// The purpose of this sample is to output a multidimensional array x[i][j] to illustrate how arrays and subarrays are managed.
// To access the elements of an array, you must first access the subarrays up to the last dimension, then you can get the values.
// Here, as there are two dimensions, you have to get one subarray from which you can directly get the values.
//
// The array of integers is indexed by two sets of strings..
//
// The simplified model is:
//
// {string} s1 = ...;
// {string} s2 = ...;
// {int} x[s1][s2] = ...;
//
static int sample2()
{
int status = 127;
const string DATADIR = "../..";
OplFactory.DebugMode = true;
OplFactory oplF = new OplFactory();
try
{
OplErrorHandler errHandler = oplF.CreateOplErrorHandler(Console.Out);
OplRunConfiguration rc = oplF.CreateOplRunConfiguration(DATADIR + "/iterators.mod");
OplModel opl = rc.GetOplModel();
opl.Generate();
// Get the x, s1 and s2 elements from the OplModel.
IIntMap x = opl.GetElement("x").AsIntMap();
ISymbolSet s1 = opl.GetElement("s1").AsSymbolSet();
ISymbolSet s2 = opl.GetElement("s2").AsSymbolSet();
// Iterate on the first indexer.
IEnumerator it1 = s1.GetEnumerator();
while (it1.MoveNext())
{
// Get the second dimension array from the first dimension.
IIntMap sub = x.GetSub((string)it1.Current);
// Iterate on the second indexer of x (that is the indexer of the subarray).
IEnumerator it2 = s2.GetEnumerator();
while (it2.MoveNext())
{
// This is the last dimension of the array, so you can directly use the get method.
Console.Out.WriteLine(it1.Current + " " + it2.Current + " " + sub.Get((string)it2.Current));
}
}
Console.Out.WriteLine("---------------------");
status = 0;
}
catch (ILOG.OPL.OplException ex)
{
Console.WriteLine(ex.Message);
status = 1;
}
catch (IloException ex)
{
Console.Out.WriteLine("### exception: " + ex.Message);
status = 2;
}
catch (System.Exception ex)
{
Console.Out.WriteLine("### UNEXPECTED ERROR ..." + ex.Message);
status = 3;
}
oplF.End();
return(status);
}
static int sample3()
{
int status = 0;
OplFactory.DebugMode = true;
OplFactory oplF = new OplFactory();
try
{
OplErrorHandler errHandler = oplF.CreateOplErrorHandler(Console.Out);
OplSettings settings = oplF.CreateOplSettings(errHandler);
OplModelSource src = oplF.CreateOplModelSourceFromString(getModelTextSample3(), "tuple array iterator");
OplModelDefinition def = oplF.CreateOplModelDefinition(src, settings);
Cplex cplex = oplF.CreateCplex();
OplModel opl = oplF.CreateOplModel(def, cplex);
opl.Generate();
// get the string set used to index the array of tuples
ITupleMap arrayT = opl.GetElement("arrayT").AsTupleMap();
ISymbolSet ids = opl.GetElement("ids").AsSymbolSet();
// iterate on the index set to retrieve the tuples stored in the array
IEnumerator it = ids.GetEnumerator();
while (it.MoveNext())
{
Console.Out.Write("arrayT[" + it.Current + "] = ");
IMapIndexArray id = oplF.MapIndexArray(0);
id.Add(it.Current.ToString());
ITuple t = arrayT.MakeTuple();
arrayT.GetAt(id, t);
Console.Out.WriteLine(t);
}
}
catch (ILOG.OPL.OplException ex)
{
Console.WriteLine(ex.Message);
status = 1;
}
catch (IloException e)
{
status = 2;
Console.Out.WriteLine("### exception: " + e.Message);
}
catch (System.Exception ex)
{
status = 3;
Console.Out.WriteLine("### UNEXPECTED ERROR ..." + ex.Message);
}
oplF.End();
return(status);
}
static int Main(string[] args)
{
int status = 127;
try
{
OplFactory.DebugMode = true;
OplFactory oplF = new OplFactory();
OplErrorHandler errHandler = oplF.CreateOplErrorHandler();
OplSettings settings = oplF.CreateOplSettings(errHandler);
Cplex masterCplex = oplF.CreateCplex();
masterCplex.SetOut(null);
OplErrorHandler errorHandler = oplF.CreateOplErrorHandler();
OplRunConfiguration masterRC = oplF.CreateOplRunConfiguration(DATADIR + "/cutstock_change.mod", DATADIR + "/cutstock_change.dat");
masterRC.ErrorHandler = errorHandler;
masterRC.Cplex = masterCplex;
OplModel masterOpl = masterRC.OplModel;
masterOpl.Generate();
OplDataElements masterDataElements = masterOpl.MakeDataElements();
OplModelSource subSource = oplF.CreateOplModelSource(DATADIR + "/cutstock-sub.mod");
OplModelDefinition subDef = oplF.CreateOplModelDefinition(subSource, settings);
Cplex subCplex = oplF.CreateCplex();
subCplex.SetOut(null);
