org.apache.flink.streaming.api.functions.aggregation

类 AggregationFunction<T>

java.lang.Object

org.apache.flink.streaming.api.functions.aggregation.AggregationFunction<T>

所有已实现的接口:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.ReduceFunction<T>

直接已知子类:

ComparableAggregator, SumAggregator

@Internal
public abstract class AggregationFunction<T>
extends Object
implements org.apache.flink.api.common.functions.ReduceFunction<T>

Holder class for aggregation types that can be used on a windowed stream or keyed stream.

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	AggregationFunction.AggregationType Aggregation types that can be used on a windowed stream or keyed stream.

构造器概要

构造器

构造器和说明
AggregationFunction()

方法概要

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.ReduceFunction

reduce

构造器详细资料

AggregationFunction

public AggregationFunction()