Originally posted by: vplus

Hi,
I am a newbie, sorry if this question seems to be too easy for you.
I am writing a model with column generation. In the main function, I put something like (which is very standard):

function printSolution(){
}    
 
minimize ...;
 
main {
    ...
    thisOplModel.generate();
    var Data = thisOplModel.dataElements;
    var masterDef = thisOplModel.modelDefinition;
    var masterCplex = cplex;
 
    while (true) {
        var masterOpl = new IloOplModel(masterDef, masterCplex);
        masterOpl.addDataSource(Data);
        masterOpl.generate();
        // blah blah blah
 
        // If found a solution, then print it
        printSolution();
    }
}

Which puzzles me is that , the function

printSolution()

should need an input - this case would be masterOpl - to print the result correctly. However, without the input, it still works. Maybe it's because main function is in the master.mod file, but it's not very clear since the object masterOpl is created several times italics inside italics the

main

.

Thanks.
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

Within OPL scripts, the IloOplModel object has an inbuilt function called 'printSolution()' that prints the current values of the decision variables in the model.

You seem to be overriding this function call in your code which may be the cause for the behavior. If you were to change your function name from :

function printSolution(){
}

to

function printOPLSolution(){
}

then I would think that this call would definitely require an IloOplModel instance for its invocation and not work if you were to call it without one.
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: vplus

Thank AbhishekRaman.
I changed the name of the function, and it still works.
#DecisionOptimization
#OPLusingCPLEXOptimizer