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/**
* 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.bigtop.datagenerators.weatherman.internal;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.InputStream;
import java.util.List;
import java.util.Scanner;
import org.apache.commons.lang3.tuple.Pair;
import com.google.common.collect.Lists;
public class WeatherParametersReader {
private InputStream getResource(File filename) throws Exception {
InputStream stream = getClass()
.getResourceAsStream("/input_data/" + filename);
return new BufferedInputStream(stream);
}
private WeatherStationParameters parseLine(String line) {
line = line.trim();
String[] cols = line.split(",");
String WBAN = cols[0];
String city = cols[1];
String state = cols[2];
double latitude = Double.parseDouble(cols[3]);
double longitude = Double.parseDouble(cols[4]);
Pair<Double, Double> coordinates = Pair.of(latitude, longitude);
double temperatureAverage = Double.parseDouble(cols[5]);
double temperatureRealCoeff = Double.parseDouble(cols[6]);
double temperatureImagCoeff = Double.parseDouble(cols[7]);
double temperatureDerivStd = Double.parseDouble(cols[8]);
double precipitationAverage = Double.parseDouble(cols[9]);
double windSpeedRealCoeff = Double.parseDouble(cols[10]);
double windSpeedImagCoeff = Double.parseDouble(cols[11]);
double windSpeedK = Double.parseDouble(cols[12]);
double windSpeedTheta = Double.parseDouble(cols[13]);
return new WeatherStationParameters(WBAN, city, state, coordinates,
temperatureAverage, temperatureRealCoeff, temperatureImagCoeff,
temperatureDerivStd, precipitationAverage, windSpeedRealCoeff,
windSpeedImagCoeff, windSpeedK, windSpeedTheta);
}
public List<WeatherStationParameters> readParameters() throws Exception {
InputStream inputStream = getResource(
WeatherConstants.WEATHER_PARAMETERS_FILE);
Scanner scanner = new Scanner(inputStream);
// skip header
scanner.nextLine();
List<WeatherStationParameters> parameterList = Lists.newArrayList();
while (scanner.hasNextLine()) {
String line = scanner.nextLine();
WeatherStationParameters parameters = parseLine(line);
parameterList.add(parameters);
}
scanner.close();
return parameterList;
}
}
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