org.apache.felix.ipojo.composite.service.instantiator
Class ServiceDependencyHandler

java.lang.Object
  org.apache.felix.ipojo.Handler
      org.apache.felix.ipojo.composite.CompositeHandler
          org.apache.felix.ipojo.composite.service.instantiator.ServiceDependencyHandler

All Implemented Interfaces:

DependencyStateListener

public class ServiceDependencyHandler
extends CompositeHandler
implements DependencyStateListener

Service Instantiator Class. This handler allows to instantiate service instance inside the composition.

Author:

Felix Project Team

Field Summary

Fields inherited from class org.apache.felix.ipojo.composite.CompositeHandler

HANDLER_TYPE

Fields inherited from class org.apache.felix.ipojo.Handler

HANDLER_LEVEL_PROPERTY, HANDLER_NAME_PROPERTY, HANDLER_NAMESPACE_PROPERTY, HANDLER_TYPE_PROPERTY, m_instance, m_isValid

Constructor Summary

ServiceDependencyHandler()

Method Summary

void	configure(Element metadata, Dictionary conf) Configure the handler.
HandlerDescription	getDescription() Get the service instantiator handler description.
List	getInstances()
List	getRequirements()
void	invalidate(DependencyModel dep) A service instance becomes invalid.
void	start() Start the service instantiator handler.
void	stateChanged(int newState) State change callback.
void	stop() Handler stop method.
void	validate(DependencyModel dep) An service instance becomes valid.

Methods inherited from class org.apache.felix.ipojo.composite.CompositeHandler

attach, getCompositeManager, getHandler, getLogger, setFactory

Methods inherited from class org.apache.felix.ipojo.Handler

debug, error, error, getHandlerManager, getValidity, info, initializeComponentFactory, isValid, reconfigure, setValidity, warn, warn

Methods inherited from class java.lang.Object

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

Constructor Detail

ServiceDependencyHandler

public ServiceDependencyHandler()

Method Detail

configure

public void configure(Element metadata,
                      Dictionary conf)
               throws ConfigurationException

Configure the handler.

Specified by:

configure in class Handler

Parameters:

metadata - : the metadata of the component

conf - : the instance configuration

Throws:

ConfigurationException - : the specification attribute is missing

See Also:

CompositeHandler

start

public void start()

Start the service instantiator handler. Start all created service instance.

Specified by:

start in class Handler

See Also:

CompositeHandler

stop

public void stop()

Handler stop method. Stop all created service instance.

Specified by:

stop in class Handler

See Also:

CompositeHandler

stateChanged

public void stateChanged(int newState)

State change callback. This method is used to freeze the set of used provider if the static binding policy is used.

Overrides:

stateChanged in class Handler

Parameters:

newState - : the new state of the underlying instance

See Also:

Handler.stateChanged(int)

validate

public void validate(DependencyModel dep)

An service instance becomes valid.

Specified by:

validate in interface DependencyStateListener

Parameters:

dep - : dependency becoming valid.

invalidate

public void invalidate(DependencyModel dep)

A service instance becomes invalid.

Specified by:

invalidate in interface DependencyStateListener

Parameters:

dep - : dependency becoming valid.

getDescription

public HandlerDescription getDescription()

Get the service instantiator handler description.

Overrides:

getDescription in class Handler

Returns:

the description

See Also:

CompositeHandler

getInstances

public List getInstances()

getRequirements

public List getRequirements()