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https://issues.apache.org/jira/browse/FLINK-5023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15687289#comment-15687289
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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_r89161821
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/AbstractStreamOperator.java
---
@@ -487,7 +487,7 @@ protected ProcessingTimeService
getProcessingTimeService() {
* @throws IllegalStateException Thrown, if the key/value state was
already initialized.
* @throws Exception Thrown, if the state backend cannot create the
key/value state.
*/
- protected <S extends State> S getPartitionedState(StateDescriptor<S, ?>
stateDescriptor) throws Exception {
+ protected <V, S extends State<V>> S
getPartitionedState(StateDescriptor<S> stateDescriptor) throws Exception {
--- End diff --
Here, the same thing I mentioned on `KeyedStateBackend` holds, we don't
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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