| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.flink.training.solutions.ridecleansing.scala |
| |
| import org.apache.flink.streaming.api.scala._ |
| import org.apache.flink.training.exercises.common.sources.TaxiRideGenerator |
| import org.apache.flink.training.exercises.common.utils.ExerciseBase._ |
| import org.apache.flink.training.exercises.common.utils.{ExerciseBase, GeoUtils} |
| |
| /** |
| * Scala reference implementation for the "Ride Cleansing" exercise of the Flink training in the docs. |
| * |
| * The task of the exercise is to filter a data stream of taxi ride records to keep only rides that |
| * start and end within New York City. The resulting stream should be printed to the |
| * standard out. |
| * |
| */ |
| object RideCleansingSolution { |
| |
| def main(args: Array[String]) { |
| |
| // set up the execution environment |
| val env = StreamExecutionEnvironment.getExecutionEnvironment |
| env.setParallelism(ExerciseBase.parallelism) |
| |
| // get the taxi ride data stream |
| val rides = env.addSource(rideSourceOrTest(new TaxiRideGenerator())) |
| |
| val filteredRides = rides |
| .filter(r => GeoUtils.isInNYC(r.startLon, r.startLat) && GeoUtils.isInNYC(r.endLon, r.endLat)) |
| |
| // print the filtered stream |
| printOrTest(filteredRides) |
| |
| // run the cleansing pipeline |
| env.execute("Taxi Ride Cleansing") |
| } |
| |
| } |