Programmer Reference : Asynchronous Programming : EsFutureListener
EsFutureListener
Description
The listener is registered on a future and handles value/error completions
Instance State
• nextListener: <EsFutureListener> Listeners on the same future are linked through this link.
• result: <EsFutureImpl> The future to complete when this listener is activated.
• state: <Integer>Which fields means what.
• handler: <Block> Used for then/whenDone callback and error test
• errorHandler <Block> Used for error callbacks.
Class Methods
catchError:onError:test: 
  Answer a new listener that handles errors emitted by a future

     Arguments:
        aResult - <EsFutureImpl>
        onError - <Block>
        onErrorTest - <Block>
     Answers:
        <EsFutureListener>
then:onValue:onError: 
  Answer a new listener that handles a future's completion value

     Arguments:
        aResult - <EsFutureImpl>
        onValue - <Block>
        onError - <Block>
     Answers:
        <EsFutureListener>
whenComplete:handler: 
  Answer a new listener whose handler is called when a future completes

     Arguments:
        aResult - <EsFutureImpl>
        aHandler - <Block>
     Answers:
        <EsFutureListener>
Instance Methods
handleError: 
No comment
handlesComplete 
No comment
handlesError 
No comment
handlesValue 
No comment
handleValue: 
No comment
handleWhenComplete 
No comment
hasErrorHandler 
  Whether this listener has an error handler.

     This method must only be called if the listener #handlesError

     Answers:
        <Boolean>
hasErrorTest 
No comment
matchesErrorTest: 
No comment
result 
  Answer the future to complete when this listener is activated

     Answers:
        <EsFutureImpl>
Last modified date: 04/21/2022