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Code Issues Releases Wiki Activity

prepare for release v0.1.0

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Stefan Schroeder 2013-11-22 16:54:15 +01:00
parent 77d38de461
commit a85b0fc395
304 changed files with 4035 additions and 64795 deletions
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149
jsprit-instances/src/main/java/readers/ChristofidesReader.java
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/*******************************************************************************
* Copyright (C) 2013 Stefan Schroeder
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3.0 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
package readers;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import org.apache.log4j.Logger;
import readers.ChristofidesReader;
import util.Coordinate;
import basics.route.Vehicle;
import basics.route.VehicleImpl;
import basics.route.VehicleType;
import basics.route.VehicleTypeImpl;
import basics.Service;
import basics.VehicleRoutingProblem;
import basics.VehicleRoutingProblem.FleetSize;
/**
* Reader that reads Christophides, Mingozzi and Toth instances.
*
* <p>Files and file-description can be found <a href="http://neo.lcc.uma.es/vrp/vrp-instances/capacitated-vrp-instances/">here</a>.
*
* @author stefan schroeder
*
*/
public class ChristofidesReader {
private static Logger logger = Logger.getLogger(ChristofidesReader.class);
private final VehicleRoutingProblem.Builder vrpBuilder;
private double coordProjectionFactor = 1;
/**
* Constructs the reader.
*
* @param vrpBuilder
*/
public ChristofidesReader(VehicleRoutingProblem.Builder vrpBuilder) {
super();
this.vrpBuilder = vrpBuilder;
}
/**
* Reads instance-file and memorizes vehicles, customers and so forth in
* {@link VehicleRoutingProblem.Builder}.
*
* @param fileName
*/
public void read(String fileName){
vrpBuilder.setFleetSize(FleetSize.INFINITE);
BufferedReader reader = getReader(fileName);
int vehicleCapacity = 0;
double serviceTime = 0.0;
double endTime = Double.MAX_VALUE;
int counter = 0;
String line = null;
while((line = readLine(reader)) != null){
line = line.replace("\r", "");
line = line.trim();
String[] tokens = line.split(" ");
if(counter == 0){
vehicleCapacity = Integer.parseInt(tokens[1].trim());
endTime = Double.parseDouble(tokens[2].trim());
serviceTime = Double.parseDouble(tokens[3].trim());
}
else if(counter == 1){
Coordinate depotCoord = makeCoord(tokens[0].trim(),tokens[1].trim());
VehicleTypeImpl vehicleType = VehicleTypeImpl.Builder.newInstance("christophidesType", vehicleCapacity).
setCostPerDistance(1.0).build();
Vehicle vehicle = VehicleImpl.Builder.newInstance("christophidesVehicle").setLatestArrival(endTime).setLocationCoord(depotCoord).
setType(vehicleType).build();
vrpBuilder.addVehicle(vehicle);
}
else{
Coordinate customerCoord = makeCoord(tokens[0].trim(),tokens[1].trim());
int demand = Integer.parseInt(tokens[2].trim());
String customer = Integer.valueOf(counter-1).toString();
Service service = Service.Builder.newInstance(customer, demand).setServiceTime(serviceTime).setCoord(customerCoord).build();
vrpBuilder.addService(service);
}
counter++;
}
close(reader);
}
public void setCoordProjectionFactor(double coordProjectionFactor) {
this.coordProjectionFactor = coordProjectionFactor;
}
private void close(BufferedReader reader) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
logger.error(e);
System.exit(1);
}
}
private String readLine(BufferedReader reader) {
try {
return reader.readLine();
} catch (IOException e) {
e.printStackTrace();
logger.error(e);
System.exit(1);
return null;
}
}
private Coordinate makeCoord(String xString, String yString) {
double x = Double.parseDouble(xString);
double y = Double.parseDouble(yString);
return new Coordinate(x*coordProjectionFactor,y*coordProjectionFactor);
}
private BufferedReader getReader(String solomonFile) {
BufferedReader reader = null;
try {
reader = new BufferedReader(new FileReader(solomonFile));
} catch (FileNotFoundException e1) {
e1.printStackTrace();
logger.error(e1);
System.exit(1);
}
return reader;
}
}