Package org.apache.flink.streaming.examples.windowing.util

Class CarGeneratorFunction

java.lang.Object

org.apache.flink.streaming.examples.windowing.util.CarGeneratorFunction

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.connector.datagen.source.GeneratorFunction<Long,org.apache.flink.api.java.tuple.Tuple4<Integer,Integer,Double,Long>>

public class CarGeneratorFunction
extends Object
implements org.apache.flink.connector.datagen.source.GeneratorFunction<Long,org.apache.flink.api.java.tuple.Tuple4<Integer,Integer,Double,Long>>

A generator function for simulating car data.

This generator function generates a stream of car data in a form of a four-element tuple. The data includes the car's ID, its speed in kilometers per hour, the distance it has traveled in meters, and the timestamp of the data generation. The speed and distance of each car are randomly updated in each invocation of the map(Long) method.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
CarGeneratorFunction(int numOfCars)

Method Summary

Modifier and Type	Method	Description
org.apache.flink.api.java.tuple.Tuple4<Integer,Integer,Double,Long>	map(Long ignoredIndex)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.flink.connector.datagen.source.GeneratorFunction

close, open

Constructor Details

CarGeneratorFunction

public CarGeneratorFunction(int numOfCars)

Method Details

map

public org.apache.flink.api.java.tuple.Tuple4<Integer,Integer,Double,Long> map(Long ignoredIndex)
                                                                        throws Exception

Specified by:

map in interface org.apache.flink.connector.datagen.source.GeneratorFunction<Long,org.apache.flink.api.java.tuple.Tuple4<Integer,Integer,Double,Long>>

Throws:

Exception