Dapper基础知识二

Posted 2021-01-23 Ssummer520

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在下刚毕业工作，之前实习有用到Dapper？这几天新项目想用上Dapper，在下比较菜鸟，这块只是个人对Dapper的一种总结。

2，如何使用Dapper?

首先Dapper是支持多种数据库的，当时在学习的时候参考蓝老师的资料https://www.cnblogs.com/lanxiaoke/p/6503022.html。

Dapper支持多数据库的工厂类,设计模式的工厂模式，Skr· Skr~。

 public interface IRepository<T> where T : class
    {
        void Add(T entity);
        void AddBatch(IEnumerable<T> entitys);
        void Update(T entity);
        void Delete(T entity);
        void Delete(string Id);
        void Delete(int Id);
        void Delete(Guid Id);
        T Get(string Id);
        T Get(Guid Id);
        T Get(int Id);
        T Get(T entity);
        T Get(Expression<Func<T, bool>> func);
        IEnumerable<T> GetAll();
        IEnumerable<T> GetList(Expression<Func<T, bool>> where = null, Expression<Func<T, bool>> order = null);
        Tuple<int, IEnumerable<T>> GetPage(Page page, Expression<Func<T, bool>> where = null, Expression<Func<T, bool>> order = null);
        long Count(Expression<Func<T, bool>> where = null);
    }

  public class IDapperRepository<T> :IRepository<T> where T:class
    {
        protected IDbConnection Conn { get; private set; }
        public IDapperRepository()
        {
            Conn = DbConnectionFactory.CreateDbConnection();
        }
        public void SetDbConnection(IDbConnection conn)
        {
            Conn = conn;
        } 
        

        public void Add(T entity)
        {
            
            Conn.Insert<T>(entity);
        }

        public void AddBatch(IEnumerable<T> entitys)
        {
            foreach (T entity in entitys)
            {
                Add(entity);
            }
        }

        public void Update(T entity)
        {
            Conn.Update(entity);
        }

        public void Delete(T entity)
        {
            Conn.Delete(entity);
        }

        public void Delete(string Id)
        {
            var entity = Get(Id);
            if (entity == null)
                return;
            Delete(entity);
        }

        public void Delete(int Id)
        {
            var entity = Get(Id);
            if (entity == null) return;

            Delete(entity);
        }

        public void Delete(Guid Id)
        {
            var entity = Get(Id);
            if (entity == null) return;

            Delete(entity);
        }

        public T Get(T entity)
        {
            return Conn.Get<T>(entity);
        }

        public T Get(Guid Id)
        {
            return Conn.Get<T>(Id);
        }

        public T Get(string Id)
        {
            return Conn.Get<T>(Id);
        }

        public T Get(int Id)
        {
            return Conn.Get<T>(Id);
        }

        public T Get(Expression<Func<T, bool>> func)
        {
            throw new NotImplementedException();
        }

        public IEnumerable<T> GetAll()
        {
            throw new NotImplementedException();
        }

        public IEnumerable<T> GetList(Expression<Func<T, bool>> where = null, Expression<Func<T, bool>> order = null)
        {
            throw new NotImplementedException();
        }

        public Tuple<int, IEnumerable<T>> GetPage(Page page, Expression<Func<T, bool>> where = null, Expression<Func<T, bool>> order = null)
        {
            throw new NotImplementedException();
        }

        public long Count(Expression<Func<T, bool>> where = null)
        {
            throw new NotImplementedException();
        }
    }