org.apache.flink.streaming.api.operators

接口 OutputTypeConfigurable<OUT>

所有已知实现类:

AbstractUdfStreamOperator, AsyncWaitOperator, CoBroadcastWithKeyedOperator, CoBroadcastWithNonKeyedOperator, CollectSinkOperator, ContinuousFileReaderOperator, CoProcessOperator, CoStreamFlatMap, CoStreamMap, EvictingWindowOperator, FoldApplyAllWindowFunction, FoldApplyProcessAllWindowFunction, FoldApplyProcessWindowFunction, FoldApplyWindowFunction, IntervalJoinOperator, KeyedCoProcessOperator, KeyedProcessOperator, LegacyKeyedCoProcessOperator, LegacyKeyedProcessOperator, ProcessOperator, StreamFilter, StreamFlatMap, StreamGroupedFold, StreamGroupedReduce, StreamMap, StreamSink, StreamSource, WindowOperator

@PublicEvolving
public interface OutputTypeConfigurable<OUT>

Stream operators can implement this interface if they need access to the output type information at StreamGraph generation. This can be useful for cases where the output type is specified by the returns method and, thus, after the stream operator has been created.

方法概要

限定符和类型	方法和说明
void	setOutputType(org.apache.flink.api.common.typeinfo.TypeInformation<OUT> outTypeInfo, org.apache.flink.api.common.ExecutionConfig executionConfig) Is called by the org.apache.flink.streaming.api.graph.StreamGraph#addOperator(Integer, String, StreamOperator, TypeInformation, TypeInformation, String) method when the StreamGraph is generated.

方法详细资料

setOutputType

void setOutputType(org.apache.flink.api.common.typeinfo.TypeInformation<OUT> outTypeInfo,
                   org.apache.flink.api.common.ExecutionConfig executionConfig)

Is called by the org.apache.flink.streaming.api.graph.StreamGraph#addOperator(Integer, String, StreamOperator, TypeInformation, TypeInformation, String) method when the StreamGraph is generated. The method is called with the output TypeInformation which is also used for the StreamTask output serializer.

参数:

outTypeInfo - Output type information of the StreamTask

executionConfig - Execution configuration