static_and_dynamic_example.cc

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#include "gfactory.h"
#include "gfactory_options.h"
#include "ShapeFactory.h"
#include "Car.h"
 
// managerA: loads known classes Triangle and Box from the base Shape, in ShapeFactory.h
// managerB: loads DLL that instantiate derived factories - we only know of the base class, in this case "Car"
 
int main(int argc, char *argv[]) {
 
    auto gopts = new GOptions(argc, argv, gfactory::defineOptions());
 
    auto log = std::make_shared<GLogger>(gopts, PLUGIN_LOGGER);
 
    GManager managerAV(log, "exampleAV");    // no verbosity
    managerAV.RegisterObjectFactory<Triangle>("triangle");
    managerAV.RegisterObjectFactory<Box>("box1");
    managerAV.RegisterObjectFactory<Box>("box2");
 
    // putting A factory in map
    // notice we're putting the base class in the map so we can call its virtual methods
    map<string, Shape *> fffv;
    fffv["triangle"] = managerAV.CreateObject<Shape>("triangle");
    fffv["box1"] = managerAV.CreateObject<Shape>("box1");
    fffv["box2"] = managerAV.CreateObject<Shape>("box2");
 
    // aShape is same pointer as map element
    Shape *aShape = fffv["triangle"];
 
    // calling base and derived methods
    aShape->Area();
    fffv["triangle"]->Area();
    fffv["box1"]->Area();
 
    log->info(0, " Shape pointers from map: ", fffv["triangle"], ", from direct pointer:", aShape);
 
    // once we're done with it
    managerAV.clearDLMap();
 
 
    // B manages Cars. Notice, we do not need the derived class headers here!
    // PRAGMA: These two names must match in registerDL and in LoadAndRegisterObjectFromLibrary:
    // that's ok but need to spit error if that doesn't happen
    GManager managerB(log, "exampleB");
 
    map<string, Car *> ggg;
    ggg["tesla"] = managerB.LoadAndRegisterObjectFromLibrary<Car>("test_dyn_factory1");
    ggg["ford"] = managerB.LoadAndRegisterObjectFromLibrary<Car>("test_dyn_factory2");
    Car *aCar = ggg["ford"];
 
 
    // calling base and derived method
    ggg["tesla"]->go();
    ggg["ford"]->go();
 
    log->info(0, " Car pointers from map: ", ggg["ford"], ", from direct pointer:", aCar);
    log->info(0, " run generalCarVar method from factory map: ", ggg["tesla"]->generalCarVar);
 
    // clearing the map - this should be done in classes destructors
    managerB.clearDLMap();
 
}