Class BaseCommandHandler<TCommand, TResult>Abstract

Example

class CreateProductHandler extends BaseCommandHandler<CreateProductCommand, Product> {
  constructor(private repository: IProductRepository) {
    super();
  }

  protected validate(command: CreateProductCommand): Result<void, DomainError> {
    if (!command.name) {
      return Failure.create(new DomainError('INVALID_NAME', 'Name is required'));
    }
    return Success.create(undefined);
  }

  protected async execute(command: CreateProductCommand): Promise<Result<Product, DomainError>> {
    const product = Product.create(command.name, command.price);
    await this.repository.save(product);
    return Success.create(product);
  }
}
Copy