systemFactory.h

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#pragma once
 
// gemc
#include "goptions.h"
#include "gbase.h"
#include "gutilities.h"
 
// gsystem
#include "gsystem_options.h"
 
class GSystemFactory : public GBase<GSystemFactory>
{
public:
    ~GSystemFactory() override = default;
 
    explicit GSystemFactory(const std::shared_ptr<GOptions>& g) : GBase(g, GSFACTORY_LOGGER) {
    }
 
    void loadSystem(GSystem* system) {
        log->info(1, "Loading system <", system->getName(), "> using factory <", system->getFactoryName(), ">");
 
        // Default: allow local execution context to resolve relative paths.
        possibleLocationOfFiles.emplace_back(".");
 
        // GEMC installation root is a common fallback location for resources.
        std::filesystem::path gemcRoot = gutilities::gemc_root();
        possibleLocationOfFiles.push_back(gemcRoot.string());
 
        // Some factories interpret dbhost as a directory hint; others interpret it as a filename.
        possibleLocationOfFiles.push_back(system->get_dbhost());
 
        // Materials first, then geometry.
        loadMaterials(system);
        loadGeometry(system);
    }
 
    virtual void closeSystem() { possibleLocationOfFiles.clear(); }
 
private:
    virtual void loadMaterials(GSystem* system) = 0;
 
    virtual void loadGeometry(GSystem* system) = 0;
 
protected:
    std::vector<std::string> possibleLocationOfFiles;
 
public:
    void addPossibleFileLocation(const std::string& fl) { possibleLocationOfFiles.push_back(fl); }
};