業務層和數據層父類及接口-T4模板
在上一篇中，我們已經把項目的基本框架搭起來了，這一篇我們就來實現業務層和數據層的父接口及父類。
1、我們先來定義一個業務層父接口IBaseBLL.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;
namespace IBLL
{
/// <summary>
/// 業務父 接口
/// </summary>
/// <typeparam name="T"></typeparam>
public interface IBaseBLL<T> where T:class,new()
{
//定義 增刪改查 方法
#region 1.0 新增 實體 +int Add(T model)
/// <summary>
/// 新增 實體
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
int Add(T model);
#endregion
#region 2.0 根據 id 刪除 +int Del(T model)
/// <summary>
/// 根據 id 刪除
/// </summary>
/// <param name="model">包含要刪除id的對象</param>
/// <returns></returns>
int Del(T model);
#endregion
#region 3.0 根據條件刪除 +int DelBy(Expression<Func<T, bool>> delWhere)
/// <summary>
/// 3.0 根據條件刪除
/// </summary>
/// <param name="delWhere"></param>
/// <returns></returns>
int DelBy(Expression<Func<T, bool>> delWhere);
#endregion
#region 4.0 修改 +int Modify(T model, params string[] proNames)
/// <summary>
/// 4.0 修改，如：
/// T u = new T() { uId = 1, uLoginName = "asdfasdf" };
/// this.Modify(u, "uLoginName");
/// </summary>
/// <param name="model">要修改的實體對象</param>
/// <param name="proNames">要修改的 屬性 名稱</param>
/// <returns></returns>
int Modify(T model, params string[] proNames);
#endregion
#region 4.0 批量修改 +int Modify(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames)
/// <summary>
/// 4.0 批量修改
/// </summary>
/// <param name="model">要修改的實體對象</param>
/// <param name="whereLambda">查詢條件</param>
/// <param name="proNames">要修改的 屬性 名稱</param>
/// <returns></returns>
int ModifyBy(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames);
#endregion
#region 5.0 根據條件查詢 +List<T> GetListBy(Expression<Func<T,bool>> whereLambda)
/// <summary>
/// 5.0 根據條件查詢 +List<T> GetListBy(Expression<Func<T,bool>> whereLambda)
/// </summary>
/// <param name="whereLambda"></param>
/// <returns></returns>
List<T> GetListBy(Expression<Func<T, bool>> whereLambda);
#endregion
#region 5.1 根據條件 排序 和查詢 + List<T> GetListBy<TKey>
/// <summary>
/// 5.1 根據條件 排序 和查詢
/// </summary>
/// <typeparam name="TKey">排序字段類型</typeparam>
/// <param name="whereLambda">查詢條件 lambda表達式</param>
/// <param name="orderLambda">排序條件 lambda表達式</param>
/// <returns></returns>
List<T> GetListBy<TKey>(Expression<Func<T, bool>> whereLambda, Expression<Func<T, TKey>> orderLambda);
#endregion
#region 6.0 分頁查詢 + List<T> GetPagedList<TKey>
/// <summary>
/// 6.0 分頁查詢 + List<T> GetPagedList<TKey>
/// </summary>
/// <param name="pageIndex">頁碼</param>
/// <param name="pageSize">頁容量</param>
/// <param name="whereLambda">條件 lambda表達式</param>
/// <param name="orderBy">排序 lambda表達式</param>
/// <returns></returns>
List<T> GetPagedList<TKey>(int pageIndex, int pageSize, Expression<Func<T, bool>> whereLambda, Expression<Func<T, TKey>> orderBy);
#endregion
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;
namespace IBLL
{
/// <summary>
/// 業務父 接口
/// </summary>
/// <typeparam name="T"></typeparam>
public interface IBaseBLL<T> where T:class,new()
{
//定義 增刪改查 方法
#region 1.0 新增 實體 +int Add(T model)
/// <summary>
/// 新增 實體
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
int Add(T model);
#endregion
#region 2.0 根據 id 刪除 +int Del(T model)
/// <summary>
/// 根據 id 刪除
/// </summary>
/// <param name="model">包含要刪除id的對象</param>
/// <returns></returns>
int Del(T model);
#endregion
#region 3.0 根據條件刪除 +int DelBy(Expression<Func<T, bool>> delWhere)
/// <summary>
/// 3.0 根據條件刪除
/// </summary>
/// <param name="delWhere"></param>
/// <returns></returns>
int DelBy(Expression<Func<T, bool>> delWhere);
#endregion
#region 4.0 修改 +int Modify(T model, params string[] proNames)
/// <summary>
/// 4.0 修改，如：
/// T u = new T() { uId = 1, uLoginName = "asdfasdf" };
/// this.Modify(u, "uLoginName");
/// </summary>
/// <param name="model">要修改的實體對象</param>
/// <param name="proNames">要修改的 屬性 名稱</param>
/// <returns></returns>
int Modify(T model, params string[] proNames);
#endregion
#region 4.0 批量修改 +int Modify(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames)
/// <summary>
/// 4.0 批量修改
/// </summary>
/// <param name="model">要修改的實體對象</param>
/// <param name="whereLambda">查詢條件</param>
/// <param name="proNames">要修改的 屬性 名稱</param>
/// <returns></returns>
int ModifyBy(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames);
