read_parameters.C

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{
    FairRuntimeDb* rtdb = FairRuntimeDb::instance();

    Bool_t kParameterMerged = kTRUE;
    FairParRootFileIo* parOut = new FairParRootFileIo(kParameterMerged);
    parOut->open("mq_ex_params.root");
    rtdb->setFirstInput(parOut);
    // rtdb->saveOutput();
    // rtdb->print();

    FairMQExParamsParOne* par = static_cast<FairMQExParamsParOne*>(rtdb->getContainer("FairMQExParamsParOne"));

    for (Int_t i = 0; i < 100; i++) {
        rtdb->initContainers(2000 + i);

        par->print();
    }
}