基于CodeSmith的MVC开发框架构思

数据库:SQL Server 2000

Model, 即实体类,使用CodeSmith根据数据库表自动生成．这个是最常用的．

数据访问层, 最简单的增删改查操作也是使用CodeSmith根据数据库表配合SQLHelper类自动生成．

这层的设计,先贴点未完工的代码给大家参考参考.

1.DalCode.cs


using System;


using System.Collections.Generic;


using System.Text;


using CodeSmith;


using SchemaExplorer;


using CodeSmith.CustomProperties;




namespace DalCode




...{




/**//// <summary>


/// CodeSmith的DAL模板的代码类


/// </summary>


public class DalCode




...{


//表


private TableSchema Table;






/**//// <summary>


/// 构造函数


/// </summary>


/// <param name="table"></param>


public DalCode(SchemaExplorer .TableSchema table)




...{


Table = table;


}






/**//// <summary>


/// 获取Insert方法所需字段名


/// </summary>


/// <returns></returns>


public NameValueCollection GetInsertParm()




...{


NameValueCollection parm = new NameValueCollection();


foreach(ColumnSchema cs in Table .Columns)




...{


if(!IsIdentity (cs))




...{


if(!IsDefault (cs))




...{


parm.Add(cs.Name,ToSQLType (cs.DataType.ToString()));


}


}


}




return parm;


}






/**//// <summary>


/// 获取Delete方法所需字段名


/// </summary>


/// <returns></returns>


public NameValueCollection GetDeleteParm()




...{


NameValueCollection parm = new NameValueCollection();




foreach (ColumnSchema cs in Table.Columns)




...{


if (IsIdentity(cs))




...{


parm.Add(cs.Name, cs.DataType.ToString());


}


}


return parm;


}






/**//// <summary>


/// 获取Update方法所需字段名


/// </summary>


/// <returns></returns>


public NameValueCollection GetUpdateParm()




...{


NameValueCollection parm = new NameValueCollection();




foreach (ColumnSchema cs in Table.Columns)




...{


if (!IsIdentity(cs))




...{


parm.Add(cs.Name, cs.DataType.ToString());


}


}




return parm;


}






/**//// <summary>


/// 获取Select方法所需字段名


/// </summary>


/// <returns></returns>


public NameValueCollection GetSelectParm()




...{


NameValueCollection parm = new NameValueCollection();




foreach (ColumnSchema cs in Table.Columns)




...{


if (IsIdentity(cs))




...{


parm.Add(cs.Name, cs.DataType.ToString());


}


}




return parm;


}






/**//// <summary>


/// 检查字段是否为标识符


/// </summary>


/// <param name="cs"></param>


/// <returns></returns>


private bool IsIdentity(ColumnSchema cs)




...{


return (bool)cs.ExtendedProperties["CS_IsIdentity"].Value;


}






/**//// <summary>


/// 检查字段是否有默认值


/// </summary>


/// <param name="cs"></param>


/// <returns></returns>


private bool IsDefault(ColumnSchema cs)




...{


if ((String)cs.ExtendedProperties["CS_Default"].Value == "")




...{


return false;


}




return true;


}






/**//// <summary>


/// 将数据类型转换成SQL数据类型


/// </summary>


/// <param name="type"></param>


/// <returns></returns>


private string ToSQLType(string type)




...{


switch (type)




...{


case "AnsiString":


return "SqlDbType.VarChar";


break;


default :


return type;


}


}


}


}

2. dal.cst CodeSmith模板文件


<%--


Name:


Author:


Description:


--%>


<%@ CodeTemplate Language="C#" TargetLanguage="Text" ResponseEncoding="UTF-8" Description="Template description here." %>


<%@ Assembly Name="SchemaExplorer" %>


<%@ Import Namespace="SchemaExplorer" %>


<%@ Assembly Name="CodeSmith.CustomProperties" %>


<%@ Import Namespace="CodeSmith.CustomProperties" %>


<%@ Assembly Name="DalCode" %>


<%@ Import Namespace="DalCode" %>




<%@ Property Name="Table" Type="SchemaExplorer.TableSchema" Category="Context" Description="?????." %>


<%@ Property Name="NameSpace" Type="System.String" Default="Company.Product.Module" Optional="False" Category="" Description="????" %>


<%@ Property Name="Author" Type="System.String" Default="Author" Optional="False" Category="" Description="??" %>


