/*
* Copyright (c) 2013 LDBC
* Linked Data Benchmark Council (http://ldbc.eu)
*
* This file is part of ldbc_socialnet_dbgen.
*
* ldbc_socialnet_dbgen is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* ldbc_socialnet_dbgen is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with ldbc_socialnet_dbgen. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright (C) 2011 OpenLink Software <bdsmt@openlinksw.com>
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; only Version 2 of the License dated
* June 1991.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package ldbc.snb.datagen.dictionary;
import ldbc.snb.datagen.generator.DatagenParams;
import ldbc.snb.datagen.util.RandomGeneratorFarm;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Set;
import java.util.TreeMap;
/**
* This class reads the file containing the names and countries for the companies used in the ldbc socialnet generation and
* provides access methods to get such data.
*/
public class CompanyDictionary {
private static final String SEPARATOR = " ";
private TreeMap<Long, String> companyName;
/**
* < @brief A map containing the name of each company.*
*/
private TreeMap<Long, Integer> companyCountry;
/**
* < @brief A map containing the location of each company. *
*/
private TreeMap<Integer, ArrayList<Long>> companiesByCountry;
/**
* < @brief A map containing the companies of each country. *
*/
private PlaceDictionary placeDictionary;
/**
* < @brief The location dictionary.*
*/
private double probUnCorrelatedCompany; /**< @brief The probability of working in a uncorrelated company.**/
/**
* @param probUnCorrelatedCompany: Probability of selecting a country unrelated company.
* @brief Constructor.
*/
public CompanyDictionary(PlaceDictionary placeDictionary,
double probUnCorrelatedCompany) {
this.placeDictionary = placeDictionary;
this.probUnCorrelatedCompany = probUnCorrelatedCompany;
this.companyName = new TreeMap<Long, String>();
this.companyCountry = new TreeMap<Long, Integer>();
this.companiesByCountry = new TreeMap<Integer, ArrayList<Long>>();
for (Integer id : placeDictionary.getCountries()) {
this.companiesByCountry.put(id, new ArrayList<Long>());
}
load(DatagenParams.companiesDictionaryFile);
}
/**
* @param fileName The file to load.
* @brief Loads the company dictionary file.
*/
private void load(String fileName) {
try {
BufferedReader dictionary = new BufferedReader(
new InputStreamReader(getClass().getResourceAsStream(fileName), "UTF-8"));
String line;
int currentId = -1;
long totalNumCompanies = 0;
while ((line = dictionary.readLine()) != null) {
String data[] = line.split(SEPARATOR);
String locationName = data[0];
String companyName = data[1].trim();
if (placeDictionary.getCountryId(locationName) != PlaceDictionary.INVALID_LOCATION) {
currentId = placeDictionary.getCountryId(locationName);
companiesByCountry.get(currentId).add(totalNumCompanies);
companyCountry.put(totalNumCompanies, currentId);
this.companyName.put(totalNumCompanies, companyName);
totalNumCompanies++;
}
}
dictionary.close();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* @param company The company identifier.
* @return The id of the country.
* @brief Gets the company country id.
*/
public int getCountry(Long company) {
return companyCountry.get(company);
}
/**
* @param randomFarm The random farm used to get random numbers.
* @param countryId: A country id.
* @return The id of the company.
* @brief Gets a random company of the input country. In case the given country doesn't any company
* a random one will be selected.
*/
public long getRandomCompany(RandomGeneratorFarm randomFarm, int countryId) {
int locId = countryId;
ArrayList<Integer> countries = placeDictionary.getCountries();
if (randomFarm.get(RandomGeneratorFarm.Aspect.UNCORRELATED_COMPANY).nextDouble() <= probUnCorrelatedCompany) {
locId = countries.get(randomFarm.get(RandomGeneratorFarm.Aspect.UNCORRELATED_COMPANY_LOCATION).nextInt(countries.size()));
}
// In case the country doesn't have any company select another country.
while (companiesByCountry.get(locId).size() == 0) {
locId = countries.get(randomFarm.get(RandomGeneratorFarm.Aspect.UNCORRELATED_COMPANY_LOCATION).nextInt(countries.size()));
}
int randomCompanyIdx = randomFarm.get(RandomGeneratorFarm.Aspect.COMPANY).nextInt(companiesByCountry.get(locId).size());
return companiesByCountry.get(locId).get(randomCompanyIdx);
}
/**
* @return The set of companies.
* @brief Gets the set of of companies in the dictionary.
*/
public Set<Long> getCompanies() {
return companyCountry.keySet();
}
/**
* @return The number of companies.
* @brief Gets the number of companies in the dictionary.
*/
public int getNumCompanies() {
return companyName.size();
}
/**
* @param id The company's id.
* @return The name of the company.
* @brief Gets the name of a company.
*/
public String getCompanyName(long id) {
return companyName.get(id);
}
}