int changeCbcSolver (CoinParam *param)
{
assert (param != 0) ;
CbcGenParam *genParam = dynamic_cast<CbcGenParam *>(param) ;
assert (genParam != 0) ;
CbcGenCtlBlk *ctlBlk = genParam->obj() ;
assert (ctlBlk != 0) ;
CoinMessageHandler *msghandler = ctlBlk->messageHandler() ;
/*
Setup to return nonfatal/fatal error (1/-1) by default.
*/
int retval ;
if (CoinParamUtils::isInteractive()) {
retval = 1 ;
} else {
retval = -1 ;
}
/*
Try to locate the solver specified by the user.
*/
const std::string solverName = genParam->kwdVal() ;
OsiSolverInterface *protoOsi = solvers[solverName] ;
if (protoOsi == 0) {
std::cerr
<< "Can't find solver \"" << solverName
<< "\" in the solvers vector." << std::endl ;
return (retval) ;
}
ctlBlk->dfltSolver_ = protoOsi ;
/*
We have a solver.
*/
ctlBlk->message(CBCGEN_NEW_SOLVER)
<< solverName << CoinMessageEol ;
CbcModel *model = ctlBlk->model_ ;
assert (model != 0) ;
OsiSolverInterface *newOsi = protoOsi->clone() ;
model->assignSolver(newOsi) ;
return (0) ;
}
