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Diffstat (limited to 'bigtop-data-generators/bigtop-weatherman/src/main/java/org/apache/bigtop/datagenerators/weatherman/WeatherGenerator.java')
-rw-r--r-- | bigtop-data-generators/bigtop-weatherman/src/main/java/org/apache/bigtop/datagenerators/weatherman/WeatherGenerator.java | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/bigtop-data-generators/bigtop-weatherman/src/main/java/org/apache/bigtop/datagenerators/weatherman/WeatherGenerator.java b/bigtop-data-generators/bigtop-weatherman/src/main/java/org/apache/bigtop/datagenerators/weatherman/WeatherGenerator.java new file mode 100644 index 00000000..0601c147 --- /dev/null +++ b/bigtop-data-generators/bigtop-weatherman/src/main/java/org/apache/bigtop/datagenerators/weatherman/WeatherGenerator.java @@ -0,0 +1,67 @@ +/** + * 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(); + } +} |