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将类拆分为子类

refactoring class c#

Nick · 技术社区 · 17 年前

BLL.Database MyDB = new BLL.Database();
BLL.Entity.User MyUser = Database.UserGetById(42);

BLL.Database MyDB = new BLL.Database();
BLL.Entity.User MyUser = Database.User.GetById(42);

namespace BLL
{
    public partial class Database
    {
        // private members..
        // constructor

        #region User
        public IQueryable<BLL.Entity.User> UserGetAll()
        {
            // ...
        }

        public BLL.Entity.User UserGetById(int UserId)
        {
            // ...
        }

        public void UserSave(ref BLL.Entity.User user)
        {
            // ...
        }

        public void UserDelete(int userId)
        {
            // ...
        }
        #endregion

        // More sets of methods for other entities in database here..
    }
}

namespace BLL
{
    public partial class Database
    {
        private _User;
        public User
        {
            if (_User == null)
            {
                _User = new User();
            }
            return _User;
        }

        // Other data access classes here..
    }

    public partial class User
    {
        public IQueryable<BLL.Entity.User> GetAll()
        {
            // ...
        }

        // GetById, Save & Delete methods here..
    }
}