.NET ORM框架（一）
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最近做项目自己整理了一个ORM框架，分享给大家看看，有很多不足望大家指出。
下面是使用方法
BLL 主要方法
public class TestBLL : ManagerBLL { public static TestBLL __instance = null; public static TestBLL GetInstance() { if (__instance == null) __instance = new TestBLL(); return __instance; } public void test() { Admin_User admin=new Admin_User(); admin.User_Name=""; admin.User_NikeName=""; //条件 WhereClip<Admin_User> where = new WhereClip<Admin_User>(a => a.User_Name=="x" && a.User_ID == 1 || a.User_RegIP=="dd"); where.And(a=>a.User_Status==1); where.Or(a=>a.User_TrueName==""); //模糊条件 where.And(a=>a.User_Password.Like(String.Format("%{0}%",1))); //列名 ColumnsClip<Admin_User> columnsClip=new ColumnsClip<Admin_User>(a=>a.Columns(a.User_ID,a.User_LastIP,a.User_LoginNumber)); //排序 OrderByClip<Admin_User> orderByClip=new OrderByClip<Admin_User>(a=>a.OrderBy(a.User_ID.Desc(),a.User_LastIP.Asc())); //查询第一行第一列 base.GetCount(where); //查询一行 base.Get(columnsClip, where, orderByClip); //查询成List base.GetList(0, columnsClip, where, orderByClip); //分页查询 base.GetList(columnsClip, where, orderByClip, 10, 1, 0); //添加 base.Add(admin); //批量添加-事物 List<BaseEntity> list = new List<BaseEntity>(); Admin_User admins = (Admin_User)admin.Clone();//深度复制 list.Add(admin); list.Add(admins); base.AddList(list); //修改 base.Edit(admin, where); //批量修改-事物 Dictionary<BaseEntity, object> dic = new Dictionary<BaseEntity, object>(); dic.Add(admin, where); dic.Add(admins, where); base.EditList(dic); //删除 base.Remove(admin); //批量删除-事物 base.RemoveList(dic); } }子类继承父类， 直接用BASE调用 ManagerBLL 中的方法。codesmith自动生成实体
/// <summary> /// Modal class: Admin_User. /// </summary> [Serializable] [Table(Name = "Admin_User", PrimaryKey = "user_ID")] public class Admin_User : BaseEntity { #region Private Properties private int? user_ID;//ID private string user_Name;//用户名 private string user_Password;//密码 private string user_NikeName;//用户昵称 private string user_TrueName;//用户真实姓名 private string user_Email;//Email private string user_RegIP;//注册IP private DateTime? user_CreateTime;//注册时间 private int? user_LoginNumber;//登录次数 private DateTime? user_LastTime;//最后登录时间 private string user_LastIP;//最后登录IP private int? user_Status;//状态 #endregion #region Public Properties /// <summary> /// ID. /// </summary> [Column(Name = "user_ID", PrimaryKey = true, Strategy = GenerationType.INDENTITY)] public int? User_ID { get { return user_ID; } set { user_ID = value; } } /// <summary> /// 用户名. /// </summary> [Column(Name = "user_Name")] public string User_Name { get { return user_Name; } set { user_Name = value.SubStr(50); } } /// <summary> /// 密码. /// </summary> [Column(Name = "user_Password")] public string User_Password { get { return user_Password; } set { user_Password = value.SubStr(50); } } /// <summary> /// 用户昵称. /// </summary> [Column(Name = "user_NikeName")] public string User_NikeName { get { return user_NikeName; } set { user_NikeName = value.SubStr(50); } } /// <summary> /// 用户真实姓名. /// </summary> [Column(Name = "user_TrueName")] public string User_TrueName { get { return user_TrueName; } set { user_TrueName = value.SubStr(50); } } /// <summary> /// Email. /// </summary> [Column(Name = "user_Email")] public string User_Email { get { return user_Email; } set { user_Email = value.SubStr(50); } } /// <summary> /// 注册IP. /// </summary> [Column(Name = "user_RegIP")] public string User_RegIP { get { return user_RegIP; } set { user_RegIP = value.SubStr(50); } } /// <summary> /// 注册时间. /// </summary> [Column(Name = "user_CreateTime")] public DateTime? User_CreateTime { get { return user_CreateTime; } set { user_CreateTime = value; } } /// <summary> /// 登录次数. /// </summary> [Column(Name = "user_LoginNumber")] public int? User_LoginNumber { get { return user_LoginNumber; } set { user_LoginNumber = value; } } /// <summary> /// 最后登录时间. /// </summary> [Column(Name = "user_LastTime")] public DateTime? User_LastTime { get { return user_LastTime; } set { user_LastTime = value; } } /// <summary> /// 最后登录IP. /// </summary> [Column(Name = "user_LastIP")] public string User_LastIP { get { return user_LastIP; } set { user_LastIP = value.SubStr(50); } } /// <summary> /// 状态. /// </summary> [Column(Name = "user_Status")] public int? User_Status { get { return user_Status; } set { user_Status = value; } } #endregion }codesmith 脚本写好既可以自动生成实体，非常方便快捷。
EntityManager 接口
public interface EntityManager { T Get<T>(WhereClip<T> whereClip) where T : BaseEntity, new(); T Get<T>(ColumnsClip<T> columnsClip, WhereClip<T> whereClip, OrderByClip<T> orderByClip) where T : BaseEntity, new(); List<T> GetList<T>(int top, ColumnsClip<T> columnsClip, WhereClip<T> whereClip, OrderByClip<T> orderByClip) where T : BaseEntity, new(); int GetCount<T>(WhereClip<T> whereClip) where T : BaseEntity, new(); //分页查询 ConditionResult<T> GetList<T>(ColumnsClip<T> columnsClip, WhereClip<T> whereClip, OrderByClip<T> orderByClip, int nPageSize, int nPageIndex, int nTotalCount) where T : BaseEntity, new(); //新增 int Add<T>(T entity); //批量新增，采用事务 bool AddList<T>(List<T> entityList); //修改 int Edit<T>(T entity); //多条件修改 int Edit<T>(T entity, WhereClip<T> whereClip) where T : BaseEntity, new(); //批量修改，采用事物 bool EditList<T>(Dictionary<T, object> dicList) where T : BaseEntity, new(); //删除 int Remove<T>(T entity); //根据ID删除数据 int Remove<T>(WhereClip<T> whereClip) where T : BaseEntity, new(); //批量删除，采用事物 bool RemoveList<T>(Dictionary<T, object> dicList) where T : BaseEntity, new(); } /// <summary> /// 获取一行数据 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="whereClip"></param> /// <returns></returns> /// public T Get<T>(WhereClip<T> whereClip) where T : BaseEntity, new() { //说明 性能问题还尚未考虑。 T _T = new T(); PropertyInfo[] properties = ReflectionUtils.GetProperties(_T.GetType()); string whereString = string.Empty; if (whereClip != null) whereString = whereClip.WhereString; TableInfo tableInfo = DbEntityUtils.GetTableInfo(_T, DbOperateType.SELECT); string commandText = BuildSql.GetFristSql(0, tableInfo, whereString, string.Empty); IDataReader sdr = null; if (whereClip != null) { DbParameter[] parms = SqlOpera.MakeInParams(whereClip.Table); sdr = SqlOpera.ExecuteReader(CommandType.Text, commandText, parms); } else sdr = SqlOpera.ExecuteReader(CommandType.Text, commandText); while (sdr.Read()) { foreach (PropertyInfo property in properties) { //通过实体类属性名称获取Column自定义属性配置的映射列名 string name = tableInfo.PropToColumn[property.Name].ToString(); //通过获取的列名从dataReader中检索值，并赋给实体对象属性 ReflectionUtils.SetPropertyValue(_T, property, sdr[name]); } break; } sdr.Close(); return _T; } /// <summary> /// 获取一行数据 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="columnsClip"></param> /// <param name="whereClip"></param> /// <param name="orderByClip"></param> /// <returns></returns> public T Get<T>(ColumnsClip<T> columnsClip, WhereClip<T> whereClip, OrderByClip<T> orderByClip) where T : BaseEntity, new() { //说明 性能问题还尚未考虑。 