com.github.iamiddy.syncrest.asynchprocessor

Class ResponseObservable

java.lang.Object

com.github.iamiddy.syncrest.asynchprocessor.ResponseObservable

Direct Known Subclasses:

MessageConsumer

public class ResponseObservable
extends Object

Created by iddymagohe on 1/9/16.

Constructor Summary

Constructors

Constructor and Description
ResponseObservable()

Method Summary

Modifier and Type	Method and Description
void	addObservers(ResponseObserver ro) Adds an observer to the Map of responseObservers for this response, provided that it is not the same as some observer already in the set.
protected void	clearChanged() Indicates that this object has no longer changed, or that it has already notified all of its observers of its most recent change, so that the hasChanged method will now return false.
int	countObservers() Returns the number of observers of this Observable object.
void	deleteObserver(ResponseObserver ro) Deletes an observer from a map of observers of this object.
boolean	hasChanged() Tests if this object has changed.
<T extends AbstractResponse> void	notifyObservers(T r) If this object has changed, as indicated by the hasChanged method, then find and notify only one Observer and then call the clearChanged method to indicate that this object has no longer changed.
protected void	setChanged() Marks this Observable object as having been changed; the hasChanged method will now return true.

Methods inherited from class java.lang.Object

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

Constructor Detail

ResponseObservable

public ResponseObservable()

Method Detail

addObservers

public void addObservers(ResponseObserver ro)

Adds an observer to the Map of responseObservers for this response, provided that it is not the same as some observer already in the set.

Parameters:

ro - responseObserver to be added

Throws:

NullPointerException - non-null observers

IllegalStateException - unique requests

deleteObserver

public void deleteObserver(ResponseObserver ro)

Deletes an observer from a map of observers of this object. Passing null to this method will have no effect.

Parameters:

ro - the observer to be deleted.

notifyObservers

public <T extends AbstractResponse> void notifyObservers(T r)

If this object has changed, as indicated by the hasChanged method, then find and notify only one Observer and then call the clearChanged method to indicate that this object has no longer changed.

Each observer has its update method called with two arguments: this observable object and the r argument.

Type Parameters:

T - type

Parameters:

r - any child object of AbstractResponse.

See Also:

clearChanged(), hasChanged(), ResponseObserver.applyResponse(ResponseObservable, AbstractResponse)

setChanged

protected void setChanged()

Marks this Observable object as having been changed; the hasChanged method will now return true.

clearChanged

protected void clearChanged()

Indicates that this object has no longer changed, or that it has already notified all of its observers of its most recent change, so that the hasChanged method will now return false. This method is called automatically by the notifyObservers methods.

See Also:

Observable.notifyObservers(), Observable.notifyObservers(java.lang.Object)

hasChanged

public boolean hasChanged()

Tests if this object has changed.

Returns:

true if and only if the setChanged method has been called more recently than the clearChanged method on this object; false otherwise.

See Also:

clearChanged(), setChanged()

countObservers

public int countObservers()

Returns the number of observers of this Observable object.

Returns:

the number of observers of this object.