org.apache.flink.api.java.functions

类 GroupReduceIterator<IN,OUT>

java.lang.Object

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

org.apache.flink.api.common.functions.RichGroupReduceFunction<IN,OUT>

org.apache.flink.api.java.functions.GroupReduceIterator<IN,OUT>

类型参数:

IN -

OUT -

所有已实现的接口:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.GroupReduceFunction<IN,OUT>, org.apache.flink.api.common.functions.RichFunction

@PublicEvolving
public abstract class GroupReduceIterator<IN,OUT>
extends org.apache.flink.api.common.functions.RichGroupReduceFunction<IN,OUT>

Base class that simplifies reducing all values provided as Iterable.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
GroupReduceIterator()

方法概要

限定符和类型	方法和说明
void	reduce(Iterable<IN> values, org.apache.flink.util.Collector<OUT> out)
abstract Iterator<OUT>	reduceGroup(Iterable<IN> values)

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

GroupReduceIterator

public GroupReduceIterator()

方法详细资料

reduceGroup

public abstract Iterator<OUT> reduceGroup(Iterable<IN> values)
                                   throws Exception

抛出:

Exception

reduce

public final void reduce(Iterable<IN> values,
                         org.apache.flink.util.Collector<OUT> out)
                  throws Exception

指定者:

reduce 在接口中 org.apache.flink.api.common.functions.GroupReduceFunction<IN,OUT>

指定者:

reduce 在类中 org.apache.flink.api.common.functions.RichGroupReduceFunction<IN,OUT>

抛出:

Exception