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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;
import java.util.List;
import org.apache.bigtop.datagenerators.locations.Location;
import org.apache.bigtop.datagenerators.samplers.SeedFactory;
import org.apache.bigtop.datagenerators.samplers.samplers.Sampler;
import org.apache.bigtop.datagenerators.weatherman.internal.WeatherParametersReader;
import org.apache.bigtop.datagenerators.weatherman.internal.WeatherSamplerBuilder;
import org.apache.bigtop.datagenerators.weatherman.internal.WeatherStationParameters;
import org.joda.time.LocalDate;
/**
* Generates daily weather records for a given location.
*
* @author rnowling
*
*/
public class WeatherGenerator implements Sampler<WeatherRecord> {
private final Sampler<WeatherRecord> weatherSampler;
/**
* Initializes the generator.
*
* @param startDate
* - first day of simulation
* @param location
* - location to simulate weather for
* @param seedFactory
* - for initializing seeds
* @throws Exception
* - if weather parameter data cannot be read
*/
public WeatherGenerator(LocalDate startDate, Location location,
SeedFactory seedFactory) throws Exception {
List<WeatherStationParameters> parameters = new WeatherParametersReader()
.readParameters();
WeatherSamplerBuilder builder = new WeatherSamplerBuilder(parameters,
location, startDate, seedFactory);
weatherSampler = builder.build();
}
/**
* Generates a daily WeatherRecord for consecutive days, one day per call.
*
* @return Weather data for a single day
* @throws Exception
*/
public WeatherRecord sample() throws Exception {
return weatherSampler.sample();
}
}
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