Package org.apache.jackrabbit.oak.osgi

Class OsgiWhiteboard

java.lang.Object

org.apache.jackrabbit.oak.osgi.OsgiWhiteboard

All Implemented Interfaces:

Whiteboard

public class OsgiWhiteboard
extends Object
implements Whiteboard

OSGi-based whiteboard implementation.

Constructor Summary

Constructors

Constructor	Description
OsgiWhiteboard(@NotNull BundleContext context)

Method Summary

Modifier and Type	Method	Description
<T> Registration	register(Class<T> type, T service, Map<?,?> properties)	Publishes the given service to the whiteboard.
<T> Tracker<T>	track(Class<T> type)	Returns a tracker for services of the given type.
<T> Tracker<T>	track(Class<T> type, Map<String,String> filterProperties)	Starts tracking services of the given type, with given attributes.

Methods inherited from class java.lang.Object

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

Constructor Details

OsgiWhiteboard

public OsgiWhiteboard(@NotNull
 @NotNull BundleContext context)

Method Details

register

public <T> Registration register(Class<T> type,
 T service,
 Map<?,?> properties)

Description copied from interface: Whiteboard

Publishes the given service to the whiteboard. Use the returned registration object to unregister the service.

Specified by:

register in interface Whiteboard

Parameters:

type - type of the service

service - service instance

properties - service properties. Those need to use String keys, but for backwards compatibility reasons this is not enforced via generics.

Returns:

service registration

track

public <T> Tracker<T> track(Class<T> type)

Returns a tracker for services of the given type. The returned tracker is optimized for frequent Tracker.getServices() calls through the use of a pre-compiled list of services that's atomically updated whenever services are added, modified or removed.

Specified by:

track in interface Whiteboard

Parameters:

type - type of the services to track

Returns:

service tracker

track

public <T> Tracker<T> track(Class<T> type,
 Map<String,String> filterProperties)

Description copied from interface: Whiteboard

Starts tracking services of the given type, with given attributes.

Specified by:

track in interface Whiteboard

Parameters:

type - type of the services to track

filterProperties - only services with these properties will be tracked. Null keys are not permitted. Null values means that the property should be absent.

Returns:

service tracker