int nWdth = masterDataElements.GetElement("Amount").AsIntMap().Size;
ArrayList masterVars = new ArrayList();
INumVarMap cuts = masterOpl.GetElement("Cut").AsNumVarMap();
for (int i = 1; i <= nWdth; i++)
{
masterVars.Add(cuts.Get(i));
}
double best;
double curr = double.MaxValue;
do
{
best = curr;
// Make master model
Console.Out.WriteLine("Solve master.");
if (masterCplex.Solve())
{
curr = masterCplex.ObjValue;
Console.Out.WriteLine("OBJECTIVE: " + curr);
status = 0;
}
else
{
Console.Out.WriteLine("No solution!");
status = 1;
}
// set sub model data
OplDataElements subDataElements = oplF.CreateOplDataElements();
subDataElements.AddElement(masterDataElements.GetElement("RollWidth"));
subDataElements.AddElement(masterDataElements.GetElement("Size"));
subDataElements.AddElement(masterDataElements.GetElement("Duals"));
// get reduced costs and set them in sub problem
INumMap duals = subDataElements.GetElement("Duals").AsNumMap();
for (int i = 1; i <= nWdth; i++)
{
IForAllRange forAll = (IForAllRange)masterOpl.GetElement("ctFill").AsConstraintMap().Get(i);
duals.Set(i, masterCplex.GetDual(forAll));
}
// make sub model
OplModel subOpl = oplF.CreateOplModel(subDef, subCplex);
subOpl.AddDataSource(subDataElements);
subOpl.Generate();
Console.Out.WriteLine("Solve sub.");
if (subCplex.Solve())
{
Console.Out.WriteLine("OBJECTIVE: " + subCplex.ObjValue);
status = 0;
}
else
{
Console.Out.WriteLine("No solution!");
status = 1;
}
if (subCplex.ObjValue > -RC_EPS)
{
break;
}
;
// Add variable in master model
INumVar newVar = masterCplex.NumVar(0, double.MaxValue);
IObjective masterObj = masterOpl.Objective;
masterCplex.SetLinearCoef(masterObj, newVar, 1);
for (int i = 1; i <= nWdth; i++)
{
double coef = subCplex.GetValue(subOpl.GetElement("Use").AsIntVarMap().Get(i));
IForAllRange forAll = (IForAllRange)masterOpl.GetElement("ctFill").AsConstraintMap().Get(i);
masterCplex.SetLinearCoef(forAll, newVar, coef);
}
masterVars.Add(newVar);
subOpl.End();
} while (best != curr && status == 0);
INumVar[] masterVarsA = (INumVar[])masterVars.ToArray(typeof(INumVar));
masterCplex.Add(masterCplex.Conversion(masterVarsA, NumVarType.Int));
if (masterCplex.Solve())
{
Console.Out.WriteLine("OBJECTIVE: " + masterCplex.ObjValue);
}
oplF.End();
}
catch (ILOG.OPL.OplException ex)
{
Console.WriteLine(ex.Message);
status = 2;
}
catch (ILOG.Concert.Exception ex)
{
Console.WriteLine(ex.Message);
status = 3;
}
catch (System.Exception ex)
{
Console.WriteLine(ex.Message);
status = 4;
}
Console.WriteLine("--Press <Enter> to exit--");
Console.ReadLine();
return(status);
}
// The purpose of this sample is to check the result of filtering by iterating on the generated data element.
//
// The data element is an array of strings that is indexed by a set of strings.
// It is filled as the result of an iteration on a set of tuples that filters out the duplicates.
// It is based on the model used in "Sparsity" run configuration of the "transp" example.
//
//
// The simplified model is:
//
// {string} Products = ...;
// tuple Route { string p; string o; string d; }
// {Route} Routes = ...;
// {string} orig[p in Products] = { o | <p,o,d> in Routes };
//
static int sample1()
{
int status = 127;
const string DATADIR = "../..";
OplFactory.DebugMode = true;
OplFactory oplF = new OplFactory();
try
{
OplErrorHandler errHandler = oplF.CreateOplErrorHandler(Console.Out);
OplRunConfiguration rc = oplF.CreateOplRunConfiguration(DATADIR + "/transp2.mod", DATADIR + "/transp2.dat");
OplModel opl = rc.GetOplModel();
opl.Generate();
Console.Out.WriteLine("Verification of the computation of orig: ");
// Get the orig, Routes, Product elements from the OplModel.
ISymbolSetMap orig = opl.GetElement("Orig").AsSymbolSetMap();
ITupleSet Routes = opl.GetElement("Routes").AsTupleSet();
ISymbolSet Products = opl.GetElement("Products").AsSymbolSet();
Console.Out.Write("Products = ");
for (int j = 0; j <= Products.Size - 1; j++)
{
Console.Out.Write(Products.GetValue(j) + " ");
}
Console.Out.WriteLine();
// Iterate through the orig to see the result of the data element filtering.
IEnumerator it1 = Products.GetEnumerator();
while (it1.MoveNext())
{
string p = ((string)it1.Current);
// This is the last dimension of the array (as it is a one-dimensional array), so you can use the get method directly.