#endregion
#region 5.0 根據條件查詢 +List<T> GetListBy(Expression<Func<T,bool>> whereLambda)
/// <summary>
/// 5.0 根據條件查詢 +List<T> GetListBy(Expression<Func<T,bool>> whereLambda)
/// </summary>
/// <param name="whereLambda"></param>
/// <returns></returns>
List<T> GetListBy(Expression<Func<T, bool>> whereLambda);
#endregion
#region 5.1 根據條件 排序 和查詢 + List<T> GetListBy<TKey>
/// <summary>
/// 5.1 根據條件 排序 和查詢
/// </summary>
/// <typeparam name="TKey">排序字段類型</typeparam>
/// <param name="whereLambda">查詢條件 lambda表達式</param>
/// <param name="orderLambda">排序條件 lambda表達式</param>
/// <returns></returns>
List<T> GetListBy<TKey>(Expression<Func<T, bool>> whereLambda, Expression<Func<T, TKey>> orderLambda);
#endregion
#region 6.0 分頁查詢 + List<T> GetPagedList<TKey>
/// <summary>
/// 6.0 分頁查詢 + List<T> GetPagedList<TKey>
/// </summary>
/// <param name="pageIndex">頁碼</param>
/// <param name="pageSize">頁容量</param>
/// <param name="whereLambda">條件 lambda表達式</param>
/// <param name="orderBy">排序 lambda表達式</param>
/// <returns></returns>
List<T> GetPagedList<TKey>(int pageIndex, int pageSize, Expression<Func<T, bool>> whereLambda, Expression<Func<T, TKey>> orderBy);
#endregion
}
}
2、定義一個數據層父接口IBaseDAL.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;
namespace IDAL
{
/// <summary>
/// 數據層父接口
/// </summary>
public interface IBaseDAL<T> where T:class ,new()
{
//定義增刪改查方法
#region 1.0 新增 實體 +int Add(T model)
/// <summary>
/// 新增 實體
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
int Add(T model);
#endregion
#region 2.0 根據 id 刪除 +int Del(T model)
/// <summary>
/// 根據 id 刪除
/// </summary>
/// <param name="model">包含要刪除id的對象</param>
/// <returns></returns>
int Del(T model);
#endregion
#region 3.0 根據條件刪除 +int DelBy(Expression<Func<T, bool>> delWhere)
/// <summary>
/// 3.0 根據條件刪除
/// </summary>
/// <param name="delWhere"></param>
/// <returns></returns>
int DelBy(Expression<Func<T, bool>> delWhere);
#endregion
#region 4.0 修改 +int Modify(T model, params string[] proNames)
/// <summary>
/// 4.0 修改，如：
/// T u = new T() { uId = 1, uLoginName = "asdfasdf" };
/// this.Modify(u, "uLoginName");
/// </summary>
/// <param name="model">要修改的實體對象</param>
/// <param name="proNames">要修改的 屬性 名稱</param>
/// <returns></returns>
int Modify(T model, params string[] proNames);
#endregion
#region 4.0 批量修改 +int Modify(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames)
/// <summary>
/// 4.0 批量修改
/// </summary>
/// <param name="model">要修改的實體對象</param>
/// <param name="whereLambda">查詢條件</param>
/// <param name="proNames">要修改的 屬性 名稱</param>
/// <returns></returns>
int ModifyBy(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames);
#endregion
#region 5.0 根據條件查詢 +List<T> GetListBy(Expression<Func<T,bool>> whereLambda)
/// <summary>
/// 5.0 根據條件查詢 +List<T> GetListBy(Expression<Func<T,bool>> whereLambda)
/// </summary>
/// <param name="whereLambda"></param>
/// <returns></returns>
List<T> GetListBy(Expression<Func<T, bool>> whereLambda);
#endregion
#region 5.1 根據條件 排序 和查詢 + List<T> GetListBy<TKey>
/// <summary>
/// 5.1 根據條件 排序 和查詢
/// </summary>
/// <typeparam name="TKey">排序字段類型</typeparam>
/// <param name="whereLambda">查詢條件 lambda表達式</param>
/// <param name="orderLambda">排序條件 lambda表達式</param>
/// <returns></returns>
List<T> GetListBy<TKey>(Expression<Func<T, bool>> whereLambda, Expression<Func<T, TKey>> orderLambda);
#endregion
#region 6.0 分頁查詢 + List<T> GetPagedList<TKey>
/// <summary>
/// 6.0 分頁查詢 + List<T> GetPagedList<TKey>
/// </summary>
/// <param name="pageIndex">頁碼</param>
/// <param name="pageSize">頁容量</param>
/// <param name="whereLambda">條件 lambda表達式</param>
/// <param name="orderBy">排序 lambda表達式</param>
/// <returns></returns>
List<T> GetPagedList<TKey>(int pageIndex, int pageSize, Expression<Func<T, bool>> whereLambda, Expression<Func<T, TKey>> orderBy);
#endregion
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;
namespace IDAL
{
/// <summary>
/// 數據層父接口
/// </summary>
public interface IBaseDAL<T> where T:class ,new()
{
//定義增刪改查方法
#region 1.0 新增 實體 +int Add(T model)
/// <summary>
/// 新增 實體
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
int Add(T model);
#endregion
#region 2.0 根據 id 刪除 +int Del(T model)
/// <summary>
/// 根據 id 刪除
/// </summary>
