Package de.quantummaid.eventmaid.channel.action

Class ReturnActionHandler<T>

java.lang.Object

de.quantummaid.eventmaid.channel.action.ReturnActionHandler<T>

Type Parameters:

T - the type of messages of the Channel

All Implemented Interfaces:

ActionHandler<Return<T>,T>

public final class ReturnActionHandler<T>
extends Object
implements ActionHandler<Return<T>,T>

The ActionHandler implementation for the Return Action. This handler will go back through the ChannelProcessingFrame history to obtain the last Call Action, that was not yet matched with an Return Action. If found, it will link those two and will return back to the point the Call was executed. If no not yet consumed Call was found, a ReturnWithoutCallException is thrown.

See Also:

EventMaid Documentation

Constructor Summary

Constructors

Constructor	Description
ReturnActionHandler()

Method Summary

Modifier and Type	Method	Description
void	handle(Return<T> returnAction, ProcessingContext<T> processingContext)	Will lookup the last Call Action and return from it.
static <T> ReturnActionHandler<T>	returnActionHandler()	Factory method for a new ReturnActionHandler.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReturnActionHandler

public ReturnActionHandler()

Method Detail

returnActionHandler

public static <T> ReturnActionHandler<T> returnActionHandler()

Factory method for a new ReturnActionHandler.

Type Parameters:

T - the type of messages of the Channel

Returns:

a new ReturnActionHandler

handle

public void handle(Return<T> returnAction,
                   ProcessingContext<T> processingContext)

Will lookup the last Call Action and return from it.

Specified by:

handle in interface ActionHandler<Return<T>,T>

Parameters:

returnAction - the Return Action to be handled

processingContext - the message

Throws:

ReturnWithoutCallException - if not not yet handled Call could be found