org.apache.tinkerpop.gremlin.process.traversal.strategy.decoration

Class EventStrategy

java.lang.Object

org.apache.tinkerpop.gremlin.process.traversal.strategy.AbstractTraversalStrategy<TraversalStrategy.DecorationStrategy>

org.apache.tinkerpop.gremlin.process.traversal.strategy.decoration.EventStrategy

All Implemented Interfaces:

Serializable, Comparable<Class<? extends TraversalStrategy>>, TraversalStrategy<TraversalStrategy.DecorationStrategy>, TraversalStrategy.DecorationStrategy

public final class EventStrategy
extends AbstractTraversalStrategy<TraversalStrategy.DecorationStrategy>
implements TraversalStrategy.DecorationStrategy

A strategy that raises events when Mutating steps are encountered and successfully executed.

Note that this implementation requires a Graph on the Traversal instance. If that is not present an IllegalStateException will be thrown. Finally, this strategy is meant for use on the JVM only and has no analogous implementation in other Gremlin Language Variants.

Author:

Stephen Mallette (http://stephen.genoprime.com)

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EventStrategy.Builder
static class	EventStrategy.DefaultEventQueue Immediately notifies all listeners as events arrive.
static interface	EventStrategy.Detacher A common interface for detachment.
static class	EventStrategy.Detachment Options for detaching elements from the graph during eventing.
static interface	EventStrategy.EventQueue Gathers messages from callbacks and fires them to listeners.
class	EventStrategy.EventStrategyCallback
static class	EventStrategy.TransactionalEventQueue Stores events in a queue that builds up until the transaction is committed which then fires them in the order they were received.

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

TraversalStrategy.DecorationStrategy, TraversalStrategy.FinalizationStrategy, TraversalStrategy.OptimizationStrategy, TraversalStrategy.ProviderOptimizationStrategy, TraversalStrategy.VerificationStrategy

Field Summary

Fields inherited from interface org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy

STRATEGY

Method Summary

Modifier and Type	Method and Description
void	apply(Traversal.Admin<?,?> traversal)
static EventStrategy.Builder	build()
<R> R	detach(R attached) Applies the appropriate detach operation to elements that will be raised in mutation events.
EventStrategy.Detachment	getDetachment()

Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.strategy.AbstractTraversalStrategy

equals, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.DecorationStrategy

compareTo, getTraversalCategory

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

applyPost, applyPrior, getConfiguration

Method Detail

getDetachment

public EventStrategy.Detachment getDetachment()

detach

public <R> R detach(R attached)

Applies the appropriate detach operation to elements that will be raised in mutation events.

apply

public void apply(Traversal.Admin<?,?> traversal)

Specified by:

apply in interface TraversalStrategy<TraversalStrategy.DecorationStrategy>

build

public static EventStrategy.Builder build()