backend_registry.h File Reference

Registry for database backend plugins. More...

#include "database_backend.h"
#include <string>
#include <memory>
#include <vector>
#include <map>
#include <functional>
#include <mutex>

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Classes
class	database::core::backend_registry
	Singleton registry for database backend plugins. More...
class	database::core::backend_registrar< BackendType >
	Helper class for automatic backend registration. More...

Namespaces
namespace	database
namespace	database::core

Functions
std::unique_ptr< database_backend >	database::core::create_backend (const std::string &name)
	Convenience function for creating backends (static method style)
bool	database::core::has_backend (const std::string &name)
	Convenience function for checking backend availability.
std::vector< std::string >	database::core::available_backends ()
	Convenience function for getting available backends.

Detailed Description

Registry for database backend plugins.

Provides a centralized registry for registering and creating database backends at runtime. This eliminates the need for conditional compilation and enables dynamic backend selection.

Key Features:

• Runtime backend registration
• Thread-safe factory pattern
• Automatic backend discovery via static initialization
• Support for both built-in and external backends

Usage Pattern:

1. Register backends (typically via static initialization):

   backend_registry::register_backend("postgresql", &postgresql_backend::create);

2. Create backend instances:

   auto backend = backend_registry::create("postgresql");
   if (!backend) {
       // Handle error: backend not found
   }

3. Query available backends:

   auto backends = backend_registry::available_backends();
   for (const auto& name : backends) {
       std::cout << "Available: " << name << std::endl;
   }

Definition in file backend_registry.h.