org.apache.flink.api.java.operators

类 CrossOperator.DefaultCross<I1,I2>

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.TwoInputOperator<IN1,IN2,OUT,O>

org.apache.flink.api.java.operators.TwoInputUdfOperator<I1,I2,OUT,CrossOperator<I1,I2,OUT>>

org.apache.flink.api.java.operators.CrossOperator<I1,I2,org.apache.flink.api.java.tuple.Tuple2<I1,I2>>

org.apache.flink.api.java.operators.CrossOperator.DefaultCross<I1,I2>

类型参数:

I1 - The type of the first input DataSet of the Cross transformation.

I2 - The type of the second input DataSet of the Cross transformation.

所有已实现的接口:

UdfOperator<CrossOperator<I1,I2,org.apache.flink.api.java.tuple.Tuple2<I1,I2>>>

封闭类:

CrossOperator<I1,I2,OUT>

@Public
public static final class CrossOperator.DefaultCross<I1,I2>
extends CrossOperator<I1,I2,org.apache.flink.api.java.tuple.Tuple2<I1,I2>>

A Cross transformation that wraps pairs of crossed elements into Tuple2.

It also represents the DataSet that is the result of a Cross transformation.

另请参阅:

Tuple2, DataSet

嵌套类概要

从类继承的嵌套类/接口 org.apache.flink.api.java.operators.CrossOperator

CrossOperator.CrossProjection<I1,I2>, CrossOperator.DefaultCross<I1,I2>, CrossOperator.ProjectCross<I1,I2,OUT extends org.apache.flink.api.java.tuple.Tuple>, CrossOperator.ProjectCrossFunction<T1,T2,R extends org.apache.flink.api.java.tuple.Tuple>

字段概要

从类继承的字段 org.apache.flink.api.java.operators.Operator

minResources, name, parallelism, preferredResources

从类继承的字段 org.apache.flink.api.java.DataSet

context

构造器概要

构造器

构造器和说明
DefaultCross(DataSet<I1> input1, DataSet<I2> input2, org.apache.flink.api.common.operators.base.CrossOperatorBase.CrossHint hint, String defaultName)

方法概要

限定符和类型	方法和说明
<OUT extends org.apache.flink.api.java.tuple.Tuple> CrossOperator.ProjectCross<I1,I2,OUT>	projectFirst(int... firstFieldIndexes) Initiates a ProjectCross transformation and projects the first cross input.
<OUT extends org.apache.flink.api.java.tuple.Tuple> CrossOperator.ProjectCross<I1,I2,OUT>	projectSecond(int... secondFieldIndexes) Initiates a ProjectCross transformation and projects the second cross input.
<R> CrossOperator<I1,I2,R>	with(org.apache.flink.api.common.functions.CrossFunction<I1,I2,R> function) Finalizes a Cross transformation by applying a CrossFunction to each pair of crossed elements.

从类继承的方法 org.apache.flink.api.java.operators.CrossOperator

getCrossHint, getFunction, translateToDataFlow

从类继承的方法 org.apache.flink.api.java.operators.TwoInputUdfOperator

extractSemanticAnnotationsFromUdf, getAnalyzedUdfSemanticsFlag, getBroadcastSets, getParameters, getSemanticProperties, returns, returns, returns, setAnalyzedUdfSemanticsFlag, setSemanticProperties, udfWithForwardedFieldsFirstAnnotation, udfWithForwardedFieldsSecondAnnotation, withBroadcastSet, withForwardedFieldsFirst, withForwardedFieldsSecond, withParameters

从类继承的方法 org.apache.flink.api.java.operators.TwoInputOperator

getInput1, getInput1Type, getInput2, getInput2Type

从类继承的方法 org.apache.flink.api.java.operators.Operator

getMinResources, getName, getParallelism, getPreferredResources, getResultType, name, setParallelism

从类继承的方法 org.apache.flink.api.java.DataSet

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

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

DefaultCross

public DefaultCross(DataSet<I1> input1,
                    DataSet<I2> input2,
                    org.apache.flink.api.common.operators.base.CrossOperatorBase.CrossHint hint,
                    String defaultName)

方法详细资料

with

public <R> CrossOperator<I1,I2,R> with(org.apache.flink.api.common.functions.CrossFunction<I1,I2,R> function)

Finalizes a Cross transformation by applying a CrossFunction to each pair of crossed elements.

Each CrossFunction call returns exactly one element.

参数:

function - The CrossFunction that is called for each pair of crossed elements.

返回:

An CrossOperator that represents the crossed result DataSet

另请参阅:

CrossFunction, DataSet

projectFirst

public <OUT extends org.apache.flink.api.java.tuple.Tuple> CrossOperator.ProjectCross<I1,I2,OUT> projectFirst(int... firstFieldIndexes)

Initiates a ProjectCross transformation and projects the first cross input.

If the first cross input is a Tuple DataSet, fields can be selected by their index. If the first cross input is not a Tuple DataSet, no parameters should be passed.

Fields of the first and second input can be added by chaining the method calls of CrossOperator.ProjectCross.projectFirst(int...) and CrossOperator.ProjectCross.projectSecond(int...). Note: With the current implementation, the Project transformation looses type information.

参数:

firstFieldIndexes - If the first input is a Tuple DataSet, the indexes of the selected fields. For a non-Tuple DataSet, do not provide parameters. The order of fields in the output tuple is defined by to the order of field indexes.

返回:

A ProjectCross which represents the projected cross result.

另请参阅:

Tuple, DataSet, CrossOperator.ProjectCross

projectSecond

public <OUT extends org.apache.flink.api.java.tuple.Tuple> CrossOperator.ProjectCross<I1,I2,OUT> projectSecond(int... secondFieldIndexes)

Initiates a ProjectCross transformation and projects the second cross input.

If the second cross input is a Tuple DataSet, fields can be selected by their index. If the second cross input is not a Tuple DataSet, no parameters should be passed.

Fields of the first and second input can be added by chaining the method calls of CrossOperator.ProjectCross.projectFirst(int...) and CrossOperator.ProjectCross.projectSecond(int...). Note: With the current implementation, the Project transformation looses type information.

参数:

secondFieldIndexes - If the second input is a Tuple DataSet, the indexes of the selected fields. For a non-Tuple DataSet, do not provide parameters. The order of fields in the output tuple is defined by to the order of field indexes.

返回:

A ProjectCross which represents the projected cross result.

另请参阅:

Tuple, DataSet, CrossOperator.ProjectCross