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From "Irving, Dave" <dave.irv...@logicacmg.com>
Subject RE: [jira] Commented: (DIRMINA-120) Callbacks for IoFutures
Date Mon, 14 Nov 2005 08:54:15 GMT
Hi Trustin,

Yeah - that looks great. It keeps the flexibility, whilst removing the
extra complexity from the actual IoFuture implementations! Thanks!

Dave

-----Original Message-----
From: Trustin Lee (JIRA) [mailto:jira@apache.org] 
Sent: 13 November 2005 22:34
To: dev@directory.apache.org
Subject: [jira] Commented: (DIRMINA-120) Callbacks for IoFutures

    [
http://issues.apache.org/jira/browse/DIRMINA-120?page=comments#action_12
357550 ] 

Trustin Lee commented on DIRMINA-120:
-------------------------------------

I thought over your opinion and found the simpler way:

http://svn.apache.org/viewcvs/directory/network/trunk/src/java/org/apach
e/mina/common/IoFuture.java?rev=343990&r1=343989&r2=343990&view=diff

If we're going to downcast, why not downcasting IoFuture itself like
this?

ConnectFuture future = ...;

future.setCallback( new Iofuture.Callback() {
    public void operationComplete( IoFuture future ) {
        ConnectFuture cf = ( ConnectFuture ) future;
        try {
            IoSession session = cf.getSession();
        } ...
    }
});

> Callbacks for IoFutures
> -----------------------
>
>          Key: DIRMINA-120
>          URL: http://issues.apache.org/jira/browse/DIRMINA-120
>      Project: Directory MINA
>         Type: Improvement
>     Reporter: Trustin Lee
>     Assignee: Trustin Lee
>      Fix For: 0.9
>  Attachments: ConnectFuture.java, IoFuture.java
>
> IoFuture provides only blocking-way ('join' method) for user to find
out the result of an I/O request.  It would be great if users can
specify a callback:
> ConnectFuture future = connector.connect(...); future.setCallback( new

> ConnectFuture.Callback() {
>     public void connectionEstablished( IoSession session ) {
>     }
>     public void connectionFailed( Throwable cause ) {
>     }
> } );
> There can be a race condition if the connection process ends before a
user calls setCallback() method, but we can resolve this carefully so
users don't notice any issue.

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