Package org.apache.tinkerpop.gremlin.process.traversal.step.util.event

Class EventUtil

java.lang.Object

org.apache.tinkerpop.gremlin.process.traversal.step.util.event.EventUtil

public final class EventUtil
extends Object

Logic for registering events with the EventStrategy and the callback registry. Extracting this logic allows providers to reuse these utilities more readily.

Method Summary

Modifier and Type	Method	Description
static EventStrategy	forceGetEventStrategy(Traversal.Admin<Object,Object> traversal)	Register a vertex property addition event with the callback registry.
static boolean	hasAnyCallbacks(CallbackRegistry<? extends Event> callbackRegistry)	Register a vertex property addition event with the callback registry.
static void	registerEdgeCreation(CallbackRegistry<Event.EdgeAddedEvent> callbackRegistry, Traversal.Admin<Object,Object> traversal, Edge addedEdge)	Register a vertex property addition event with the callback registry.
static void	registerEdgeCreationWithGenericEventRegistry(CallbackRegistry<Event> callbackRegistry, Traversal.Admin<Object,Object> traversal, Edge addedEdge)	Register a vertex property addition event with the callback registry.
static void	registerEdgePropertyChange(CallbackRegistry<Event> callbackRegistry, Traversal.Admin<Object,Object> traversal, Edge edge, String key, Object value)	Register an edge property change event with the callback registry.
static void	registerElementRemoval(CallbackRegistry<Event> callbackRegistry, Traversal.Admin<Object,Object> traversal, Element elementForRemoval)	Register a vertex property addition event with the callback registry.
static void	registerLabelChange(CallbackRegistry<Event.ElementLabelChangedEvent> callbackRegistry, Traversal.Admin<?,?> traversal, Element element, Set<String> oldLabels, Set<String> newLabels)	Register a label change event with the callback registry.
static void	registerPropertyChange(CallbackRegistry<Event.ElementPropertyChangedEvent> callbackRegistry, EventStrategy es, Element affectedElement, Property removedProperty, Object value, Object[] vertexPropertyKeyValues)	Register a vertex property addition event with the callback registry.
static void	registerPropertyRemoval(CallbackRegistry<Event> callbackRegistry, Traversal.Admin<Object,Object> traversal, Property elementForRemoval)	Register a vertex property addition event with the callback registry.
static void	registerVertexCreation(CallbackRegistry<Event.VertexAddedEvent> callbackRegistry, Traversal.Admin<Object,Object> traversal, Vertex addedVertex)	Register a vertex property addition event with the callback registry.
static void	registerVertexCreationWithGenericEventRegistry(CallbackRegistry<Event> callbackRegistry, Traversal.Admin<Object,Object> traversal, Vertex addedVertex)	Register a vertex property addition event with the callback registry.
static void	registerVertexPropertyChange(CallbackRegistry<Event> callbackRegistry, Traversal.Admin<Object,Object> traversal, Vertex vertex, String key, Object value)	Register a vertex property change event with the callback registry.

Methods inherited from class java.lang.Object

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

Method Details

registerVertexPropertyChange

public static void registerVertexPropertyChange(CallbackRegistry<Event> callbackRegistry,
 Traversal.Admin<Object,Object> traversal,
 Vertex vertex,
 String key,
 Object value)

Register a vertex property change event with the callback registry.

registerEdgePropertyChange

public static void registerEdgePropertyChange(CallbackRegistry<Event> callbackRegistry,
 Traversal.Admin<Object,Object> traversal,
 Edge edge,
 String key,
 Object value)

Register an edge property change event with the callback registry.

registerEdgeCreation

public static void registerEdgeCreation(CallbackRegistry<Event.EdgeAddedEvent> callbackRegistry,
 Traversal.Admin<Object,Object> traversal,
 Edge addedEdge)

Register a vertex property addition event with the callback registry.

registerEdgeCreationWithGenericEventRegistry

public static void registerEdgeCreationWithGenericEventRegistry(CallbackRegistry<Event> callbackRegistry,
 Traversal.Admin<Object,Object> traversal,
 Edge addedEdge)

Register a vertex property addition event with the callback registry.

registerVertexCreation

public static void registerVertexCreation(CallbackRegistry<Event.VertexAddedEvent> callbackRegistry,
 Traversal.Admin<Object,Object> traversal,
 Vertex addedVertex)

Register a vertex property addition event with the callback registry.

registerVertexCreationWithGenericEventRegistry

public static void registerVertexCreationWithGenericEventRegistry(CallbackRegistry<Event> callbackRegistry,
 Traversal.Admin<Object,Object> traversal,
 Vertex addedVertex)

Register a vertex property addition event with the callback registry.

registerElementRemoval

public static void registerElementRemoval(CallbackRegistry<Event> callbackRegistry,
 Traversal.Admin<Object,Object> traversal,
 Element elementForRemoval)

Register a vertex property addition event with the callback registry.

registerPropertyRemoval

public static void registerPropertyRemoval(CallbackRegistry<Event> callbackRegistry,
 Traversal.Admin<Object,Object> traversal,
 Property elementForRemoval)

Register a vertex property addition event with the callback registry.

registerPropertyChange

public static void registerPropertyChange(CallbackRegistry<Event.ElementPropertyChangedEvent> callbackRegistry,
 EventStrategy es,
 Element affectedElement,
 Property removedProperty,
 Object value,
 Object[] vertexPropertyKeyValues)

Register a vertex property addition event with the callback registry.

registerLabelChange

public static void registerLabelChange(CallbackRegistry<Event.ElementLabelChangedEvent> callbackRegistry,
 Traversal.Admin<?,?> traversal,
 Element element,
 Set<String> oldLabels,
 Set<String> newLabels)

Register a label change event with the callback registry.

hasAnyCallbacks

public static boolean hasAnyCallbacks(CallbackRegistry<? extends Event> callbackRegistry)

Register a vertex property addition event with the callback registry.

forceGetEventStrategy

public static EventStrategy forceGetEventStrategy(Traversal.Admin<Object,Object> traversal)

Register a vertex property addition event with the callback registry.