org.jboss.webbeans.event
Class ObserverImpl<T>

java.lang.Object
  org.jboss.webbeans.event.ObserverImpl<T>

All Implemented Interfaces:

Observer<T>

public class ObserverImpl<T>
extends java.lang.Object
implements Observer<T>

Reference implementation for the Observer interface, which represents an observer method. Each observer method has an event type which is the class of the event object being observed, and event binding types that are annotations applied to the event parameter to narrow the event notifications delivered.

Author:

David Allen

Nested Class Summary

protected static class

ObserverImpl.TransactionObservationPhase The known transactional phases a transactional event observer can be interested in

Constructor Summary

ObserverImpl(AnnotatedMethod<java.lang.Object> observer, Bean<?> observerBean, ManagerImpl manager)
Creates an Observer which describes and encapsulates an observer method (8.5).

Method Summary

protected java.lang.Object	getInstance(boolean create) Uses the container to retrieve the most specialized instance of this observer.
boolean	isConditional() Indicates if the observer is conditional
boolean	isInterestedInTransactionPhase(ObserverImpl.TransactionObservationPhase currentPhase) Checks if the observer is interested in a particular transactional phase
boolean	isTransactional() Indicates if the observer is transactional
void	notify(T event)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ObserverImpl

public ObserverImpl(AnnotatedMethod<java.lang.Object> observer,
                    Bean<?> observerBean,
                    ManagerImpl manager)

Creates an Observer which describes and encapsulates an observer method (8.5).

Parameters:

observer - The observer

observerBean - The observer bean

manager - The Web Beans manager

Method Detail

notify

public void notify(T event)

Specified by:

notify in interface Observer<T>

getInstance

protected java.lang.Object getInstance(boolean create)

Uses the container to retrieve the most specialized instance of this observer.

Parameters:

create - True if the instance should be created if not already done

Returns:

the most specialized instance

isTransactional

public boolean isTransactional()

Indicates if the observer is transactional

Returns:

True if transactional, false otherwise

isConditional

public boolean isConditional()

Indicates if the observer is conditional

Returns:

True if conditional, false otherwise

isInterestedInTransactionPhase

public boolean isInterestedInTransactionPhase(ObserverImpl.TransactionObservationPhase currentPhase)

Checks if the observer is interested in a particular transactional phase

Parameters:

currentPhase - The phase to check

Returns:

True if interested, false otherwise

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object