This class provides static method for generating migration header and source files.
You can find more information in comments below.
class CDbMigrationGenerator
{
public:
// Generate migration header and source files
static bool Generate(const String &name, const String &path, const StringArray &namespaces, const bool revert, const bool force_empty); // path should have directory separator at the end
};Usage example:
#include "stdafx.h"
#pragma comment(lib, "Nitisa.lib")
#pragma comment(lib, "Platform.lib")
#pragma comment(lib, "opengl32.lib")
#pragma comment(lib, "cryptlib.lib")
using nitisa::CDbMigrationGenerator;
using nitisa::AnsiToString;
using nitisa::AnsiString;
using nitisa::String;
using nitisa::StringArray;
// To generate migration files call the program with arguments "create migration migration_name --revert --empty" where "--revert" and "--empty" are optional and "migration_name" is the name for your migration (for example "create_table_users")
int main(int argc, char *argv[])
{
// Check if needed command line arguments are present
if (argc >= 4 && AnsiString{ argv[1] } == "create" && AnsiString{ argv[2] } == "migration")
{
const String name{ AnsiToString(argv[3]) }; // Name of the migration
const String path{ L"C:/Projects/MyApp/Migrations/" }; // Path where to store generated files
const StringArray namespaces{ L"nitisa", L"app", L"migrations" }; // Namespace hierarchy
const bool revert{ (argc > 4 && AnsiString{ argv[4] } == "--revert") || (argc > 5 && AnsiString{ argv[5] } == "--revert") }; // Whether the Revert() method should be generated in migration files
const bool force_empty{ (argc > 4 && AnsiString{ argv[4] } == "--empty") || (argc > 5 && AnsiString{ argv[5] } == "--empty") }; // Whether migration Run() and Revert() methods should be empty (with no default staff which may be generated depending on migration name)
std::wcout << L"Generating " << name << L"...";
if (CDbMigrationGenerator::Generate(name, path, namespaces, revert, force_empty)) // Generate migration files
std::wcout << L"OK" << std::endl;
else
std::wcout << L"FAILED" << std::endl;
std::system("pause");
return 0;
}
// ...
return 0;
}| Namespace: | nitisa |
| Include: | Nitisa/Db/DbMigrationGenerator.h |