程序包 org.osgi.framework

类 ServiceEvent

  • 所有已实现的接口:
    java.io.Serializable
    public class ServiceEvent
extends java.util.EventObject
    An event from the Framework describing a service lifecycle change.

    ServiceEvent objects are delivered to ServiceListeners and AllServiceListeners when a change occurs in this service's lifecycle. A type code is used to identify the event type for future extendability.

    OSGi Alliance reserves the right to extend the set of types.

    作者:
    $Id: b27a941cb68e6416825b1b717090a2eb098733f3 $
    另请参阅:
    ServiceListener, AllServiceListener, 序列化表格

    • 字段概要

      字段 
      修饰符和类型 字段 说明
      static int MODIFIED
      The properties of a registered service have been modified.
      static int MODIFIED_ENDMATCH
      The properties of a registered service have been modified and the new properties no longer match the listener's filter.
      static int REGISTERED
      This service has been registered.
      static int UNREGISTERING
      This service is in the process of being unregistered.

      • 从类继承的字段 java.util.EventObject

        source

    • 方法概要

      所有方法 实例方法 具体方法 
      修饰符和类型 方法 说明
      ServiceReference<?> getServiceReference()
      Returns a reference to the service that had a change occur in its lifecycle.
      int getType()
      Returns the type of event.

      • 从类继承的方法 java.util.EventObject

        getSource, toString

      • 从类继承的方法 java.lang.Object

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

    • 字段详细资料

      • UNREGISTERING

        public static final int UNREGISTERING
        This service is in the process of being unregistered.

        This event is synchronously delivered before the service has completed unregistering.

        If a bundle is using a service that is UNREGISTERING, the bundle should release its use of the service when it receives this event. If the bundle does not release its use of the service when it receives this event, the Framework will automatically release the bundle's use of the service while completing the service unregistration operation.

        另请参阅:
        ServiceRegistration.unregister(), BundleContext.ungetService(ServiceReference), 常量字段值

      • MODIFIED_ENDMATCH

        public static final int MODIFIED_ENDMATCH
        The properties of a registered service have been modified and the new properties no longer match the listener's filter.

        This event is synchronously delivered after the service properties have been modified. This event is only delivered to listeners which were added with a non-null filter where the filter matched the service properties prior to the modification but the filter does not match the modified service properties.

        从以下版本开始:
        1.5
        另请参阅:
        ServiceRegistration.setProperties(Dictionary), 常量字段值

    • 构造器详细资料

      • ServiceEvent

        public ServiceEvent​(int type,
                    ServiceReference<?> reference)
        Creates a new service event object.
        参数:
        type - The event type.
        reference - A ServiceReference object to the service that had a lifecycle change.

    • 方法详细资料

      • getServiceReference

        public ServiceReference<?> getServiceReference()
        Returns a reference to the service that had a change occur in its lifecycle.

        This reference is the source of the event.

        返回:
        Reference to the service that had a lifecycle change.