/// <param name="model">包含要刪除id的對象</param>
/// <returns></returns>
int Del(T model);
#endregion
#region 3.0 根據條件刪除 +int DelBy(Expression<Func<T, bool>> delWhere)
/// <summary>
/// 3.0 根據條件刪除
/// </summary>
/// <param name="delWhere"></param>
/// <returns></returns>
int DelBy(Expression<Func<T, bool>> delWhere);
#endregion
#region 4.0 修改 +int Modify(T model, params string[] proNames)
/// <summary>
/// 4.0 修改，如：
/// T u = new T() { uId = 1, uLoginName = "asdfasdf" };
/// this.Modify(u, "uLoginName");
/// </summary>
/// <param name="model">要修改的實體對象</param>
/// <param name="proNames">要修改的 屬性 名稱</param>
/// <returns></returns>
int Modify(T model, params string[] proNames);
#endregion
#region 4.0 批量修改 +int Modify(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames)
/// <summary>
/// 4.0 批量修改
/// </summary>
/// <param name="model">要修改的實體對象</param>
/// <param name="whereLambda">查詢條件</param>
/// <param name="proNames">要修改的 屬性 名稱</param>
/// <returns></returns>
int ModifyBy(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames);
#endregion
#region 5.0 根據條件查詢 +List<T> GetListBy(Expression<Func<T,bool>> whereLambda)
/// <summary>
/// 5.0 根據條件查詢 +List<T> GetListBy(Expression<Func<T,bool>> whereLambda)
/// </summary>
/// <param name="whereLambda"></param>
/// <returns></returns>
List<T> GetListBy(Expression<Func<T, bool>> whereLambda);
#endregion
#region 5.1 根據條件 排序 和查詢 + List<T> GetListBy<TKey>
/// <summary>
/// 5.1 根據條件 排序 和查詢
/// </summary>
/// <typeparam name="TKey">排序字段類型</typeparam>
/// <param name="whereLambda">查詢條件 lambda表達式</param>
/// <param name="orderLambda">排序條件 lambda表達式</param>
/// <returns></returns>
List<T> GetListBy<TKey>(Expression<Func<T, bool>> whereLambda, Expression<Func<T, TKey>> orderLambda);
#endregion
#region 6.0 分頁查詢 + List<T> GetPagedList<TKey>
/// <summary>
/// 6.0 分頁查詢 + List<T> GetPagedList<TKey>
/// </summary>
/// <param name="pageIndex">頁碼</param>
/// <param name="pageSize">頁容量</param>
/// <param name="whereLambda">條件 lambda表達式</param>
/// <param name="orderBy">排序 lambda表達式</param>
/// <returns></returns>
List<T> GetPagedList<TKey>(int pageIndex, int pageSize, Expression<Func<T, bool>> whereLambda, Expression<Func<T, TKey>> orderBy);
#endregion
}
}
3、我們數據庫中有許多的表，通常每一張表都對應一個業務實體，如果我們每一個業務實體類都自己去手寫的話，太浪費時間了，我們可以使用T4模板，簡化這些枯燥的操作，提高我們的開發效率。
新建一個文本模板
然后把以下代碼復制上去，
<#@ template language="C#" debug="false" hostspecific="true"#>
<#@ include file="EF.Utility.CS.ttinclude"#><#@ output extension=".cs"#>
<#
CodeGenerationTools code = new CodeGenerationTools(this);
MetadataLoader loader = new MetadataLoader(this);
CodeRegion region = new CodeRegion(this, 1);
MetadataTools ef = new MetadataTools(this);
string inputFile = @"..\MODEL\OA.edmx";
EdmItemCollection ItemCollection = loader.CreateEdmItemCollection(inputFile);
string namespaceName = code.VsNamespaceSuggestion();
EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create(this);
#>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace IBLL
{
<#
// Emit Entity Types
foreach (EntityType entity in ItemCollection.GetItems<EntityType>().OrderBy(e => e.Name))
{
//fileManager.StartNewFile(entity.Name + "RepositoryExt.cs");
//BeginNamespace(namespaceName, code);
#>
public partial interface I<#=entity.Name#>BLL : IBaseBLL<Model.<#=entity.Name#>>
{
}
<#}#>
}
<#@ template language="C#" debug="false" hostspecific="true"#>
<#@ include file="EF.Utility.CS.ttinclude"#><#@ output extension=".cs"#>
<#
CodeGenerationTools code = new CodeGenerationTools(this);
MetadataLoader loader = new MetadataLoader(this);
CodeRegion region = new CodeRegion(this, 1);
MetadataTools ef = new MetadataTools(this);
string inputFile = @"..\MODEL\OA.edmx";
EdmItemCollection ItemCollection = loader.CreateEdmItemCollection(inputFile);
string namespaceName = code.VsNamespaceSuggestion();
EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create(this);
#>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace IBLL
{
<#
// Emit Entity Types
foreach (EntityType entity in ItemCollection.GetItems<EntityType>().OrderBy(e => e.Name))
{
//fileManager.StartNewFile(entity.Name + "RepositoryExt.cs");
//BeginNamespace(namespaceName, code);
#>
public partial interface I<#=entity.Name#>BLL : IBaseBLL<Model.<#=entity.Name#>>
{
}
<#}#>
}
