/////////////////////////////////////////////////////////////////////
// TestFactory.cpp - Demonstrates basic functionality of           //
//                   Loki::Factory                                 //
//                                                                 //
// Loki is a template-based library developed by the author of:    //
// Modern C++ Design, Andrei Alexandrescu, Addison-Wesley, 2001    //
//                                                                 //
// Jim Fawcett, CSE687 - Object Oriented Design, Spring 2004       //
/////////////////////////////////////////////////////////////////////
// Required Files:                                                 //
//   TestFactory.cpp, Factory.h, Singleton.h, Singleton.cpp,       //
//   SmallObj.h, SmallObj.cpp, static_check.h, Threads.h,          //
//   TypeManip.h, TypeList.h, NullType, LokiTypeInfo.h,            //
//   AssocVector.h                                                 //
/////////////////////////////////////////////////////////////////////
//
//    template
//    <
//        class AbstractProduct, 
//        typename IdentifierType,
//        typename ProductCreator = AbstractProduct* (*)(),
//        template<typename, class>
//            class FactoryErrorPolicy = DefaultFactoryError
//    >
//    class Factory 
//        : public FactoryErrorPolicy<IdentifierType, AbstractProduct>
//

#include "Factory.h"
#include <string>
#include <iostream>
using namespace Loki;

/////////////////////////////////////////////////////////////////////
// Product Interface and Product classes - created by factory

struct IProduct
{
  virtual ~IProduct() {}
  virtual void say()=0;
};

class ProductA : public IProduct
{
public:
  static IProduct* Create() { return new ProductA(); }
  static std::string ID() { return "ProductA"; }
  void say() { std::cout << "\n  " << ID(); }
};

class ProductB : public IProduct
{
public:
  static IProduct* Create() { return new ProductB(); }
  static std::string ID() { return "ProductB"; }
  void say() { std::cout << "\n  " << ID(); }
};

//
/////////////////////////////////////////////////////////////////////
// Demonstration

void main()
{
  std::cout << "\n  Testing Factory<IdentifierType,ProductCreator> "
            << "\n ================================================\n";

  Factory<IProduct,std::string> factory;
  factory.Register(ProductA::ID(),ProductA::Create);
  factory.Register(ProductB::ID(),ProductB::Create);

  IProduct* pProd = factory.CreateObject(ProductA::ID());
  pProd->say();
  delete pProd;
  pProd = factory.CreateObject(ProductB::ID());
  pProd->say();
  delete pProd;

  std::cout << "\n\n";
}