JoinRecordAsyncStateView (Flink : 2.0-SNAPSHOT API)

All Known Subinterfaces:

OuterJoinRecordAsyncStateView
```
public interface JoinRecordAsyncStateView
```
A JoinRecordAsyncStateView is a view to the join state. It encapsulates the join state and provides some APIs facing the input records. The join state is used to store input records. The structure of the join state is vary depending on the JoinInputSideSpec.
For example: when the JoinInputSideSpec is JoinKeyContainsUniqueKey, we will use ValueState to store records which has better performance.
Different with JoinRecordStateView, this interface is based on async state api.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`StateFuture<Void>`	`addRecord(RowData record)`	Add a new record to the state view.
`StateFuture<List<OuterRecord>>`	`findMatchedRecords(Function<RowData,Boolean> condition)`	Find all the records matched the condition under the current context (i.e. join key).
`StateFuture<Void>`	`retractRecord(RowData record)`	Retract the record from the state view.

- Method Detail
  - addRecord
```
StateFuture<Void> addRecord(RowData record)
```
    Add a new record to the state view.
  - retractRecord
```
StateFuture<Void> retractRecord(RowData record)
```
    Retract the record from the state view.
  - findMatchedRecords
```
StateFuture<List<OuterRecord>> findMatchedRecords(Function<RowData,Boolean> condition)
```
    Find all the records matched the condition under the current context (i.e. join key).