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

All Methods Static Methods Concrete Methods
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`	`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 Detail

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.