<%@ Property Name="Description" Type="System.String" Default="Description" Optional="False" Category="" Description="Description" %>


<%@ Property Name="ClassName" Type="System.String" Default="ClassName" Optional="False" Category="" Description="??" %>


<%@ Property Name="InsertParm" Type="CodeSmith.CustomProperties.NameValueCollection" Default="" Optional="true" Category="" Description=""%>


<%@ Property Name="DeleteParm" Type="CodeSmith.CustomProperties.NameValueCollection" Default="" Optional="true" Category="" Description=""%>


<%@ Property Name="UpdateParm" Type="CodeSmith.CustomProperties.NameValueCollection" Default="" Optional="true" Category="" Description=""%>


<%@ Property Name="SelectParm" Type="CodeSmith.CustomProperties.NameValueCollection" Default="" Optional="true" Category="" Description=""%>


<%@ Property Name="ModelType" Type="System.String" Default="ModelType" Optional="False" Category="" Description="??" %>


<%@ Property Name="ModelName" Type="System.String" Default="ModelName" Optional="False" Category="" Description="??" %>


using System;




namespace <%= NameSpace %>




...{




/**//// <summary>


/// 作用:<%= Description %>


/// 作者:<%= Author %>


/// 日期:<%= DateTime.Now.ToString() %>


///</summary>


public class <%= ClassName%>




...{


<%


DalCode dal = new DalCode(Table);


InsertParm = dal.GetInsertParm();


string InsertName = InsertParm[0].Key;


string InsertValue = "@" + InsertParm[0].Key;


for(int i = 1;i < InsertParm.Keys.Count;i++)




...{


InsertName += ",";


InsertName += InsertParm[i].Key;




InsertValue += ",";


InsertValue += "@" + InsertParm[i].Key;


}




DeleteParm = dal .GetDeleteParm ();




UpdateParm = dal.GetUpdateParm ();


string UpdateString = UpdateParm[0].Key + " = @" + UpdateParm[0].Key;


for(int i = 1;i < UpdateParm.Keys.Count;i++)




...{


UpdateString += ",";


UpdateString += UpdateParm[i].Key + " = @" + UpdateParm[i].Key;


}




SelectParm = dal.GetSelectParm ();


%>




private const string SQL_INSERT_TOPIC = "INSERT INTO <%=Table.Name%> (<%=InsertName%>) VALUES(<%=InsertValue%>)";


private const string SQL_DELETE_TOPIC = "DELETE FROM <%=Table.Name%> WHERE <%=DeleteParm[0].Key%> = @<%=DeleteParm[0].Key%>";


private const string SQL_UPDATE_TOPIC = "UPDATE <%=Table.Name%> SET <%=UpdateString%> WHERE <%=DeleteParm[0].Key%> = @<%=DeleteParm[0].Key%>";


private const string SQL_SELECT_TOPIC = "SELECT * FROM <%=Table.Name%> WHERE <%=SelectParm[0].Key%> = @<%=SelectParm[0].Key%>";






/**//// <summary>


/// INSERT


/// </summary>


/// <returns></returns>


public int Insert(<%=ModelType%> <%=ModelName%>)




...{


SqlParameter[] insertParm = GetInsertParameters();


<%


for(int i = 0;i < InsertParm.Keys.Count;i++)




...{


%>


insertParm[<%=i%>].Value = <%=ModelName%>.<%=InsertParm[i].Key%>;


<%


}


%>




int val = SQLHelper.ExecuteNonQuery(SQLHelper.CONN_STRING_NON_DTC, CommandType.Text, SQL_INSERT_TOPIC, insertParm);




return val;


}






/**//// <summary>


/// 获取SELECT操作的SQL参数


/// </summary>


/// <returns></returns>


public static SqlParameter[] GetInsertParameters()




...{


SqlParameter[] parms = SQLHelper.GetCachedParameters(SQL_INSERT_TOPIC);




if (parms == null)




...{


parms = new SqlParameter[]




...{


<%


for(int i = 0;i < InsertParm.Keys.Count;i++)




...{


%>


new SqlParameter("@<%=InsertParm[i].Key%>",<%=InsertParm[i].Value%>),


<%


}


%>


};




SQLHelper.CacheParameters(SQL_INSERT_TOPIC, parms);


}




return parms;


}


}


}



设计中的作品,相当乱.

主要的只是想说个想法.