org.apache.flink.table.runtime.operators.join.stream.state

Interface JoinRecordStateView

All Known Subinterfaces:

OuterJoinRecordStateView

public interface JoinRecordStateView

A JoinRecordStateView 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.

Method Summary

Modifier and Type	Method and Description
void	addRecord(RowData record) Add a new record to the state view.
Iterable<RowData>	getRecords() Gets all the records under the current context (i.e. join key).
void	retractRecord(RowData record) Retract the record from the state view.

Method Detail

addRecord

void addRecord(RowData record)
        throws Exception

Add a new record to the state view.

Throws:

Exception

retractRecord

void retractRecord(RowData record)
            throws Exception

Retract the record from the state view.

Throws:

Exception

getRecords

Iterable<RowData> getRecords()
                      throws Exception

Gets all the records under the current context (i.e. join key).

Throws:

Exception