org.jboss.weld.event

Class ObserverMethodImpl<T,X>

java.lang.Object

org.jboss.weld.event.ObserverMethodImpl<T,X>

All Implemented Interfaces:

ObserverMethod<T>

Direct Known Subclasses:

ExtensionObserverMethodImpl

public class ObserverMethodImpl<T,X>
extends Object
implements ObserverMethod<T>

Reference implementation for the ObserverMethod 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, Jozef Hartinger, Marko Luksa

Field Summary

Fields

Modifier and Type	Field and Description
protected BeanManagerImpl	beanManager
protected RIBean<X>	declaringBean
static String	ID_PREFIX
static String	ID_SEPARATOR
protected MethodInjectionPoint<T,? super X>	observerMethod
protected TransactionPhase	transactionPhase

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ObserverMethodImpl(EnhancedAnnotatedMethod<T,? super X> observer, RIBean<X> declaringBean, BeanManagerImpl manager) Creates an Observer which describes and encapsulates an observer method (8.5).

Method Summary

Methods

Modifier and Type	Method and Description
protected void	checkRequiredTypeAnnotations(EnhancedAnnotatedParameter<?,?> eventParameter)
protected static String	createId(EnhancedAnnotatedMethod<?,?> observer, RIBean<?> declaringBean)
boolean	equals(Object obj)
Class<X>	getBeanClass() Obtains the class of the type that declares the observer method.
RIBean<X>	getDeclaringBean()
String	getId()
Set<WeldInjectionPointAttributes<?,?>>	getInjectionPoints()
MethodInjectionPoint<T,? super X>	getMethod()
Set<WeldInjectionPointAttributes<?,?>>	getNewInjectionPoints()
Set<Annotation>	getObservedQualifiers() Obtains the set of observed event qualifiers.
Type	getObservedType() Obtains the observed event type.
protected Object	getReceiver(CreationalContext<X> creationalContext)
Reception	getReception() Obtains the specified Reception for the observer method.
TransactionPhase	getTransactionPhase() Obtains the specified TransactionPhase for the observer method.
int	hashCode()
void	initialize(EnhancedAnnotatedMethod<T,? super X> annotated) Completes initialization of the observer and allows derived types to override behavior.
protected MethodInjectionPoint<T,? super X>	initMethodInjectionPoint(EnhancedAnnotatedMethod<T,? super X> observer, RIBean<X> declaringBean, BeanManagerImpl manager)
void	notify(T event) Calls the observer method, passing the given event object.
protected void	postNotify(T event, Object receiver)
protected void	preNotify(T event, Object receiver) Hooks allowing subclasses to perform additional logic just before and just after an event is delivered to an observer method.
protected void	sendEvent(T event) Invokes the observer method immediately passing the event.
protected void	sendEvent(T event, Object receiver, CreationalContext<?> creationalContext)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

ID_PREFIX

public static final String ID_PREFIX

ID_SEPARATOR

public static final String ID_SEPARATOR

See Also:

Constant Field Values

beanManager

protected final BeanManagerImpl beanManager

declaringBean

protected final RIBean<X> declaringBean

observerMethod

protected final MethodInjectionPoint<T,? super X> observerMethod

transactionPhase

protected TransactionPhase transactionPhase

Constructor Detail

ObserverMethodImpl

protected ObserverMethodImpl(EnhancedAnnotatedMethod<T,? super X> observer,
                  RIBean<X> declaringBean,
                  BeanManagerImpl manager)

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

Parameters:

observer - The observer

declaringBean - The observer bean

manager - The Bean manager

Method Detail

createId

protected static String createId(EnhancedAnnotatedMethod<?,?> observer,
              RIBean<?> declaringBean)

initMethodInjectionPoint

protected MethodInjectionPoint<T,? super X> initMethodInjectionPoint(EnhancedAnnotatedMethod<T,? super X> observer,
                                                         RIBean<X> declaringBean,
                                                         BeanManagerImpl manager)

getInjectionPoints

public Set<WeldInjectionPointAttributes<?,?>> getInjectionPoints()

getNewInjectionPoints

public Set<WeldInjectionPointAttributes<?,?>> getNewInjectionPoints()

checkRequiredTypeAnnotations

protected void checkRequiredTypeAnnotations(EnhancedAnnotatedParameter<?,?> eventParameter)

getBeanClass

public Class<X> getBeanClass()

Description copied from interface: ObserverMethod

Obtains the class of the type that declares the observer method.

Specified by:

getBeanClass in interface ObserverMethod<T>

Returns:

the defining class

getDeclaringBean

public RIBean<X> getDeclaringBean()

getReception

public Reception getReception()

Description copied from interface: ObserverMethod

Obtains the specified Reception for the observer method. This indicates if the observer is conditional or not.

Specified by:

getReception in interface ObserverMethod<T>

Returns:

the Reception

getObservedQualifiers

public Set<Annotation> getObservedQualifiers()

Description copied from interface: ObserverMethod

Obtains the set of observed event qualifiers.

Specified by:

getObservedQualifiers in interface ObserverMethod<T>

Returns:

the observed event qualifiers

getObservedType

public Type getObservedType()

Description copied from interface: ObserverMethod

Obtains the observed event type.

Specified by:

getObservedType in interface ObserverMethod<T>

Returns:

the observed event type

getTransactionPhase

public TransactionPhase getTransactionPhase()

Description copied from interface: ObserverMethod

Obtains the specified TransactionPhase for the observer method.

Specified by:

getTransactionPhase in interface ObserverMethod<T>

Returns:

the TransactionPhase

getMethod

public MethodInjectionPoint<T,? super X> getMethod()

Returns:

the observerMethod

initialize

public void initialize(EnhancedAnnotatedMethod<T,? super X> annotated)

Completes initialization of the observer and allows derived types to override behavior.

notify

public void notify(T event)

Description copied from interface: ObserverMethod

Calls the observer method, passing the given event object.

The implementation of this method for a custom observer method is responsible for deciding whether to call the method if the ObserverMethod.getReception() returns Reception.IF_EXISTS.

Specified by:

notify in interface ObserverMethod<T>

Parameters:

event - the event object

sendEvent

protected void sendEvent(T event)

Invokes the observer method immediately passing the event.

Parameters:

event - The event to notify observer with

sendEvent

protected void sendEvent(T event,
             Object receiver,
             CreationalContext<?> creationalContext)

preNotify

protected void preNotify(T event,
             Object receiver)

Hooks allowing subclasses to perform additional logic just before and just after an event is delivered to an observer method.

postNotify

protected void postNotify(T event,
              Object receiver)

getReceiver

protected Object getReceiver(CreationalContext<X> creationalContext)

toString

public String toString()

Overrides:

toString in class Object

getId

public String getId()

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object