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Date: Mon, 7 Nov 2016 15:18:59 +0000 (UTC)
From: "Stephan Ewen (JIRA)" <jira@apache.org>
To: issues@flink.apache.org
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Subject: [jira] [Commented] (FLINK-5023) Add get() method in State interface
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archived-at: Mon, 07 Nov 2016 15:19:01 -0000


    [ https://issues.apache.org/jira/browse/FLINK-5023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15644451#comment-15644451 ] 

Stephan Ewen commented on FLINK-5023:
-------------------------------------

I agree with [~xiaogang.shi] - do we really need another interface? Can we not just augment the {{State}} interface?

This would only be API breaking if we expect users to implement state interfaces themselves, which we do not, I think.

> Add get() method in State interface
> -----------------------------------
>
>                 Key: FLINK-5023
>                 URL: https://issues.apache.org/jira/browse/FLINK-5023
>             Project: Flink
>          Issue Type: Improvement
>          Components: State Backends, Checkpointing
>            Reporter: Xiaogang Shi
>
> Currently, the only method provided by the State interface is `clear()`. I think we should provide another method called `get()` to return the structured value (e.g., value, list, or map) under the current key. 
> In fact, the functionality of `get()` has already been implemented in all types of states: e.g., `value()` in ValueState and `get()` in ListState. The modification to the interface can better abstract these states.


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