org.apache.flink.api.java.functions

类 FlatMapIterator<IN,OUT>

java.lang.Object

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

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

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

类型参数:

IN - Type of the input elements.

OUT - Type of the returned elements.

所有已实现的接口:

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

已过时。

All Flink DataSet APIs are deprecated since Flink 1.18 and will be removed in a future Flink major version. You can still build your application in DataSet, but you should move to either the DataStream and/or Table API.

@Deprecated
 @PublicEvolving
public abstract class FlatMapIterator<IN,OUT>
extends org.apache.flink.api.common.functions.RichFlatMapFunction<IN,OUT>

A convenience variant of the RichFlatMapFunction that returns elements through an iterator, rather then through a collector. In all other respects, it behaves exactly like the FlatMapFunction.

The function needs to be serializable, as defined in Serializable.

另请参阅:

FLIP-131: Consolidate the user-facing Dataflow SDKs/APIs (and deprecate the DataSet API, 序列化表格

构造器概要

构造器

构造器和说明
FlatMapIterator() 已过时。

方法概要

限定符和类型	方法和说明
abstract Iterator<OUT>	flatMap(IN value) 已过时。 The core method of the function.
void	flatMap(IN value, org.apache.flink.util.Collector<OUT> out) 已过时。 Delegates calls to the flatMap(Object) method.

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

从接口继承的方法 org.apache.flink.api.common.functions.RichFunction

open

构造器详细资料

FlatMapIterator

public FlatMapIterator()

已过时。

方法详细资料

flatMap

public abstract Iterator<OUT> flatMap(IN value)
                               throws Exception

已过时。

The core method of the function. Takes an element from the input data set and transforms it into zero, one, or more elements.

参数:

value - The input value.

返回:

An iterator over the returned elements.

抛出:

Exception - This method may throw exceptions. Throwing an exception will cause the operation to fail and may trigger recovery.

flatMap

public final void flatMap(IN value,
                          org.apache.flink.util.Collector<OUT> out)
                   throws Exception

已过时。

Delegates calls to the flatMap(Object) method.

指定者:

flatMap 在接口中 org.apache.flink.api.common.functions.FlatMapFunction<IN,OUT>

指定者:

flatMap 在类中 org.apache.flink.api.common.functions.RichFlatMapFunction<IN,OUT>

抛出:

Exception