org.apache.flink.streaming.api.operators

接口 OneInputStreamOperator<IN,OUT>

类型参数:

IN - The input type of the operator

OUT - The output type of the operator

所有超级接口:

org.apache.flink.api.common.state.CheckpointListener, Input<IN>, KeyContext, Serializable, StreamOperator<OUT>

所有已知实现类:

AsyncWaitOperator, BatchGroupedReduceOperator, CacheTransformationTranslator.IdentityStreamOperator, CacheTransformationTranslator.NoOpStreamOperator, CollectSinkOperator, ContinuousFileReaderOperator, EvictingWindowOperator, GenericWriteAheadSink, KeyedProcessOperator, LegacyKeyedProcessOperator, ProcessOperator, QueryableAppendingStateOperator, QueryableValueStateOperator, StreamFilter, StreamFlatMap, StreamGroupedReduceOperator, StreamMap, StreamProject, StreamSink, TimestampsAndWatermarksOperator, WindowOperator

@PublicEvolving
public interface OneInputStreamOperator<IN,OUT>
extends StreamOperator<OUT>, Input<IN>

Interface for stream operators with one input. Use AbstractStreamOperator as a base class if you want to implement a custom operator.

方法概要

限定符和类型	方法和说明
default void	setKeyContextElement(StreamRecord<IN> record) Set the correct key context before processing the record.

从接口继承的方法 org.apache.flink.streaming.api.operators.StreamOperator

close, finish, getMetricGroup, getOperatorID, initializeState, open, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState

从接口继承的方法 org.apache.flink.api.common.state.CheckpointListener

notifyCheckpointAborted, notifyCheckpointComplete

从接口继承的方法 org.apache.flink.streaming.api.operators.KeyContext

getCurrentKey, setCurrentKey

从接口继承的方法 org.apache.flink.streaming.api.operators.Input

processElement, processLatencyMarker, processWatermark, processWatermarkStatus

方法详细资料

setKeyContextElement

default void setKeyContextElement(StreamRecord<IN> record)
                           throws Exception

从接口复制的说明: Input

Set the correct key context before processing the record. Used for example to extract key from the record and pass that key to the state backends. This method is guaranteed to not be called concurrently with other methods of the operator.

指定者:

setKeyContextElement 在接口中 Input<IN>

抛出:

Exception