按Ctrl+S自動生成代碼，自動生成的IBLL.cs如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace IBLL
{
public partial interface IBill_LeaveBLL : IBaseBLL<Model.Bill_Leave>
{
}
public partial interface IoldWF_AutoTransactNodeBLL : IBaseBLL<Model.oldWF_AutoTransactNode>
{
}
public partial interface IoldWF_BillFlowNodeBLL : IBaseBLL<Model.oldWF_BillFlowNode>
{
}
public partial interface IoldWF_BillFlowNodeRemarkBLL : IBaseBLL<Model.oldWF_BillFlowNodeRemark>
{
}
public partial interface IoldWF_BillStateBLL : IBaseBLL<Model.oldWF_BillState>
{
}
public partial interface IoldWF_NodeBLL : IBaseBLL<Model.oldWF_Node>
{
}
public partial interface IoldWF_NodeStateBLL : IBaseBLL<Model.oldWF_NodeState>
{
}
public partial interface IoldWF_WorkFlowBLL : IBaseBLL<Model.oldWF_WorkFlow>
{
}
public partial interface IoldWF_WorkFlowNodeBLL : IBaseBLL<Model.oldWF_WorkFlowNode>
{
}
public partial interface IOu_DepartmentBLL : IBaseBLL<Model.Ou_Department>
{
}
public partial interface IOu_PermissionBLL : IBaseBLL<Model.Ou_Permission>
{
}
public partial interface IOu_RoleBLL : IBaseBLL<Model.Ou_Role>
{
}
public partial interface IOu_RolePermissionBLL : IBaseBLL<Model.Ou_RolePermission>
{
}
public partial interface IOu_UserInfoBLL : IBaseBLL<Model.Ou_UserInfo>
{
}
public partial interface IOu_UserRoleBLL : IBaseBLL<Model.Ou_UserRole>
{
}
public partial interface IOu_UserVipPermissionBLL : IBaseBLL<Model.Ou_UserVipPermission>
{
}
public partial interface IW_WorkFlowBLL : IBaseBLL<Model.W_WorkFlow>
{
}
public partial interface IW_WorkFlowBranchBLL : IBaseBLL<Model.W_WorkFlowBranch>
{
}
public partial interface IW_WorkFlowNodeBLL : IBaseBLL<Model.W_WorkFlowNode>
{
}
public partial interface IW_WrokFlowRoleBLL : IBaseBLL<Model.W_WrokFlowRole>
{
}
public partial interface IWR_WorkFlowApplyBLL : IBaseBLL<Model.WR_WorkFlowApply>
{
}
public partial interface IWR_WrokFlowApplyDetailsBLL : IBaseBLL<Model.WR_WrokFlowApplyDetails>
{
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace IBLL
{
public partial interface IBill_LeaveBLL : IBaseBLL<Model.Bill_Leave>
{
}
public partial interface IoldWF_AutoTransactNodeBLL : IBaseBLL<Model.oldWF_AutoTransactNode>
{
}
public partial interface IoldWF_BillFlowNodeBLL : IBaseBLL<Model.oldWF_BillFlowNode>
{
}
public partial interface IoldWF_BillFlowNodeRemarkBLL : IBaseBLL<Model.oldWF_BillFlowNodeRemark>
{
}
public partial interface IoldWF_BillStateBLL : IBaseBLL<Model.oldWF_BillState>
{
}
public partial interface IoldWF_NodeBLL : IBaseBLL<Model.oldWF_Node>
{
}
public partial interface IoldWF_NodeStateBLL : IBaseBLL<Model.oldWF_NodeState>
{
}
public partial interface IoldWF_WorkFlowBLL : IBaseBLL<Model.oldWF_WorkFlow>
{
}
public partial interface IoldWF_WorkFlowNodeBLL : IBaseBLL<Model.oldWF_WorkFlowNode>
{
}
public partial interface IOu_DepartmentBLL : IBaseBLL<Model.Ou_Department>
{
}
public partial interface IOu_PermissionBLL : IBaseBLL<Model.Ou_Permission>
{
}
public partial interface IOu_RoleBLL : IBaseBLL<Model.Ou_Role>
{
}
public partial interface IOu_RolePermissionBLL : IBaseBLL<Model.Ou_RolePermission>
{
}
public partial interface IOu_UserInfoBLL : IBaseBLL<Model.Ou_UserInfo>
{
}
public partial interface IOu_UserRoleBLL : IBaseBLL<Model.Ou_UserRole>
{
}
public partial interface IOu_UserVipPermissionBLL : IBaseBLL<Model.Ou_UserVipPermission>
{
}
public partial interface IW_WorkFlowBLL : IBaseBLL<Model.W_WorkFlow>
{
}
public partial interface IW_WorkFlowBranchBLL : IBaseBLL<Model.W_WorkFlowBranch>
{
}
public partial interface IW_WorkFlowNodeBLL : IBaseBLL<Model.W_WorkFlowNode>
{
}
public partial interface IW_WrokFlowRoleBLL : IBaseBLL<Model.W_WrokFlowRole>
{
}
public partial interface IWR_WorkFlowApplyBLL : IBaseBLL<Model.WR_WorkFlowApply>
{
}
public partial interface IWR_WrokFlowApplyDetailsBLL : IBaseBLL<Model.WR_WrokFlowApplyDetails>
{
}
}
4、把IBLL.tt拷貝到IDAL項目下，然后修改命名空間為IDAL，修改接口聲明模板
namespace IDAL public partial interface I<#=entity.Name#>DAL : IBaseDAL<Model.<#=entity.Name#>>
按Ctrl+S自動生成代碼，自動生成的IDAL.cs如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace IDAL
{
public partial interface IBill_LeaveDAL : IBaseDAL<Model.Bill_Leave>
{
}
public partial interface IoldWF_AutoTransactNodeDAL : IBaseDAL<Model.oldWF_AutoTransactNode>
{
}
