org.apache.flink.streaming.api.datastream

类 DataStreamSource<T>

java.lang.Object

org.apache.flink.streaming.api.datastream.DataStream<T>

org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator<T>

org.apache.flink.streaming.api.datastream.DataStreamSource<T>

类型参数:

T - Type of the elements in the DataStream created from the this source.

@Public
public class DataStreamSource<T>
extends SingleOutputStreamOperator<T>

The DataStreamSource represents the starting point of a DataStream.

字段概要

从类继承的字段 org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator

nonParallel

从类继承的字段 org.apache.flink.streaming.api.datastream.DataStream

environment, transformation

构造器概要

构造器

构造器和说明
DataStreamSource(SingleOutputStreamOperator<T> operator) Constructor for "deep" sources that manually set up (one or more) custom configured complex operators.
DataStreamSource(StreamExecutionEnvironment environment, org.apache.flink.api.connector.source.Source<T,?,?> source, org.apache.flink.api.common.eventtime.WatermarkStrategy<T> watermarkStrategy, org.apache.flink.api.common.typeinfo.TypeInformation<T> outTypeInfo, String sourceName) Constructor for new Sources (FLIP-27).
DataStreamSource(StreamExecutionEnvironment environment, org.apache.flink.api.common.typeinfo.TypeInformation<T> outTypeInfo, StreamSource<T,?> operator, boolean isParallel, String sourceName)
DataStreamSource(StreamExecutionEnvironment environment, org.apache.flink.api.common.typeinfo.TypeInformation<T> outTypeInfo, StreamSource<T,?> operator, boolean isParallel, String sourceName, org.apache.flink.api.connector.source.Boundedness boundedness) The constructor used to create legacy sources.

方法概要

限定符和类型	方法和说明
DataStreamSource<T>	setParallelism(int parallelism) Sets the parallelism for this operator.

从类继承的方法 org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator

disableChaining, forceNonParallel, getName, getSideOutput, name, returns, returns, returns, setBufferTimeout, setMaxParallelism, setUidHash, slotSharingGroup, startNewChain, uid

从类继承的方法 org.apache.flink.streaming.api.datastream.DataStream

addSink, assignTimestampsAndWatermarks, assignTimestampsAndWatermarks, assignTimestampsAndWatermarks, broadcast, broadcast, clean, coGroup, connect, connect, countWindowAll, countWindowAll, doTransform, executeAndCollect, executeAndCollect, executeAndCollect, executeAndCollect, filter, flatMap, flatMap, forward, getExecutionConfig, getExecutionEnvironment, getId, getMinResources, getParallelism, getPreferredResources, getTransformation, getType, global, iterate, iterate, join, keyBy, keyBy, keyBy, keyBy, map, map, partitionCustom, partitionCustom, partitionCustom, print, print, printToErr, printToErr, process, process, project, rebalance, rescale, setConnectionType, shuffle, sinkTo, timeWindowAll, timeWindowAll, transform, transform, union, windowAll, writeAsCsv, writeAsCsv, writeAsCsv, writeAsText, writeAsText, writeToSocket, writeUsingOutputFormat

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

DataStreamSource

public DataStreamSource(StreamExecutionEnvironment environment,
                        org.apache.flink.api.common.typeinfo.TypeInformation<T> outTypeInfo,
                        StreamSource<T,?> operator,
                        boolean isParallel,
                        String sourceName)

DataStreamSource

public DataStreamSource(StreamExecutionEnvironment environment,
                        org.apache.flink.api.common.typeinfo.TypeInformation<T> outTypeInfo,
                        StreamSource<T,?> operator,
                        boolean isParallel,
                        String sourceName,
                        org.apache.flink.api.connector.source.Boundedness boundedness)

The constructor used to create legacy sources.

DataStreamSource

public DataStreamSource(SingleOutputStreamOperator<T> operator)

Constructor for "deep" sources that manually set up (one or more) custom configured complex operators.

DataStreamSource

public DataStreamSource(StreamExecutionEnvironment environment,
                        org.apache.flink.api.connector.source.Source<T,?,?> source,
                        org.apache.flink.api.common.eventtime.WatermarkStrategy<T> watermarkStrategy,
                        org.apache.flink.api.common.typeinfo.TypeInformation<T> outTypeInfo,
                        String sourceName)

Constructor for new Sources (FLIP-27).

方法详细资料

setParallelism

public DataStreamSource<T> setParallelism(int parallelism)

从类复制的说明: SingleOutputStreamOperator

Sets the parallelism for this operator.

覆盖:

setParallelism 在类中 SingleOutputStreamOperator<T>

参数:

parallelism - The parallelism for this operator.

返回:

The operator with set parallelism.