org.picocontainer.defaults

Class InstanceComponentAdapter

java.lang.Object

org.picocontainer.defaults.MonitoringComponentAdapter

org.picocontainer.defaults.AbstractComponentAdapter

org.picocontainer.defaults.InstanceComponentAdapter

All Implemented Interfaces:

java.io.Serializable, ComponentAdapter, ComponentMonitorStrategy, LifecycleStrategy, LifecycleManager

public class InstanceComponentAdapter
extends AbstractComponentAdapter
implements LifecycleManager, LifecycleStrategy

Component adapter which wraps a component instance.

This component adapter supports both a LifecycleManager and a LifecycleStrategy to control the lifecycle of the component. The lifecycle manager methods simply delegate to the lifecycle strategy methods on the component instance.

Version:

$Revision: 2823 $

Author:

Aslak Hellesøy, Paul Hammant, Mauro Talevi

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.Object	componentInstance
private LifecycleStrategy	lifecycleStrategy

Constructor Summary

Constructors

Constructor and Description
InstanceComponentAdapter(java.lang.Object componentKey, java.lang.Object componentInstance)
InstanceComponentAdapter(java.lang.Object componentKey, java.lang.Object componentInstance, LifecycleStrategy lifecycleStrategy)

Method Summary

Methods

Modifier and Type	Method and Description
void	dispose(java.lang.Object component) Invoke the "dispose" method on the component instance if this is disposable.
void	dispose(PicoContainer container) Invoke the "dispose" method on the container's components.
java.lang.Object	getComponentInstance(PicoContainer container) Retrieve the component instance.
private static java.lang.Class	getInstanceClass(java.lang.Object componentInstance)
boolean	hasLifecycle() Test if a container's component has a lifecycle.
boolean	hasLifecycle(java.lang.Class type) Test if a component instance has a lifecycle.
void	start(java.lang.Object component) Invoke the "start" method on the component instance if this is startable.
void	start(PicoContainer container) Invoke the "start" method on the container's components.
void	stop(java.lang.Object component) Invoke the "stop" method on the component instance if this is stoppable.
void	stop(PicoContainer container) Invoke the "stop" method on the container's components.
void	verify(PicoContainer container) Verify that all dependencies for this adapter can be satisifed.

Methods inherited from class org.picocontainer.defaults.AbstractComponentAdapter

accept, checkTypeCompatibility, getComponentImplementation, getComponentKey, toString

Methods inherited from class org.picocontainer.defaults.MonitoringComponentAdapter

changeMonitor, currentMonitor

Methods inherited from class java.lang.Object

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

Field Detail

componentInstance

private java.lang.Object componentInstance

lifecycleStrategy

private LifecycleStrategy lifecycleStrategy

Constructor Detail

InstanceComponentAdapter

public InstanceComponentAdapter(java.lang.Object componentKey,
                        java.lang.Object componentInstance)
                         throws AssignabilityRegistrationException,
                                NotConcreteRegistrationException

Throws:

AssignabilityRegistrationException

NotConcreteRegistrationException

InstanceComponentAdapter

public InstanceComponentAdapter(java.lang.Object componentKey,
                        java.lang.Object componentInstance,
                        LifecycleStrategy lifecycleStrategy)
                         throws AssignabilityRegistrationException,
                                NotConcreteRegistrationException

Throws:

AssignabilityRegistrationException

NotConcreteRegistrationException

Method Detail

getInstanceClass

private static java.lang.Class getInstanceClass(java.lang.Object componentInstance)

getComponentInstance

public java.lang.Object getComponentInstance(PicoContainer container)

Description copied from interface: ComponentAdapter

Retrieve the component instance. This method will usually create a new instance each time it is called, but that is not required. For example, CachingComponentAdapter will always return the same instance.

Specified by:

getComponentInstance in interface ComponentAdapter

Parameters:

container - the PicoContainer, that is used to resolve any possible dependencies of the instance.

Returns:

the component instance.

verify

public void verify(PicoContainer container)

Description copied from interface: ComponentAdapter

Verify that all dependencies for this adapter can be satisifed. Normally, the adapter should verify this by checking that the associated PicoContainer contains all the needed dependnecies.

Specified by:

verify in interface ComponentAdapter

Parameters:

container - the PicoContainer, that is used to resolve any possible dependencies of the instance.

start

public void start(PicoContainer container)

Description copied from interface: LifecycleManager

Invoke the "start" method on the container's components.

Specified by:

start in interface LifecycleManager

Parameters:

container - the container to "start" its components' lifecycle

stop

public void stop(PicoContainer container)

Description copied from interface: LifecycleManager

Invoke the "stop" method on the container's components.

Specified by:

stop in interface LifecycleManager

Parameters:

container - the container to "stop" its components' lifecycle

dispose

public void dispose(PicoContainer container)

Description copied from interface: LifecycleManager

Invoke the "dispose" method on the container's components.

Specified by:

dispose in interface LifecycleManager

Parameters:

container - the container to "dispose" its components' lifecycle

hasLifecycle

public boolean hasLifecycle()

Description copied from interface: LifecycleManager

Test if a container's component has a lifecycle.

Specified by:

hasLifecycle in interface LifecycleManager

Returns:

true if the component has a lifecycle

start

public void start(java.lang.Object component)

Description copied from interface: LifecycleStrategy

Invoke the "start" method on the component instance if this is startable. It is up to the implementation of the strategy what "start" and "startable" means.

Specified by:

start in interface LifecycleStrategy

Parameters:

component - the instance of the component to start

stop

public void stop(java.lang.Object component)

Description copied from interface: LifecycleStrategy

Invoke the "stop" method on the component instance if this is stoppable. It is up to the implementation of the strategy what "stop" and "stoppable" means.

Specified by:

stop in interface LifecycleStrategy

Parameters:

component - the instance of the component to stop

dispose

public void dispose(java.lang.Object component)

Description copied from interface: LifecycleStrategy

Invoke the "dispose" method on the component instance if this is disposable. It is up to the implementation of the strategy what "dispose" and "disposable" means.

Specified by:

dispose in interface LifecycleStrategy

Parameters:

component - the instance of the component to dispose

hasLifecycle

public boolean hasLifecycle(java.lang.Class type)

Description copied from interface: LifecycleStrategy

Test if a component instance has a lifecycle.

Specified by:

hasLifecycle in interface LifecycleStrategy

Parameters:

type - the component's type

Returns:

true if the component has a lifecycle