public partial interface IoldWF_BillFlowNodeDAL : IBaseDAL<Model.oldWF_BillFlowNode>
{
}
public partial interface IoldWF_BillFlowNodeRemarkDAL : IBaseDAL<Model.oldWF_BillFlowNodeRemark>
{
}
public partial interface IoldWF_BillStateDAL : IBaseDAL<Model.oldWF_BillState>
{
}
public partial interface IoldWF_NodeDAL : IBaseDAL<Model.oldWF_Node>
{
}
public partial interface IoldWF_NodeStateDAL : IBaseDAL<Model.oldWF_NodeState>
{
}
public partial interface IoldWF_WorkFlowDAL : IBaseDAL<Model.oldWF_WorkFlow>
{
}
public partial interface IoldWF_WorkFlowNodeDAL : IBaseDAL<Model.oldWF_WorkFlowNode>
{
}
public partial interface IOu_DepartmentDAL : IBaseDAL<Model.Ou_Department>
{
}
public partial interface IOu_PermissionDAL : IBaseDAL<Model.Ou_Permission>
{
}
public partial interface IOu_RoleDAL : IBaseDAL<Model.Ou_Role>
{
}
public partial interface IOu_RolePermissionDAL : IBaseDAL<Model.Ou_RolePermission>
{
}
public partial interface IOu_UserInfoDAL : IBaseDAL<Model.Ou_UserInfo>
{
}
public partial interface IOu_UserRoleDAL : IBaseDAL<Model.Ou_UserRole>
{
}
public partial interface IOu_UserVipPermissionDAL : IBaseDAL<Model.Ou_UserVipPermission>
{
}
public partial interface IW_WorkFlowDAL : IBaseDAL<Model.W_WorkFlow>
{
}
public partial interface IW_WorkFlowBranchDAL : IBaseDAL<Model.W_WorkFlowBranch>
{
}
public partial interface IW_WorkFlowNodeDAL : IBaseDAL<Model.W_WorkFlowNode>
{
}
public partial interface IW_WrokFlowRoleDAL : IBaseDAL<Model.W_WrokFlowRole>
{
}
public partial interface IWR_WorkFlowApplyDAL : IBaseDAL<Model.WR_WorkFlowApply>
{
}
public partial interface IWR_WrokFlowApplyDetailsDAL : IBaseDAL<Model.WR_WrokFlowApplyDetails>
{
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace IDAL
{
public partial interface IBill_LeaveDAL : IBaseDAL<Model.Bill_Leave>
{
}
public partial interface IoldWF_AutoTransactNodeDAL : IBaseDAL<Model.oldWF_AutoTransactNode>
{
}
public partial interface IoldWF_BillFlowNodeDAL : IBaseDAL<Model.oldWF_BillFlowNode>
{
}
public partial interface IoldWF_BillFlowNodeRemarkDAL : IBaseDAL<Model.oldWF_BillFlowNodeRemark>
{
}
public partial interface IoldWF_BillStateDAL : IBaseDAL<Model.oldWF_BillState>
{
}
public partial interface IoldWF_NodeDAL : IBaseDAL<Model.oldWF_Node>
{
}
public partial interface IoldWF_NodeStateDAL : IBaseDAL<Model.oldWF_NodeState>
{
}
public partial interface IoldWF_WorkFlowDAL : IBaseDAL<Model.oldWF_WorkFlow>
{
}
public partial interface IoldWF_WorkFlowNodeDAL : IBaseDAL<Model.oldWF_WorkFlowNode>
{
}
public partial interface IOu_DepartmentDAL : IBaseDAL<Model.Ou_Department>
{
}
public partial interface IOu_PermissionDAL : IBaseDAL<Model.Ou_Permission>
{
}
public partial interface IOu_RoleDAL : IBaseDAL<Model.Ou_Role>
{
}
public partial interface IOu_RolePermissionDAL : IBaseDAL<Model.Ou_RolePermission>
{
}
public partial interface IOu_UserInfoDAL : IBaseDAL<Model.Ou_UserInfo>
{
}
public partial interface IOu_UserRoleDAL : IBaseDAL<Model.Ou_UserRole>
{
}
public partial interface IOu_UserVipPermissionDAL : IBaseDAL<Model.Ou_UserVipPermission>
{
}
public partial interface IW_WorkFlowDAL : IBaseDAL<Model.W_WorkFlow>
{
}
public partial interface IW_WorkFlowBranchDAL : IBaseDAL<Model.W_WorkFlowBranch>
{
}
public partial interface IW_WorkFlowNodeDAL : IBaseDAL<Model.W_WorkFlowNode>
{
}
public partial interface IW_WrokFlowRoleDAL : IBaseDAL<Model.W_WrokFlowRole>
{
}
public partial interface IWR_WorkFlowApplyDAL : IBaseDAL<Model.WR_WorkFlowApply>
{
}
public partial interface IWR_WrokFlowApplyDetailsDAL : IBaseDAL<Model.WR_WrokFlowApplyDetails>
{
}
}
注意，我這里生成的所有接口都是partial類型的，這樣我以后可以很方便的進行擴展
關於T4模板的使用不在本篇所講的范疇，有興趣的朋友，可以查找相關資料學習，我這里只做簡要說明。
<#@ include file="EF.Utility.CS.ttinclude"#>：引入微軟的生成框架
<#@ output extension=".cs"#>：指定生成的文件類型為.cs文件
string inputFile = @"..\MODEL\OA.edmx"：這里使用相對路徑指向我們新建的ADO.NET實體數據模型文件。
5、添加數據層的父類BaseDAL.cs
前面數據層接口和業務層接口都已經添加好了，那么現在來添加數據層類和業務層類
在DAL項目中添加EntityFramework.dll和System.Data.Entity.dll的引用
View Code
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Data.Entity.Infrastructure;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
using System.Text;
using Model;
namespace DAL
{
/// <summary>
/// 數據層 父類
/// </summary>
/// <typeparam name="T"></typeparam>
public class BaseDAL<T> : IDAL.IBaseDAL<T> where T : class,new()
