/// <summary>
/// Scans the assembly for all migrations that can be applied to the
/// given context, and adds them to the builder.
/// </summary>
/// <typeparam name="TContext">The context type</typeparam>
/// <param name="builder">The builder to use</param>
/// <param name="assembly">The assembly to scan</param>
/// <returns>The builder instance</returns>
/// <exception cref="ArgumentNullException"></exception>
public static MigrationsBuilder <TContext> AddMigrationsFrom <TContext>(
this MigrationsBuilder <TContext> builder, Assembly assembly)
where TContext : IMigrationContext
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
if (assembly == null)
{
throw new ArgumentNullException(nameof(assembly));
}
var migrationBaseType = typeof(IMigration <TContext>).GetTypeInfo();
var migrations = assembly.GetExportedTypes()
.Where(e =>
{
var t = e.GetTypeInfo();
return(t.IsClass && !t.IsAbstract && migrationBaseType.IsAssignableFrom(t));
});
foreach (var migration in migrations)
{
builder.AddMigration(migration);
}
return(builder);
}
/// <summary>
/// Configures this context to be used for relational databases
/// </summary>
/// <typeparam name="TContext">The context type</typeparam>
/// <param name="builder">The migrations builder</param>
/// <param name="connectionString">The connection string to be used</param>
/// <param name="config">The configuration handler</param>
/// <returns></returns>
public static MigrationsBuilder <TContext> AddRelational <TContext>(
this MigrationsBuilder <TContext> builder, string connectionString, Action <RelationalMigrationsBuilder <TContext> > config)
where TContext : IRelationalMigrationContext
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
if (connectionString == null)
{
throw new ArgumentNullException(nameof(connectionString));
}
if (config == null)
{
throw new ArgumentNullException(nameof(config));
}
if (string.IsNullOrWhiteSpace(connectionString))
{
throw new ArgumentException("Value cannot be whitespace.", nameof(connectionString));
}
var relationalBuilder = new RelationalMigrationsBuilder <TContext>(builder.ServiceCollection, connectionString);
config(relationalBuilder);
foreach (var migrationType in relationalBuilder.Migrations)
{
builder.AddMigration(migrationType);
}
return(builder);
}
