NoCriteria.java
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import org.chocosolver.solver.Model;
import org.chocosolver.solver.ParallelPortfolio;
import org.chocosolver.solver.Solution;
import org.chocosolver.solver.Solver;
import org.chocosolver.solver.constraints.Constraint;
import org.chocosolver.solver.objective.ParetoOptimizer;
import org.chocosolver.solver.search.strategy.Search;
import org.chocosolver.solver.variables.IntVar;
import org.chocosolver.solver.search.strategy.Search.*;
import java.io.*;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class NoCriteria {
public static void giveDomains (Model model, IntVar[] ugs, String dir, UG[] nodes){
int index = 0;
try {
File allUg = new File(dir + "/ugs_init.txt");
Scanner readerUg = new Scanner(allUg);
while (readerUg.hasNextLine()) {
String dataUg = readerUg.nextLine();
if(nodes[index].valid) {
String[] str_split = dataUg.split(",", 0);
int size = str_split.length;
int[] toInsert = new int[size];
for (int i = 0; i < size; i++) {
toInsert[i] = Integer.parseInt(str_split[i]);
}
ugs[index] = model.intVar("UG_" + (index), toInsert);
}
else {;
ugs[index] = model.intVar("UG_"+(index), 0);
}
index++;
}
readerUg.close();
} catch (FileNotFoundException e) {
System.out.println("An error occurred.");
e.printStackTrace();
}
}
public static void main(String[] args) throws IOException {
int areaLimit = Integer.parseInt(args[0]);
String fileDirectory = args[1];
ArrayList<Integer> islandUGs = new ArrayList<>();
String regionFile = args[3];
File island = new File("subregions/"+regionFile);
Scanner islandReader = new Scanner(island);
while (islandReader.hasNextLine()) {
islandUGs.add(Integer.parseInt(islandReader.nextLine()));
}
islandReader.close();
Model m = new Model("Forest Management");
System.out.println("Reading Input Files");
BufferedReader reader = new BufferedReader(new FileReader(fileDirectory + "/ugs_init.txt"));
int nUgs = 0;
while (reader.readLine() != null) nUgs++;
reader.close();
UG[] nodes = new UG[nUgs];
//if 0 ignore
int minBorder = Integer.parseInt(args[2]);
UG.setupInternalIds(nodes, fileDirectory);
if(minBorder <= 0)
UG.fillNoCriteria(nodes, fileDirectory, 0);
else
UG.fillNoCriteria(nodes, fileDirectory, minBorder);
for(int i = 0; i < nodes.length; i++){
if(islandUGs.contains(nodes[i].externalId)){
nodes[i].valid = true;
}
}
IntVar[] ugs = new IntVar[nUgs]; // same for the constraint variable array
giveDomains(m, ugs, fileDirectory, nodes); // reads the ugs_init file and initializes each variable with its possible prescription values as domain
System.out.println("Setting up Constraints");
for(int ugIndex = 0; ugIndex < nodes.length; ugIndex++) { //loops through every UG
//the propagator takes as parameters the index of the UG we are starting out from
//the nodes with all the info, the constraint variable array and the area limit
if(nodes[ugIndex].valid && !nodes[ugIndex].noAdjacencies) {
new Constraint("Area Limit Constraint", new CustomPropagatorFloat(ugIndex, nodes, ugs, areaLimit)).post();
}
}
FileWriter pairCrits;
pairCrits = new FileWriter("Results/"+regionFile+"-Exception.csv");
Solver solver = m.getSolver();
solver.setSearch(Search.activityBasedSearch(ugs));
//solver.setSearch(Search.minDomUBSearch(ugs));
FileWriter allSolutionPairs = new FileWriter("Results/"+"NC-"+regionFile+"-AllSolutions.csv");
System.out.println("Running Solver");
//8 hours 28800000
//12 hours 43200000
//13 hours 46800000
//14 hours 50400000
int l = 1;
long startTime = System.currentTimeMillis(); //fetch starting time
try{
while(solver.solve())
//while(solver.solve() & (System.currentTimeMillis()-startTime)<50400000)
{
allSolutionPairs.write("Solution: "+l+", TimeStamp: "+ (System.currentTimeMillis()-startTime)+"ms\n");
for(int i = 0; i < nodes.length; i++){
if(nodes[i].valid){
allSolutionPairs.write(nodes[i].externalId+","+ugs[i].getValue()+"\n");
}
}
allSolutionPairs.flush();
System.out.println("Found solution-" + l);
l++;
}
}
catch (OutOfMemoryError e){
pairCrits.write("Reached Exception after "+(System.currentTimeMillis()-startTime)+" milliseconds");
}
System.out.println("Here");
pairCrits.close();
}
}