EventHook
Date: 2016-06-24

org.osgi.framework.hooks.service

## Interface EventHook

- Deprecated.
  As of 1.1. Replaced by `EventListenerHook`.

      @ConsumerType
      public interface EventHook

  OSGi Framework Service Event Hook Service.

  Bundles registering this service will be called during framework service (register, modify, and unregister service) operations.

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `event(ServiceEvent event, java.util.Collection<BundleContext> contexts)` Deprecated. Event hook method.

- - ### Method Detail

    - #### event

          void event(ServiceEvent event,
                   java.util.Collection<BundleContext> contexts)

      Deprecated.
      Event hook method. This method is called prior to service event delivery when a publishing bundle registers, modifies or unregisters a service. This method can filter the bundles which receive the event.
      Parameters:
        `event` - The service event to be delivered.
        `contexts` - A collection of Bundle Contexts for bundles which have listeners to which the specified event will be delivered. The implementation of this method may remove bundle contexts from the collection to prevent the event from being delivered to the associated bundles. The collection supports all the optional `Collection` operations except `add` and `addAll`. Attempting to add to the collection will result in an `UnsupportedOperationException`. The collection is not synchronized.