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https://issues.apache.org/jira/browse/FLINK-5023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15852832#comment-15852832
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ASF GitHub Bot commented on FLINK-5023:
---------------------------------------
Github user aljoscha commented on the issue:
https://github.com/apache/flink/pull/2768
In fact, my original suggestion was to add a new interface `ReadableState`:
```
interface ReadableState<T> {
T get();
}
```
and leave all the existing interfaces as they are. That way we would have
the least amount of changes in existing code and still have a common interface
for state that can be read. (Note that `ReadableState` does not extends `State`
on purpose, because of `State.clear()`.)
> 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
> Assignee: 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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