org.apache.flink.api.java.operators

Class SingleInputOperator<IN,OUT,O extends SingleInputOperator<IN,OUT,O>>

java.lang.Object

org.apache.flink.api.java.DataSet<OUT>

org.apache.flink.api.java.operators.Operator<OUT,O>

org.apache.flink.api.java.operators.SingleInputOperator<IN,OUT,O>

Type Parameters:

IN - The data type of the input data set.

OUT - The data type of the returned data set.

Direct Known Subclasses:

AggregateOperator, DistinctOperator, IterativeDataSet, ProjectOperator, SingleInputUdfOperator

public abstract class SingleInputOperator<IN,OUT,O extends SingleInputOperator<IN,OUT,O>>
extends Operator<OUT,O>

Base class for operations that operates on a single input data set.

Field Summary

Fields inherited from class org.apache.flink.api.java.operators.Operator

dop, name

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SingleInputOperator(DataSet<IN> input, TypeInformation<OUT> resultType)

Method Summary

Methods

Modifier and Type	Method and Description
DataSet<IN>	getInput() Gets the data set that this operation uses as its input.
TypeInformation<IN>	getInputType() Gets the type information of the data type of the input data set.
protected abstract SingleInputOperator<?,OUT,?>	translateToDataFlow(Operator<IN> input) Translates this operation to a data flow operator of the common data flow API.

Methods inherited from class org.apache.flink.api.java.operators.Operator

getName, getParallelism, getResultType, name, setParallelism

Methods inherited from class org.apache.flink.api.java.DataSet

aggregate, checkSameExecutionContext, clean, coGroup, cross, crossWithHuge, crossWithTiny, distinct, distinct, distinct, distinct, filter, first, flatMap, getExecutionEnvironment, getType, groupBy, groupBy, groupBy, iterate, iterateDelta, join, join, joinWithHuge, joinWithTiny, map, mapPartition, max, maxBy, min, minBy, output, partitionByHash, partitionByHash, partitionByHash, partitionCustom, partitionCustom, partitionCustom, print, printToErr, project, rebalance, reduce, reduceGroup, runOperation, sum, union, write, write, writeAsCsv, writeAsCsv, writeAsCsv, writeAsCsv, writeAsFormattedText, writeAsFormattedText, writeAsText, writeAsText

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleInputOperator

protected SingleInputOperator(DataSet<IN> input,
                   TypeInformation<OUT> resultType)

Method Detail

getInput

public DataSet<IN> getInput()

Gets the data set that this operation uses as its input.

Returns:

The data set that this operation uses as its input.

getInputType

public TypeInformation<IN> getInputType()

Gets the type information of the data type of the input data set. This method returns equivalent information as getInput().getType().

Returns:

The input data type.

translateToDataFlow

protected abstract SingleInputOperator<?,OUT,?> translateToDataFlow(Operator<IN> input)

Translates this operation to a data flow operator of the common data flow API.

Parameters:

input - The data flow operator that produces this operation's input data.

Returns:

The translated data flow operator.