[jira] Commented: (ZOOKEEPER-66) Add NullWatcher, a watcher that does nothing

["Flavio Paiva Junqueira (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-66?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12610748#action_12610748 ] 

Flavio Paiva Junqueira commented on ZOOKEEPER-66:
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I'm not entirely convinced that this is a good idea. The watcher is important for the communication between ZooKeeper and the client, and I can understand if you want to use a null watcher in the case you're implementing a quick program for debugging or perhaps test purposes, but in such cases implementing the Watcher interface and declaring a process method that does nothing doesn't seem like a huge burden to me. 

I'm affraid that by adding a null watcher, we'll give the impression to users that implementing a Watcher is not that important. 

> Add NullWatcher, a watcher that does nothing
> --------------------------------------------
>
>                 Key: ZOOKEEPER-66
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-66
>             Project: Zookeeper
>          Issue Type: New Feature
>          Components: java client
>            Reporter: Anthony Urso
>            Priority: Minor
>         Attachments: nullwatcher.diff
>
>
> I found that I was repeating this code all over the place. Here is a NullWatcher class, a Watcher that does nothing at all.

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