bigtop-master/bigtop-data-generators/bigpetstore-data-generator/src/main/java/org/apache/bigtop/datagenerators/bigpetstore/generators/store/StoreLocationPopulationPDF.java
/**
 * 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.bigpetstore.generators.store;

import java.util.List;

import org.apache.bigtop.datagenerators.locations.Location;
import org.apache.bigtop.datagenerators.samplers.pdfs.ProbabilityDensityFunction;

public class StoreLocationPopulationPDF implements ProbabilityDensityFunction<Location>
{
	double populationSum = 0.0;

	public StoreLocationPopulationPDF(List<Location> zipcodeTable)
	{
		long populationSum = 0L;
		for(Location record : zipcodeTable)
		{
			populationSum += record.getPopulation();
		}

		this.populationSum = ((double) populationSum);
	}

	public double probability(Location record)
	{
		return ((double) record.getPopulation()) / populationSum;
	}

}
