org.apache.flink.api.java.operators.translation

类 TwoKeyExtractingMapper<T,K1,K2>

java.lang.Object

org.apache.flink.api.common.functions.AbstractRichFunction

org.apache.flink.api.common.functions.RichMapFunction<T,org.apache.flink.api.java.tuple.Tuple3<K1,K2,T>>

org.apache.flink.api.java.operators.translation.TwoKeyExtractingMapper<T,K1,K2>

类型参数:

T - type of the values

K1 - type of the first key

K2 - type of the second key

所有已实现的接口:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.MapFunction<T,org.apache.flink.api.java.tuple.Tuple3<K1,K2,T>>, org.apache.flink.api.common.functions.RichFunction

@Internal
public final class TwoKeyExtractingMapper<T,K1,K2>
extends org.apache.flink.api.common.functions.RichMapFunction<T,org.apache.flink.api.java.tuple.Tuple3<K1,K2,T>>

Mapper that extracts two keys of a value.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
TwoKeyExtractingMapper(org.apache.flink.api.java.functions.KeySelector<T,K1> keySelector1, org.apache.flink.api.java.functions.KeySelector<T,K2> keySelector2)

方法概要

限定符和类型	方法和说明
org.apache.flink.api.java.tuple.Tuple3<K1,K2,T>	map(T value)

从类继承的方法 org.apache.flink.api.common.functions.AbstractRichFunction

close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

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

TwoKeyExtractingMapper

public TwoKeyExtractingMapper(org.apache.flink.api.java.functions.KeySelector<T,K1> keySelector1,
                              org.apache.flink.api.java.functions.KeySelector<T,K2> keySelector2)

方法详细资料

map

public org.apache.flink.api.java.tuple.Tuple3<K1,K2,T> map(T value)
                                                    throws Exception

指定者:

map 在接口中 org.apache.flink.api.common.functions.MapFunction<T,org.apache.flink.api.java.tuple.Tuple3<K1,K2,T>>

指定者:

map 在类中 org.apache.flink.api.common.functions.RichMapFunction<T,org.apache.flink.api.java.tuple.Tuple3<K1,K2,T>>

抛出:

Exception