Package org.apache.jackrabbit.oak.spi.whiteboard

Class DefaultWhiteboard

java.lang.Object

org.apache.jackrabbit.oak.spi.whiteboard.DefaultWhiteboard

All Implemented Interfaces:

Whiteboard

public class DefaultWhiteboard
extends Object
implements Whiteboard

Constructor Summary

Constructors

Constructor	Description
DefaultWhiteboard()

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)	Starts tracking 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

DefaultWhiteboard

public DefaultWhiteboard()

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)

Description copied from interface: Whiteboard

Starts tracking services of the given type.

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