org.apache.felix.ipojo

Interface ContextSource

All Known Implementing Classes:

InstanceConfigurationSource, SystemPropertiesSource

public interface ContextSource

Context Source service interface. A context source advertises of context changes.

Author:

Felix Project Team

Method Summary

Modifier and Type	Method and Description
java.util.Dictionary	getContext() Gets the entire context.
java.lang.Object	getProperty(java.lang.String property) Gets the current value of the given property.
void	registerContextListener(ContextListener listener, java.lang.String[] properties) Registers a context listener on the given set of properties.
void	unregisterContextListener(ContextListener listener) Unregisters the given context listener.

Method Detail

getProperty

java.lang.Object getProperty(java.lang.String property)

Gets the current value of the given property.

Parameters:

property - property name

Returns:

the property value (null if unknown)

getContext

java.util.Dictionary getContext()

Gets the entire context.

Returns:

the dictionary [Property, Value]

registerContextListener

void registerContextListener(ContextListener listener,
                             java.lang.String[] properties)

Registers a context listener on the given set of properties. The listener will be notified of every changes made on monitored properties.

Parameters:

listener - the context listener to register.

properties - property set monitored by the listener.

unregisterContextListener

void unregisterContextListener(ContextListener listener)

Unregisters the given context listener.

Parameters:

listener - the listener to unregister.