Console.Out.WriteLine("for p = " + p + " we have " + orig.Get(p));
}
Console.Out.WriteLine("---------------------");
// Iterate through the TupleSet.
IEnumerator it2 = Routes.GetEnumerator();
while (it2.MoveNext())
{
ITuple t = ((ITuple)it2.Current);
// Get the string "p" from the tuple.
string p = t.GetStringValue("p");
// if "p" is in the indexer, we will try to add the "o" string to the array.
if (Products.Contains(p))
{
Console.Out.WriteLine("for p = " + p + " we will have " + t.GetStringValue("o") + " from " + t);
}
}
Console.Out.WriteLine("---------------------");
status = 0;
}
catch (ILOG.OPL.OplException ex)
{
Console.WriteLine(ex.Message);
status = 2;
}
catch (ILOG.Concert.Exception ex)
{
Console.WriteLine(ex.Message);
status = 3;
}
catch (System.Exception ex)
{
Console.WriteLine(ex.Message);
status = 4;
}
oplF.End();
return(status);
}
static int Main(string[] args)
{
int status = 127;
const string DATADIR = "../..";
const double RC_EPS = 0.000001;
try
{
OplFactory.DebugMode = true;
OplFactory oplF = new OplFactory();
OplErrorHandler errHandler = oplF.CreateOplErrorHandler();
OplSettings settings = oplF.CreateOplSettings(errHandler);
// Make master model
Cplex masterCplex = oplF.CreateCplex();
masterCplex.SetOut(null);
OplRunConfiguration masterRC0 = oplF.CreateOplRunConfiguration(DATADIR + "/cutstock.mod", DATADIR + "/cutstock.dat");
masterRC0.Cplex = masterCplex;
OplDataElements masterDataElements = masterRC0.OplModel.MakeDataElements();
// prepare sub model source, definition and engine
OplModelSource subSource = oplF.CreateOplModelSource(DATADIR + "/cutstock-sub.mod");
OplModelDefinition subDef = oplF.CreateOplModelDefinition(subSource, settings);
Cplex subCplex = oplF.CreateCplex();
subCplex.SetOut(null);
const int nbItems = 5;
IIntRange items = masterCplex.IntRange(1, 5);
double best;
double curr = double.MaxValue;
do
{
best = curr;
masterCplex.ClearModel();
OplRunConfiguration masterRC = oplF.CreateOplRunConfiguration(masterRC0.OplModel.ModelDefinition, masterDataElements);
masterRC.Cplex = masterCplex;
masterRC.OplModel.Generate();
Console.Out.WriteLine("Solve master.");
if (masterCplex.Solve())
{
curr = masterCplex.ObjValue;
Console.Out.WriteLine("OBJECTIVE: " + curr);
status = 0;
}
else
{
Console.Out.WriteLine("No solution!");
status = 1;
}
// prepare sub model data
OplDataElements subDataElements = oplF.CreateOplDataElements();
subDataElements.AddElement(masterDataElements.GetElement("RollWidth"));
subDataElements.AddElement(masterDataElements.GetElement("Size"));
subDataElements.AddElement(masterDataElements.GetElement("Duals"));
// get reduced costs and set them in sub problem
INumMap duals = subDataElements.GetElement("Duals").AsNumMap();
for (int i = 1; i <= nbItems; i++)
{
IForAllRange forAll = (IForAllRange)masterRC.OplModel.GetElement("ctFill").AsConstraintMap().Get(i);
duals.Set(i, masterCplex.GetDual(forAll));
}
//make sub model
OplModel subOpl = oplF.CreateOplModel(subDef, subCplex);
subOpl.AddDataSource(subDataElements);
subOpl.Generate();
Console.Out.WriteLine("Solve sub.");
if (subCplex.Solve())
{
Console.Out.WriteLine("OBJECTIVE: " + subCplex.ObjValue);
status = 0;
}
else
{
Console.Out.WriteLine("No solution!");
status = 1;
}
if (subCplex.ObjValue > -RC_EPS)
{
break;
}
// Add variable in master model
IIntMap newFill = masterCplex.IntMap(items);
for (int i = 1; i <= nbItems; i++)
{
int coef = (int)subCplex.GetValue(subOpl.GetElement("Use").AsIntVarMap().Get(i));
newFill.Set(i, coef);
}
ITupleBuffer buf = masterDataElements.GetElement("Patterns").AsTupleSet().MakeTupleBuffer(-1);
buf.SetIntValue("id", masterDataElements.GetElement("Patterns").AsTupleSet().Size);
buf.SetIntValue("cost", 1);
buf.SetIntMapValue("fill", newFill);
buf.Commit();
subOpl.End();
masterRC.End();
} while (best != curr && status == 0);
oplF.End();
}
catch (ILOG.OPL.OplException ex)
{
Console.WriteLine(ex.Message);
status = 2;
}
catch (ILOG.Concert.Exception ex)
{
Console.WriteLine(ex.Message);
status = 3;
}
catch (System.Exception ex)
{
Console.WriteLine(ex.Message);
status = 4;
}
Console.WriteLine("--Press <Enter> to exit--");
Console.ReadLine();
return(status);
}