T _T = new T(); string orderByWhere = string.Empty; string columnsWhere = string.Empty; string whereString = string.Empty; PropertyInfo[] properties = ReflectionUtils.GetProperties(_T.GetType()); if (orderByClip != null) orderByWhere = orderByClip.OrderByWhere; if (columnsClip != null) columnsWhere = columnsClip.ColumnsWhere; if (whereClip != null) whereString = whereClip.WhereString; TableInfo tableInfo = null; if (columnsClip == null) tableInfo = DbEntityUtils.GetTableInfo(_T, DbOperateType.SELECT); string tableName = DbEntityUtils.GetTableName(_T.GetType());//获取表名 string commandText = null; if (columnsClip != null) commandText = BuildSql.GetFristSqlByWhere(tableName, columnsWhere, whereString, orderByWhere); else commandText = BuildSql.GetFristSql(0, tableInfo, whereString, orderByWhere); IDataReader sdr = null; if (whereClip != null) { DbParameter[] parms = SqlOpera.MakeInParams(whereClip.Table); sdr = SqlOpera.ExecuteReader(CommandType.Text, commandText, parms); } else { sdr = SqlOpera.ExecuteReader(CommandType.Text, commandText); } while (sdr.Read()) { foreach (PropertyInfo property in properties) { //通过实体类属性名称获取Column自定义属性配置的映射列名 string name = DbEntityUtils.GetColumnAttributeName(property); //通过获取的列名从dataReader中检索值，并赋给实体对象属性 for (int i = 0; i < sdr.FieldCount; i++) { if (sdr.GetName(i) == name) { ReflectionUtils.SetPropertyValue(_T, property, sdr[name]); break; } } } break; } sdr.Close(); return _T; } /// <summary> /// 获取List集合 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="top"></param> /// <param name="columnsClip"></param> /// <param name="whereClip"></param> /// <param name="orderByClip"></param> /// <returns></returns> public List<T> GetList<T>(int top, ColumnsClip<T> columnsClip, WhereClip<T> whereClip, OrderByClip<T> orderByClip) where T : BaseEntity, new() { //说明 性能问题还尚未考虑。 T _T = new T(); List<T> listT = new List<T>(); string orderByWhere = string.Empty; string columnsWhere = string.Empty; string whereString = string.Empty; PropertyInfo[] properties = ReflectionUtils.GetProperties(_T.GetType()); if (orderByClip != null) orderByWhere = orderByClip.OrderByWhere; if (columnsClip != null) columnsWhere = columnsClip.ColumnsWhere; if (whereClip != null) whereString = whereClip.WhereString; string commandText = null; DataSet ds = null; if (columnsClip != null) { string tableName = DbEntityUtils.GetTableName(_T.GetType());//获取表名 commandText = BuildSql.GetListSql(top, tableName, columnsWhere, whereString, orderByWhere); } else { TableInfo tableInfo = DbEntityUtils.GetTableInfo(_T, DbOperateType.SELECT); commandText = BuildSql.GetFristSql(top, tableInfo, whereString, orderByWhere); } if (whereClip != null) { DbParameter[] parms = SqlOpera.MakeInParams(whereClip.Table); ds = SqlOpera.ExecuteDataset(CommandType.Text, commandText, parms); } else { ds = SqlOpera.ExecuteDataset(CommandType.Text, commandText); } if (ds.Tables.Count == 0) return listT; foreach (DataRow dr in ds.Tables[0].Rows) { T entityT = new T(); foreach (PropertyInfo property in properties) { //通过实体类属性名称获取Column自定义属性配置的映射列名 string name = DbEntityUtils.GetColumnAttributeName(property); //通过获取的列名从datatable中检索值，并赋给实体对象属性 