{
/// <summary>
/// EF上下文對象
/// </summary>
DbContext db = new OAEntities(); //new DBContextFactory().GetDbContext();//
#region 1.0 新增 實體 +int Add(T model)
/// <summary>
/// 新增 實體
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
public int Add(T model)
{
db.Set<T>().Add(model);
return db.SaveChanges();//保存成功后，會將自增的id設置給 model的 主鍵屬性，並返回受影響行數
}
#endregion
#region 2.0 根據 id 刪除 +int Del(T model)
/// <summary>
/// 根據 id 刪除
/// </summary>
/// <param name="model">包含要刪除id的對象</param>
/// <returns></returns>
public int Del(T model)
{
db.Set<T>().Attach(model);
db.Set<T>().Remove(model);
return db.SaveChanges();
}
#endregion
#region 3.0 根據條件刪除 +int DelBy(Expression<Func<T, bool>> delWhere)
/// <summary>
/// 3.0 根據條件刪除
/// </summary>
/// <param name="delWhere"></param>
/// <returns></returns>
public int DelBy(Expression<Func<T, bool>> delWhere)
{
//3.1查詢要刪除的數據
List<T> listDeleting = db.Set<T>().Where(delWhere).ToList();
//3.2將要刪除的數據 用刪除方法添加到 EF 容器中
listDeleting.ForEach(u =>
{
db.Set<T>().Attach(u);//先附加到 EF容器
db.Set<T>().Remove(u);//標識為 刪除 狀態
});
//3.3一次性 生成sql語句到數據庫執行刪除
return db.SaveChanges();
}
#endregion
#region 4.0 修改 +int Modify(T model, params string[] proNames)
/// <summary>
/// 4.0 修改，如：
/// T u = new T() { uId = 1, uLoginName = "asdfasdf" };
/// this.Modify(u, "uLoginName");
/// </summary>
/// <param name="model">要修改的實體對象</param>
/// <param name="proNames">要修改的 屬性 名稱</param>
/// <returns></returns>
public int Modify(T model, params string[] proNames)
{
//4.1將 對象 添加到 EF中
DbEntityEntry entry = db.Entry<T>(model);
//4.2先設置 對象的包裝 狀態為 Unchanged
entry.State = System.Data.EntityState.Unchanged;
//4.3循環 被修改的屬性名 數組
foreach (string proName in proNames)
{
//4.4將每個 被修改的屬性的狀態 設置為已修改狀態;后面生成update語句時，就只為已修改的屬性 更新
entry.Property(proName).IsModified = true;
}
//4.4一次性 生成sql語句到數據庫執行
return db.SaveChanges();
}
#endregion
#region 4.0 批量修改 +int Modify(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames)
/// <summary>
/// 4.0 批量修改
/// </summary>
/// <param name="model">要修改的實體對象</param>
/// <param name="whereLambda">查詢條件</param>
/// <param name="proNames">要修改的 屬性 名稱</param>
/// <returns></returns>
public int ModifyBy(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames)
{
//4.1查詢要修改的數據
List<T> listModifing = db.Set<T>().Where(whereLambda).ToList();
//獲取 實體類 類型對象
Type t = typeof(T); // model.GetType();
//獲取 實體類 所有的 公有屬性
List<PropertyInfo> proInfos = t.GetProperties(BindingFlags.Instance | BindingFlags.Public).ToList();
//創建 實體屬性 字典集合
Dictionary<string, PropertyInfo> dictPros = new Dictionary<string, PropertyInfo>();
//將 實體屬性 中要修改的屬性名 添加到 字典集合中 鍵：屬性名 值：屬性對象
proInfos.ForEach(p =>
{
if (modifiedProNames.Contains(p.Name))
{
dictPros.Add(p.Name, p);
}
});
//4.3循環 要修改的屬性名
foreach (string proName in modifiedProNames)
{
//判斷 要修改的屬性名是否在 實體類的屬性集合中存在
if (dictPros.ContainsKey(proName))
{
//如果存在，則取出要修改的 屬性對象
PropertyInfo proInfo = dictPros[proName];
//取出 要修改的值
object newValue = proInfo.GetValue(model, null); //object newValue = model.uName;
//4.4批量設置 要修改 對象的 屬性
foreach (T usrO in listModifing)
{
//為 要修改的對象 的 要修改的屬性 設置新的值
proInfo.SetValue(usrO, newValue, null); //usrO.uName = newValue;
}
}
}
//4.4一次性 生成sql語句到數據庫執行
return db.SaveChanges();
}
#endregion
#region 5.0 根據條件查詢 +List<T> GetListBy(Expression<Func<T,bool>> whereLambda)
/// <summary>
/// 5.0 根據條件查詢 +List<T> GetListBy(Expression<Func<T,bool>> whereLambda)
/// </summary>
/// <param name="whereLambda"></param>
/// <returns></returns>
public List<T> GetListBy(Expression<Func<T, bool>> whereLambda)
{
return db.Set<T>().Where(whereLambda).ToList();
}
#endregion
#region 5.1 根據條件 排序 和查詢 + List<T> GetListBy<TKey>
/// <summary>
/// 5.1 根據條件 排序 和查詢
/// </summary>
/// <typeparam name="TKey">排序字段類型</typeparam>
/// <param name="whereLambda">查詢條件 lambda表達式</param>
/// <param name="orderLambda">排序條件 lambda表達式</param>
/// <returns></returns>
public List<T> GetListBy<TKey>(Expression<Func<T, bool>> whereLambda, Expression<Func<T, TKey>> orderLambda)
{
return db.Set<T>().Where(whereLambda).OrderBy(orderLambda).ToList();
}
#endregion
#region 6.0 分頁查詢 + List<T> GetPagedList<TKey>
/// <summary>
/// 6.0 分頁查詢 + List<T> GetPagedList<TKey>
/// </summary>
/// <param name="pageIndex">頁碼</param>
/// <param name="pageSize">頁容量</param>
