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Module 1 labs - Enrichment and Filtering #80

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Module 1 labs - Enrichment and Filtering
manoellins May 8, 2024
f90a9d7
Module 1 labs - Enrichment and Filtering
manoellins May 9, 2024
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4 changes: 2 additions & 2 deletions ...rc/main/java/org/apache/flink/training/exercises/ridecleansing/RideCleansingExercise.java
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,7 @@
import org.apache.flink.streaming.api.functions.source.SourceFunction;
import org.apache.flink.training.exercises.common.datatypes.TaxiRide;
import org.apache.flink.training.exercises.common.sources.TaxiRideGenerator;
import org.apache.flink.training.exercises.common.utils.MissingSolutionException;
import org.apache.flink.training.exercises.common.utils.GeoUtils;

/**
* The Ride Cleansing exercise from the Flink training.
Expand Down Expand Up @@ -80,7 +80,7 @@ public JobExecutionResult execute() throws Exception {
public static class NYCFilter implements FilterFunction<TaxiRide> {
@Override
public boolean filter(TaxiRide taxiRide) throws Exception {
throw new MissingSolutionException();
return GeoUtils.isInNYC(taxiRide.startLon,taxiRide.startLat) && GeoUtils.isInNYC(taxiRide.endLon,taxiRide.endLat);
}
}
}
23 changes: 18 additions & 5 deletions ...rc/main/java/org/apache/flink/training/exercises/ridesandfares/RidesAndFaresExercise.java
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Expand Up @@ -19,6 +19,8 @@
package org.apache.flink.training.exercises.ridesandfares;

import org.apache.flink.api.common.JobExecutionResult;
import org.apache.flink.api.common.state.ValueState;
import org.apache.flink.api.common.state.ValueStateDescriptor;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
Expand All @@ -31,7 +33,6 @@
import org.apache.flink.training.exercises.common.datatypes.TaxiRide;
import org.apache.flink.training.exercises.common.sources.TaxiFareGenerator;
import org.apache.flink.training.exercises.common.sources.TaxiRideGenerator;
import org.apache.flink.training.exercises.common.utils.MissingSolutionException;
import org.apache.flink.util.Collector;

/**
Expand Down Expand Up @@ -98,20 +99,32 @@ public static void main(String[] args) throws Exception {

public static class EnrichmentFunction
extends RichCoFlatMapFunction<TaxiRide, TaxiFare, RideAndFare> {

private transient ValueState<TaxiFare> fareState;
private transient ValueState<TaxiRide> rideState;
@Override
public void open(Configuration config) throws Exception {
throw new MissingSolutionException();
fareState = getRuntimeContext().getState(new ValueStateDescriptor<>("fareState", TaxiFare.class));
rideState = getRuntimeContext().getState(new ValueStateDescriptor<>("rideState", TaxiRide.class));
}

@Override
public void flatMap1(TaxiRide ride, Collector<RideAndFare> out) throws Exception {
throw new MissingSolutionException();
if(fareState.value() == null){
rideState.update(ride);
}else{
out.collect(new RideAndFare(ride,fareState.value()));
fareState.clear();
}
}

@Override
public void flatMap2(TaxiFare fare, Collector<RideAndFare> out) throws Exception {
throw new MissingSolutionException();
if(rideState.value() == null){
fareState.update(fare);
}else{
out.collect(new RideAndFare(rideState.value(),fare));
rideState.clear();
}
}
}
}