if (dr.Table.Columns.Contains(name)) ReflectionUtils.SetPropertyValue(entityT, property, dr[name]); } listT.Add(entityT); } return listT; } /// <summary> /// 分页 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="columnsClip"></param> /// <param name="whereClip"></param> /// <param name="orderByClip"></param> /// <param name="nPageSize"></param> /// <param name="nPageIndex"></param> /// <param name="nTotalCount"></param> /// <returns></returns> public ConditionResult<T> GetList<T>(ColumnsClip<T> columnsClip, WhereClip<T> whereClip, OrderByClip<T> orderByClip, int nPageSize, int nPageIndex, int nTotalCount) where T : BaseEntity, new() { T _T = new T(); List<T> listT = new List<T>(); ConditionResult<T> conditionResult = new ConditionResult<T>(); string orderByWhere = string.Empty; string columnsWhere = string.Empty; string whereString = string.Empty; int totalCount = 0; PropertyInfo[] properties = ReflectionUtils.GetProperties(_T.GetType()); if (orderByClip != null) orderByWhere = orderByClip.OrderByWhere; if (columnsClip != null) columnsWhere = columnsClip.ColumnsWhere; if (whereClip != null) whereString = whereClip.WhereString; totalCount = GetCount(whereClip); string commandText = null; DataSet ds = null; TableInfo tableInfo = DbEntityUtils.GetTableInfo(_T, DbOperateType.SELECT); string tableName = DbEntityUtils.GetTableName(_T.GetType());//获取表名 commandText = BuildSql.GetPageSql(tableName, columnsWhere, whereString, orderByWhere, nPageSize, nPageIndex, tableInfo); if (whereClip != null) { DbParameter[] parms = SqlOpera.MakeInParams(whereClip.Table); ds = SqlOpera.ExecuteDataset(CommandType.Text, commandText, parms); } else { ds = SqlOpera.ExecuteDataset(CommandType.Text, commandText); } if (ds.Tables.Count == 0) return conditionResult; foreach (DataRow dr in ds.Tables[0].Rows) { T entityT = new T(); foreach (PropertyInfo property in properties) { //通过实体类属性名称获取Column自定义属性配置的映射列名 string name = DbEntityUtils.GetColumnAttributeName(property); //通过获取的列名从datatable中检索值，并赋给实体对象属性 if (dr.Table.Columns.Contains(name)) ReflectionUtils.SetPropertyValue(entityT, property, dr[name]); } listT.Add(entityT); } conditionResult.ResultList = listT; conditionResult.PageSize = nPageSize; conditionResult.TotalCount = totalCount; conditionResult.TotalPage = (int)Math.Ceiling((double)totalCount / nPageSize); conditionResult.PageIndex = nPageIndex; return conditionResult; } /// <summary> /// 获取第一行第一列 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="whereClip"></param> /// <returns></returns> public int GetCount<T>(WhereClip<T> whereClip) where T : BaseEntity, new() { Type type = new T().GetType(); string whereString = string.Empty; if (whereClip != null) whereString = whereClip.WhereString; string tableName = DbEntityUtils.GetTableName(type);//获取表名 string commandText = BuildSql.GetCountSql(tableName, whereString); ////执行SQL命令 object val = null; if (whereClip != null) { DbParameter[] parms = SqlOpera.MakeInParams(whereClip.Table); val = SqlOpera.ExecuteScalar(CommandType.Text, commandText, parms); } else val = SqlOpera.ExecuteScalar(CommandType.Text, commandText); //返回所影响的行数 return Utils.StrToInt(val, 0); }ManagerBLL 必须实现 EntityManager 接口，部分代码还未贴。
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整理中。。。。。
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