/// <param name="whereLambda">條件 lambda表達式</param>
/// <param name="orderBy">排序 lambda表達式</param>
/// <returns></returns>
public List<T> GetPagedList<TKey>(int pageIndex, int pageSize, Expression<Func<T, bool>> whereLambda, Expression<Func<T, TKey>> orderBy)
{
// 分頁 一定注意： Skip 之前一定要 OrderBy
return db.Set<T>().Where(whereLambda).OrderBy(orderBy).Skip((pageIndex - 1) * pageSize).Take(pageSize).ToList();
}
#endregion
}
}
6、拷貝IDAL.tt到DAL項目中，改名為DAL.tt，然后修改T4模板
按Ctrl+S自動生成代碼，自動生成的DAL.cs如下：
View Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using IDAL;
namespace DAL
{
public partial class Bill_LeaveDAL : BaseDAL<Model.Bill_Leave>,IBill_LeaveDAL
{
}
public partial class oldWF_AutoTransactNodeDAL : BaseDAL<Model.oldWF_AutoTransactNode>,IoldWF_AutoTransactNodeDAL
{
}
public partial class oldWF_BillFlowNodeDAL : BaseDAL<Model.oldWF_BillFlowNode>,IoldWF_BillFlowNodeDAL
{
}
public partial class oldWF_BillFlowNodeRemarkDAL : BaseDAL<Model.oldWF_BillFlowNodeRemark>,IoldWF_BillFlowNodeRemarkDAL
{
}
public partial class oldWF_BillStateDAL : BaseDAL<Model.oldWF_BillState>,IoldWF_BillStateDAL
{
}
public partial class oldWF_NodeDAL : BaseDAL<Model.oldWF_Node>,IoldWF_NodeDAL
{
}
public partial class oldWF_NodeStateDAL : BaseDAL<Model.oldWF_NodeState>,IoldWF_NodeStateDAL
{
}
public partial class oldWF_WorkFlowDAL : BaseDAL<Model.oldWF_WorkFlow>,IoldWF_WorkFlowDAL
{
}
public partial class oldWF_WorkFlowNodeDAL : BaseDAL<Model.oldWF_WorkFlowNode>,IoldWF_WorkFlowNodeDAL
{
}
public partial class Ou_DepartmentDAL : BaseDAL<Model.Ou_Department>,IOu_DepartmentDAL
{
}
public partial class Ou_PermissionDAL : BaseDAL<Model.Ou_Permission>,IOu_PermissionDAL
{
}
public partial class Ou_RoleDAL : BaseDAL<Model.Ou_Role>,IOu_RoleDAL
{
}
public partial class Ou_RolePermissionDAL : BaseDAL<Model.Ou_RolePermission>,IOu_RolePermissionDAL
{
}
public partial class Ou_UserInfoDAL : BaseDAL<Model.Ou_UserInfo>,IOu_UserInfoDAL
{
}
public partial class Ou_UserRoleDAL : BaseDAL<Model.Ou_UserRole>,IOu_UserRoleDAL
{
}
public partial class Ou_UserVipPermissionDAL : BaseDAL<Model.Ou_UserVipPermission>,IOu_UserVipPermissionDAL
{
}
public partial class W_WorkFlowDAL : BaseDAL<Model.W_WorkFlow>,IW_WorkFlowDAL
{
}
public partial class W_WorkFlowBranchDAL : BaseDAL<Model.W_WorkFlowBranch>,IW_WorkFlowBranchDAL
{
}
public partial class W_WorkFlowNodeDAL : BaseDAL<Model.W_WorkFlowNode>,IW_WorkFlowNodeDAL
{
}
public partial class W_WrokFlowRoleDAL : BaseDAL<Model.W_WrokFlowRole>,IW_WrokFlowRoleDAL
{
}
public partial class WR_WorkFlowApplyDAL : BaseDAL<Model.WR_WorkFlowApply>,IWR_WorkFlowApplyDAL
{
}
public partial class WR_WrokFlowApplyDetailsDAL : BaseDAL<Model.WR_WrokFlowApplyDetails>,IWR_WrokFlowApplyDetailsDAL
{
}
}
7、添加業務層的父類BaseBLL.cs
View Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Reflection;
namespace BLL
{
/// <summary>
/// 業務層父類
/// </summary>
/// <typeparam name="T"></typeparam>
public abstract class BaseBLL<T> : IBLL.IBaseBLL<T> where T : class,new()
{
public BaseBLL()
{
SetDAL();
}
//1.數據層接口 對象 - 等待 被實例化
protected IDAL.IBaseDAL<T> idal;// = new idal.BaseDAL();
/// <summary>
/// 由子類實現，為 業務父類 里的 數據接口對象 設置 值！
/// </summary>
public abstract void SetDAL();
//2.增刪改查方法
#region 1.0 新增 實體 +int Add(T model)
/// <summary>
/// 新增 實體
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
public int Add(T model)
{
return idal.Add(model);
}
#endregion
#region 2。0 根據 用戶 id 刪除 +int Del(int uId)
/// <summary>
/// 根據 用戶 id 刪除
/// </summary>
/// <param name="uId"></param>
/// <returns></returns>
public int Del(T model)
{
return idal.Del(model);
}
#endregion
#region 3.0 根據條件刪除 +int DelBy(Expression<Func<T, bool>> delWhere)
/// <summary>
/// 3.0 根據條件刪除
/// </summary>
/// <param name="delWhere"></param>
/// <returns></returns>
public int DelBy(Expression<Func<T, bool>> delWhere)
{
return idal.DelBy(delWhere);
}
#endregion
#region 4.0 修改 +int Modify(T model, params string[] proNames)
/// <summary>
/// 4.0 修改，如：
/// </summary>
/// <param name="model">要修改的實體對象</param>
/// <param name="proNames">要修改的 屬性 名稱</param>
/// <returns></returns>
public int Modify(T model, params string[] proNames)
{
return idal.Modify(model, proNames);
}
#endregion
#region 4.0 批量修改 +int Modify(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames)
