net.dpml.runtime
Class ComponentStrategy

java.lang.Object
  net.dpml.lang.Strategy
      net.dpml.runtime.ComponentStrategy

All Implemented Interfaces:

Comparable<Strategy>, ServiceRegistry, Component

public class ComponentStrategy
extends Strategy
implements Component, ServiceRegistry

Component strategy.

Version:

2.0.2

Author:

Digital Product Management Laboratory

Method Summary

void	addComponentListener(ComponentListener listener) Add a listener to the component.
void	encode(Buffer buffer, String key) Encode the component model to the supplied buffer.
ActivationPolicy	getActivationPolicy() Return the assigned activation policy.
CollectionPolicy	getCollectionPolicy() Return the assigned collection policy.
<T> T	getContentForClass(Class<T> c) Return an instance of the requested class.
<T> T	getInstance(Class<T> clazz) Return an instance of the requested class.
LifestylePolicy	getLifestylePolicy() Return the assigned lifestyle policy.
String	getName() Get the component name.
int	getPriority() Get the component priority.
Provider	getProvider() Get a runtime provider for this component.
void	initialize(ServiceRegistry registry) Initialize the component with a supplied service registry.
boolean	isaCandidate(Class<?> type) Test if this component model can handle the supplied service type.
<T> T	lookup(Class<T> service) Get a service reference for the supplied type.
void	release(Provider provider) Release a provider back to the component.
void	removeComponentListener(ComponentListener listener) Remove a listener from the component.
void	terminate() Terminate the component model.
String	toString() Returns the string representing of the component.

Methods inherited from class net.dpml.lang.Strategy

compareTo, getClassLoader, load, load, load

Methods inherited from class java.lang.Object

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

Method Detail

getName

public String getName()

Get the component name.

Specified by:

getName in interface Component

Specified by:

getName in class Strategy

Returns:

the name

getPriority

public int getPriority()

Get the component priority.

Specified by:

getPriority in class Strategy

Returns:

the priority

addComponentListener

public void addComponentListener(ComponentListener listener)

Add a listener to the component.

Specified by:

addComponentListener in interface Component

Parameters:

listener - the component listener

removeComponentListener

public void removeComponentListener(ComponentListener listener)

Remove a listener from the component.

Specified by:

removeComponentListener in interface Component

Parameters:

listener - the component listener

getProvider

public Provider getProvider()

Get a runtime provider for this component.

Specified by:

getProvider in interface Component

Returns:

the provider

release

public void release(Provider provider)

Release a provider back to the component.

Specified by:

release in interface Component

Parameters:

provider - the provider to release

initialize

public void initialize(ServiceRegistry registry)

Initialize the component with a supplied service registry.

Specified by:

initialize in class Strategy

Parameters:

registry - the service registry

isaCandidate

public boolean isaCandidate(Class<?> type)

Test if this component model can handle the supplied service type.

Specified by:

isaCandidate in class Strategy

Parameters:

type - the service type

Returns:

true if the component is type compatible

lookup

public <T> T lookup(Class<T> service)

Get a service reference for the supplied type.

Specified by:

lookup in interface ServiceRegistry

Parameters:

service - the service type

Returns:

a service instance or null if unresolvable

terminate

public void terminate()

Terminate the component model.

Specified by:

terminate in interface Component

getCollectionPolicy

public CollectionPolicy getCollectionPolicy()

Return the assigned collection policy.

Returns:

the collection policy

getLifestylePolicy

public LifestylePolicy getLifestylePolicy()

Return the assigned lifestyle policy.

Returns:

the lifestyle policy

getActivationPolicy

public ActivationPolicy getActivationPolicy()

Return the assigned activation policy.

Returns:

the activation policy

getInstance

public <T> T getInstance(Class<T> clazz)

Return an instance of the requested class.

Specified by:

getInstance in class Strategy

Parameters:

clazz - the class

Returns:

the instance

getContentForClass

public <T> T getContentForClass(Class<T> c)
                     throws IOException

Return an instance of the requested class.

Specified by:

getContentForClass in class Strategy

Parameters:

c - the class

Returns:

the instance

Throws:

IOException - if an error occurs

encode

public void encode(Buffer buffer,
                   String key)
            throws IOException

Encode the component model to the supplied buffer.

Specified by:

encode in class Strategy

Parameters:

buffer - the endoding buffer

key - the component key

Throws:

IOException - if an error occurs

toString

public String toString()

Returns the string representing of the component.

Overrides:

toString in class Object

Returns:

the component as a string