public string[] Generate(string databaseName)
{
var newMigrations = GetMigrationHistory(databaseName);
var ahead = _migrationHistory.Subtract(newMigrations);
if (ahead.Any)
{
throw new InvalidOperationException(
"The target database is ahead of the desired migration. You can force a rollback, which may destroy data.");
}
var difference = newMigrations.Subtract(_migrationHistory);
var generator = new ForwardGenerator(databaseName, difference);
while (generator.Any)
{
generator.AddMigration(generator.Head);
}
return(generator.Sql.ToArray());
}
