public interface UPnPEventListener
The notification call from the UPnP Service to any
UPnPEventListener
object must be done asynchronous with respect
to the originator (in a separate thread).
Upon registration of the UPnP Event Listener service with the Framework, the service is notified for each variable which it listens for with an initial event containing the current value of the variable. Subsequent notifications only happen on changes of the value of the variable.
A UPnP Event Listener service filter the events it receives. This event set is limited using a standard framework filter expression which is specified when the listener service is registered.
The filter is specified in a property named "upnp.filter" and has as a value
an object of type org.osgi.framework.Filter
.
When the Filter is evaluated, the folowing keywords are recognized as defined
as literal constants in the UPnPDevice
class.
The valid subset of properties for the registration of UPnP Event Listener services are:
UPnPDevice.TYPE
-- Which type of device to listen for events.
UPnPDevice.ID
-- The ID of a specific device to listen for
events.UPnPService.TYPE
-- The type of a specific service to listen
for events.UPnPService.ID
-- The ID of a specific service to listen for
events.Modifier and Type | Field and Description |
---|---|
static String |
UPNP_FILTER
Key for a service property having a value that is an object of type
org.osgi.framework.Filter and that is used to limit received
events. |
Modifier and Type | Method and Description |
---|---|
void |
notifyUPnPEvent(String deviceId,
String serviceId,
Dictionary events)
Callback method that is invoked for received events.
|
static final String UPNP_FILTER
org.osgi.framework.Filter
and that is used to limit received
events.void notifyUPnPEvent(String deviceId, String serviceId, Dictionary events)
Dictionary
object. Each entry
has a String
key representing the event name (= state variable
name) and the new value of the state variable. The class of the value
object must match the class specified by the UPnP State Variable
associated with the event. This method must be called asynchronouslydeviceId
- ID of the device sending the eventsserviceId
- ID of the service sending the eventsevents
- Dictionary
object containing the new values for
the state variables that have changed.Copyright © 2006-2014 OSGi Alliance. All Rights Reserved.