livespace.osgi
Class Dependencies

java.lang.Object
  livespace.osgi.Dependency
      livespace.osgi.Dependencies

All Implemented Interfaces:

Iterable<Dependency>

public class Dependencies
extends Dependency
implements Iterable<Dependency>

Represents zero or more dependencies, all of which must be ready before this one is.

Author:

Matthew Phillips

Field Summary

Fields inherited from class livespace.osgi.Dependency

notReadyListeners, readyListeners

Constructor Summary

Dependencies()

Method Summary

void	add(Dependency dependency) Add a sub-dependency to the set.
void	add(Object name, Dependency dependency) Add a sub-dependency to the set with a given name.
Dependency	childNamed(String name)
boolean	isReady() True if the dependency is ready to be used.
Iterator<Dependency>	iterator() Return an iterator over the dependencies.
void	start() Start the dependency looking for its required resources.
void	stop() Stop the dependency looking for its required resources.
Object	value() Not supported.
Object	value(String name) Shortcut to get the resource for a sub-dependency.

Methods inherited from class livespace.osgi.Dependency

setReady, updateReady

Methods inherited from class java.lang.Object

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

Constructor Detail

Dependencies

public Dependencies()

Method Detail

add

public void add(Dependency dependency)

Add a sub-dependency to the set.

Parameters:

dependency - The dependency to add.

See Also:

add(Object, Dependency)

add

public void add(Object name,
                Dependency dependency)

Add a sub-dependency to the set with a given name. The name can be later used with several methods to lookup the dependency.

iterator

public Iterator<Dependency> iterator()

Return an iterator over the dependencies.

Specified by:

iterator in interface Iterable<Dependency>

start

public void start()
           throws Exception

Description copied from class: Dependency

Start the dependency looking for its required resources. The ready state will change when it is (which may be immediately as part of this call).

Specified by:

start in class Dependency

Throws:

Exception

stop

public void stop()
          throws Exception

Description copied from class: Dependency

Stop the dependency looking for its required resources. The ready state may change, perhaps immediately as part of this call.

Specified by:

stop in class Dependency

Throws:

Exception

value

public Object value()

Not supported. See value(String).

Specified by:

value in class Dependency

value

public Object value(String name)
             throws IllegalArgumentException

Shortcut to get the resource for a sub-dependency.

Parameters:

name - The sub-dependency name.

Throws:

IllegalArgumentException - if no name matches.

See Also:

childNamed(String)

childNamed

public Dependency childNamed(String name)

isReady

public boolean isReady()

Description copied from class: Dependency

True if the dependency is ready to be used.

Specified by:

isReady in class Dependency