/// <summary>
/// 4.0 批量修改 +int Modify(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames)
/// </summary>
/// <param name="model"></param>
/// <param name="whereLambda"></param>
/// <param name="modifiedProNames"></param>
/// <returns></returns>
public int ModifyBy(T model, Expression<Func<T, bool>> whereLambda, params string[] modifiedProNames)
{
return idal.ModifyBy(model, whereLambda, modifiedProNames);
}
#endregion
#region 5.0 根據條件查詢 +List<T> GetListBy(Expression<Func<T,bool>> whereLambda)
/// <summary>
/// 5.0 根據條件查詢 +List<T> GetListBy(Expression<Func<T,bool>> whereLambda)
/// </summary>
/// <param name="whereLambda"></param>
/// <returns></returns>
public List<T> GetListBy(Expression<Func<T, bool>> whereLambda)
{
return idal.GetListBy(whereLambda);
}
#endregion
#region 5.1 根據條件 排序 和查詢 + List<T> GetListBy<TKey>
/// <summary>
/// 5.1 根據條件 排序 和查詢
/// </summary>
/// <typeparam name="TKey">排序字段類型</typeparam>
/// <param name="whereLambda">查詢條件 lambda表達式</param>
/// <param name="orderLambda">排序條件 lambda表達式</param>
/// <returns></returns>
public List<T> GetListBy<TKey>(Expression<Func<T, bool>> whereLambda, Expression<Func<T, TKey>> orderLambda)
{
return idal.GetListBy(whereLambda, orderLambda);
}
#endregion
#region 6.0 分頁查詢 + List<T> GetPagedList<TKey>
/// <summary>
/// 6.0 分頁查詢 + List<T> GetPagedList<TKey>
/// </summary>
/// <param name="pageIndex">頁碼</param>
/// <param name="pageSize">頁容量</param>
/// <param name="whereLambda">條件 lambda表達式</param>
/// <param name="orderBy">排序 lambda表達式</param>
/// <returns></returns>
public List<T> GetPagedList<TKey>(int pageIndex, int pageSize, Expression<Func<T, bool>> whereLambda, Expression<Func<T, TKey>> orderBy)
{
return idal.GetPagedList(pageIndex, pageSize, whereLambda, orderBy);
}
#endregion
}
}
8、同樣的拷貝IBLL.tt到BLL項目下，重命名為BLL.tt，然后修改T4模板，按Ctrl+S自動生成代碼，自動生成的BLL.cs如下：
View Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using IBLL;
namespace BLL
{
public partial class Bill_LeaveBLL : BaseBLL<Model.Bill_Leave>,IBill_LeaveBLL
{
}
public partial class oldWF_AutoTransactNodeBLL : BaseBLL<Model.oldWF_AutoTransactNode>,IoldWF_AutoTransactNodeBLL
{
}
public partial class oldWF_BillFlowNodeBLL : BaseBLL<Model.oldWF_BillFlowNode>,IoldWF_BillFlowNodeBLL
{
}
public partial class oldWF_BillFlowNodeRemarkBLL : BaseBLL<Model.oldWF_BillFlowNodeRemark>,IoldWF_BillFlowNodeRemarkBLL
{
}
public partial class oldWF_BillStateBLL : BaseBLL<Model.oldWF_BillState>,IoldWF_BillStateBLL
{
}
public partial class oldWF_NodeBLL : BaseBLL<Model.oldWF_Node>,IoldWF_NodeBLL
{
}
public partial class oldWF_NodeStateBLL : BaseBLL<Model.oldWF_NodeState>,IoldWF_NodeStateBLL
{
}
public partial class oldWF_WorkFlowBLL : BaseBLL<Model.oldWF_WorkFlow>,IoldWF_WorkFlowBLL
{
}
public partial class oldWF_WorkFlowNodeBLL : BaseBLL<Model.oldWF_WorkFlowNode>,IoldWF_WorkFlowNodeBLL
{
}
public partial class Ou_DepartmentBLL : BaseBLL<Model.Ou_Department>,IOu_DepartmentBLL
{
}
public partial class Ou_PermissionBLL : BaseBLL<Model.Ou_Permission>,IOu_PermissionBLL
{
}
public partial class Ou_RoleBLL : BaseBLL<Model.Ou_Role>,IOu_RoleBLL
{
}
public partial class Ou_RolePermissionBLL : BaseBLL<Model.Ou_RolePermission>,IOu_RolePermissionBLL
{
}
public partial class Ou_UserInfoBLL : BaseBLL<Model.Ou_UserInfo>,IOu_UserInfoBLL
{
}
public partial class Ou_UserRoleBLL : BaseBLL<Model.Ou_UserRole>,IOu_UserRoleBLL
{
}
public partial class Ou_UserVipPermissionBLL : BaseBLL<Model.Ou_UserVipPermission>,IOu_UserVipPermissionBLL
{
}
public partial class W_WorkFlowBLL : BaseBLL<Model.W_WorkFlow>,IW_WorkFlowBLL
{
}
public partial class W_WorkFlowBranchBLL : BaseBLL<Model.W_WorkFlowBranch>,IW_WorkFlowBranchBLL
{
}
public partial class W_WorkFlowNodeBLL : BaseBLL<Model.W_WorkFlowNode>,IW_WorkFlowNodeBLL
{
}
public partial class W_WrokFlowRoleBLL : BaseBLL<Model.W_WrokFlowRole>,IW_WrokFlowRoleBLL
{
}
public partial class WR_WorkFlowApplyBLL : BaseBLL<Model.WR_WorkFlowApply>,IWR_WorkFlowApplyBLL
{
}
public partial class WR_WrokFlowApplyDetailsBLL : BaseBLL<Model.WR_WrokFlowApplyDetails>,IWR_WrokFlowApplyDetailsBLL
{
}
}
到此，業務父類、業務類、數據父類、數據類都已經創建好了，里面有些東西還需要優化的，后續一步一步完善。
如果VS2012中沒有T4模板和智能提示，可以使用NuGet安裝tangibleT4EditorPlusModellingToolsVS2012