Element>

Overrides:

setTraversal in class AbstractStep<S extends Element,S extends Element>

Parameters:

parentTraversal - the new traversal for this step

getCardinality

public VertexProperty.Cardinality getCardinality()

toString

public String toString()

Overrides:

toString in class AbstractStep<S extends Element,S extends Element>

clone

public AddPropertyStep<S> 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 Step.reset() is called. Moreover, the previous and next steps should be set to EmptyStep.

Specified by:

clone in interface Step<S extends Element,S extends Element>

Overrides:

clone in class AbstractStep<S extends Element,S extends Element>

Returns:

The cloned step