org.picocontainer
Interface ComponentMonitor

All Known Implementing Classes:

AbstractComponentMonitor, ComposingMonitor, ConsoleComponentMonitor, LifecycleComponentMonitor, NullComponentMonitor, WriterComponentMonitor

public interface ComponentMonitor

A component monitor is responsible for monitoring the component instantiation and method invocation.

Author:

Paul Hammant, Obie Fernandez, Aslak Hellesøy, Mauro Talevi

Field Summary

static Object

KEEP

Method Summary

<T> void	instantiated(PicoContainer container, ComponentAdapter<T> componentAdapter, Constructor<T> constructor, Object instantiated, Object[] injected, long duration) Event thrown after the component has been instantiated using the given constructor.
<T> Constructor<T>	instantiating(PicoContainer container, ComponentAdapter<T> componentAdapter, Constructor<T> constructor) Event thrown as the component is being instantiated using the given constructor
<T> void	instantiationFailed(PicoContainer container, ComponentAdapter<T> componentAdapter, Constructor<T> constructor, Exception cause) Event thrown if the component instantiation failed using the given constructor
void	invocationFailed(Member member, Object instance, Exception cause) Event thrown if the component method invocation failed on the given instance
void	invoked(PicoContainer container, ComponentAdapter<?> componentAdapter, Member member, Object instance, long duration, Object[] args, Object retVal) Event thrown after the component method has been invoked on the given instance
Object	invoking(PicoContainer container, ComponentAdapter<?> componentAdapter, Member member, Object instance, Object[] args) Event thrown as the component method is being invoked on the given instance
void	lifecycleInvocationFailed(MutablePicoContainer container, ComponentAdapter<?> componentAdapter, Method method, Object instance, RuntimeException cause) Event thrown if a lifecycle method invocation - start, stop or dispose - failed on the given instance
Behavior	newBehavior(Behavior behavior) A mechanism to monitor or override the Behaviors being made for components.
Injector	newInjector(Injector injector) A mechanism to monitor or override the Injectors being made for components.
Object	noComponentFound(MutablePicoContainer container, Object componentKey) No Component has been found for the key in question.

Field Detail

KEEP

static final Object KEEP

Method Detail

instantiating

<T> Constructor<T> instantiating(PicoContainer container,
                                 ComponentAdapter<T> componentAdapter,
                                 Constructor<T> constructor)

Event thrown as the component is being instantiated using the given constructor

Parameters:

container -

componentAdapter -

constructor - the Constructor used to instantiate the addComponent @return the constructor to use in instantiation (nearly always the same one as passed in)

instantiated

<T> void instantiated(PicoContainer container,
                      ComponentAdapter<T> componentAdapter,
                      Constructor<T> constructor,
                      Object instantiated,
                      Object[] injected,
                      long duration)

Event thrown after the component has been instantiated using the given constructor. This should be called for both Constructor and Setter DI.

Parameters:

container -

componentAdapter -

constructor - the Constructor used to instantiate the addComponent

instantiated - the component that was instantiated by PicoContainer

injected - the components during instantiation.

duration - the duration in milliseconds of the instantiation

instantiationFailed

<T> void instantiationFailed(PicoContainer container,
                             ComponentAdapter<T> componentAdapter,
                             Constructor<T> constructor,
                             Exception cause)

Event thrown if the component instantiation failed using the given constructor

Parameters:

container -

componentAdapter -

constructor - the Constructor used to instantiate the addComponent

cause - the Exception detailing the cause of the failure

invoking

Object invoking(PicoContainer container,
                ComponentAdapter<?> componentAdapter,
                Member member,
                Object instance,
                Object[] args)

Event thrown as the component method is being invoked on the given instance

Parameters:

container -

componentAdapter -

member -

instance - the component instance

args -

invoked

void invoked(PicoContainer container,
             ComponentAdapter<?> componentAdapter,
             Member member,
             Object instance,
             long duration,
             Object[] args,
             Object retVal)

Event thrown after the component method has been invoked on the given instance

Parameters:

container -

componentAdapter -

member -

instance - the component instance

duration -

args -

retVal -

invocationFailed

void invocationFailed(Member member,
                      Object instance,
                      Exception cause)

Event thrown if the component method invocation failed on the given instance

Parameters:

member -

instance - the component instance

cause - the Exception detailing the cause of the failure

lifecycleInvocationFailed

void lifecycleInvocationFailed(MutablePicoContainer container,
                               ComponentAdapter<?> componentAdapter,
                               Method method,
                               Object instance,
                               RuntimeException cause)

Event thrown if a lifecycle method invocation - start, stop or dispose - failed on the given instance

Parameters:

container -

componentAdapter -

method - the lifecycle Method invoked on the component instance

instance - the component instance

cause - the RuntimeException detailing the cause of the failure

noComponentFound

Object noComponentFound(MutablePicoContainer container,
                        Object componentKey)

No Component has been found for the key in question. Implementers of this have a last chance opportunity to specify something for the need. This is only relevant to component dependencies, and not to container.getComponent() in your user code.

Parameters:

container -

componentKey -

newInjector

Injector newInjector(Injector injector)

A mechanism to monitor or override the Injectors being made for components.

Parameters:

injector -

Returns:

an Injector. For most implementations, the same one as was passed in.

newBehavior

Behavior newBehavior(Behavior behavior)

A mechanism to monitor or override the Behaviors being made for components.

Parameters:

behavior -

Returns:

an Behavior. For most implementations, the same one as was passed in.