As with any local search in Scheduler implementation, it is necessary to construct an IloSchedulerSolution object that will be the central data structure in the local search protocol.

In this case, we create the IloSchedulerSolution as we did in the previous chapter with one exception. In the code above that calculates and stores the previous resource constraints, the main loop iterates over the resources that are stored in the solution. It is necessary, therefore, to actually add the resources to the solution.

In summary, we create the local search solution by cloning the existing solution, adding the resource constraints and specifying that they are to restore their next resource constraints, and by adding the resources.

IloSchedulerSolution CreateLSSolution(IloEnv env, 
                                      IloSchedulerSolution globalSolution) {


  /* CREATE LOCAL SEARCH SOLUTION */
  IloSchedulerSolution lsSolution = globalSolution.makeClone(env);

  for (IloIterator <IloResourceConstraint> iter(env); iter.ok(); ++iter) 
    lsSolution.add(*iter, IloRestoreRCNext);

  for (IloIterator <IloResource> resIter(env); resIter.ok(); ++resIter)
    lsSolution.add(*resIter);

  return lsSolution;
}