org.apache.flink.api.java.operators

类 JoinOperator.JoinOperatorSets<I1,I2>

java.lang.Object

org.apache.flink.api.java.operators.join.JoinOperatorSetsBase<I1,I2>

org.apache.flink.api.java.operators.JoinOperator.JoinOperatorSets<I1,I2>

类型参数:

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

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

封闭类:

JoinOperator<I1,I2,OUT>

@Public
public static final class JoinOperator.JoinOperatorSets<I1,I2>
extends JoinOperatorSetsBase<I1,I2>

Intermediate step of a Join transformation.

To continue the Join transformation, select the join key of the first input DataSet by calling where(int...) or where(org.apache.flink.api.java.functions.KeySelector).

嵌套类概要

嵌套类

限定符和类型	类和说明
class	JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate Intermediate step of a Join transformation.

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

JoinOperatorSetsBase.JoinOperatorSetsPredicateBase

字段概要

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

input1, input2, joinHint, joinType

构造器概要

构造器

构造器和说明
JoinOperatorSets(DataSet<I1> input1, DataSet<I2> input2)
JoinOperatorSets(DataSet<I1> input1, DataSet<I2> input2, org.apache.flink.api.common.operators.base.JoinOperatorBase.JoinHint hint)

方法概要

限定符和类型	方法和说明
JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate	where(int... fields) Continues a Join transformation.
<K> JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate	where(org.apache.flink.api.java.functions.KeySelector<I1,K> keySelector) Continues a Join transformation and defines a KeySelector function for the first join DataSet.
JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate	where(String... fields) Continues a Join transformation.

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

JoinOperatorSets

public JoinOperatorSets(DataSet<I1> input1,
                        DataSet<I2> input2)

JoinOperatorSets

public JoinOperatorSets(DataSet<I1> input1,
                        DataSet<I2> input2,
                        org.apache.flink.api.common.operators.base.JoinOperatorBase.JoinHint hint)

方法详细资料

where

public JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate where(int... fields)

Continues a Join transformation.

Defines the Tuple fields of the first join DataSet that should be used as join keys.

Note: Fields can only be selected as join keys on Tuple DataSets.

覆盖:

where 在类中 JoinOperatorSetsBase<I1,I2>

参数:

fields - The indexes of the other Tuple fields of the first join DataSets that should be used as keys.

返回:

An incomplete Join transformation. Call JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate.equalTo(int...) or JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate.equalTo(KeySelector) to continue the Join.

另请参阅:

Tuple, DataSet

where

public JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate where(String... fields)

Continues a Join transformation.

Defines the fields of the first join DataSet that should be used as grouping keys. Fields are the names of member fields of the underlying type of the data set.

覆盖:

where 在类中 JoinOperatorSetsBase<I1,I2>

参数:

fields - The fields of the first join DataSets that should be used as keys.

返回:

An incomplete Join transformation. Call JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate.equalTo(int...) or JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate.equalTo(KeySelector) to continue the Join.

另请参阅:

Tuple, DataSet

where

public <K> JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate where(org.apache.flink.api.java.functions.KeySelector<I1,K> keySelector)

Continues a Join transformation and defines a KeySelector function for the first join DataSet.

The KeySelector function is called for each element of the first DataSet and extracts a single key value on which the DataSet is joined.

覆盖:

where 在类中 JoinOperatorSetsBase<I1,I2>

参数:

keySelector - The KeySelector function which extracts the key values from the DataSet on which it is joined.

返回:

An incomplete Join transformation. Call JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate.equalTo(int...) or JoinOperator.JoinOperatorSets.JoinOperatorSetsPredicate.equalTo(KeySelector) to continue the Join.

另请参阅:

KeySelector, DataSet