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https://issues.apache.org/jira/browse/FLINK-5023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15687292#comment-15687292
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ASF GitHub Bot commented on FLINK-5023:
---------------------------------------
Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/2768#discussion_r89161552
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/functions/query/AbstractQueryableStateOperator.java
---
@@ -28,16 +28,17 @@
/**
* Internal operator handling queryable state instances (setup and update).
*
+ * @param <V> Value type
* @param <S> State type
* @param <IN> Input type
*/
@Internal
-abstract class AbstractQueryableStateOperator<S extends State, IN>
+abstract class AbstractQueryableStateOperator<V, S extends State<V>, IN>
--- End diff --
I think here the same thing I mentioned earlier holds, we don't really need
the additional `V` parameter.
> 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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