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最新推荐文章于 2025-09-05 11:26:57 发布

转载最新推荐文章于 2025-09-05 11:26:57 发布 · 80 阅读

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/fenqinearl/p/10970240.html

文章标签：

#c#

动软有点局限。

CodeSmith 写的我有点苦逼，但是扩展性强。

Entity Class

<%@ Template Language="C#" TargetLanguage="Text" %>
<%@ Property Name="SourceTable" Default="" Type="SchemaExplorer.TableSchema" %>
<%@ Property Name="ProjectName" Type="System.String" Default="eyblog" Optional="False" Category="Strings" Description="this is my blog" %>
<%@ Assembly Name="SchemaExplorer" %>
<%@ Import Namespace="SchemaExplorer"%>

<%@ Map Name="SqlCSharp" Src="Sql-CSharp" Description="System to C# Type Map" %>
<%@ Map Name="DbDataReader" Src="DbType-DataReaderMethod" Description="DbType to DataReader Method Map" %>
<%@ Map Name="SqlNativeSqlDb" Src="SqlNativeType-SqlDbType" Description="SqlNativeType to SqlDbType Map" %>
<%@ Map Name="DbTypeCSharp" Src="DbType-CSharp" Description="DbType to CSharp Map" %>
//该类由codesmith模版编写
using System;

namespace <%=ProjectName%>.Model
{
   
    <%--类--%>
    public class <%=GetClassName(SourceTable)%>Entity
    {
    <%
        foreach(ColumnSchema column in SourceTable.Columns)
        {
    %>
    <%=GetMemberVariableDeclarationStatement(column)%>
    <% 
        }
    %>
    
    public <%=GetClassName(SourceTable)%>Entity()
    {
    
    }
    
    <%--有参构造函数--%>
    public  <%=GetClassName(SourceTable)%>Entity(<%=GetConStructorParameters(SourceTable) %>)
    {
    <%  
              foreach(ColumnSchema column in SourceTable.Columns)  
              {  
    %>  
    <%= GetMemberVariableName(column) %>=<%= GetMemberVariableName(column).Substring(1) %>;  
           
    <%  
              }  
    %>
    }
    <% foreach(ColumnSchema column in SourceTable.Columns)
    {
    %>
        public <%=GetCSharpVariableType(column)%> <%=GetPascalMemberVariableName(column)%>
        {
            get{return <%=GetMemberVariableName(column)%>;}
            get{ <%=GetMemberVariableName(column)%>=value;}
        }
    <%
    }
    %>
    }
}


<script runat="template">
//自定义方法
public string GetConStructorParameters(TableSchema table)  
{  
    string returnParameters="";  
    foreach(ColumnSchema column in table.Columns)  
    {  
       returnParameters+=GetCSharpVariableType(column)+" "+GetMemberVariableName(column).Substring(1)+",";  
    }  
    return returnParameters.Substring(0,returnParameters.Length-1);  
}
//自定义属性方法
public string GetPascalMemberVariableName(ColumnSchema column)  
{  
    string propertyName = GetPropertyName(column);  
    string memberVariableName = "_" + GetCamelCaseName(propertyName);  
      
    string temp= propertyName.Substring(0,1).ToUpper()+propertyName.Substring(1);  
    return temp;  
} 

public string GetMemberVariableDeclarationStatement(ColumnSchema column)//获取成员变量声明
{
    return GetMemberVariableDeclarationStatement("private", column);
}

public string GetMemberVariableDeclarationStatement(string protectionLevel, ColumnSchema column)
{
    string statement = protectionLevel + " ";//protectionLevel
    statement += GetCSharpVariableType(column) + " " + GetMemberVariableName(column);
    //类型  空格   列名-->字段
    string defaultValue = GetMemberVariableDefaultValue(column);
    if (defaultValue != "")
    {
        statement += " = " + defaultValue;
    }
    
    statement += ";";//加分号
    
    return statement;
}

public string GetReaderAssignmentStatement(ColumnSchema column, int index)
{
    string statement = "if (!reader.IsDBNull(" + index.ToString() + ")) ";
    statement += GetMemberVariableName(column) + " = ";
    
    if (column.Name.EndsWith("TypeCode")) statement += "(" + column.Name + ")";
    
    statement += "reader." + GetReaderMethod(column) + "(" + index.ToString() + ");";
    
    return statement;
}

public string GetCamelCaseName(string value)
{
    return value.Substring(0, 1).ToLower() + value.Substring(1);
}

public string GetMemberVariableName(ColumnSchema column)
{
    string propertyName = GetPropertyName(column);
    string memberVariableName = "_" + GetCamelCaseName(propertyName);
    
    return memberVariableName;
}

public string GetPropertyName(ColumnSchema column)
{
    string propertyName = column.Name;
    
    if (propertyName == column.Table.Name + "Name") return "Name";
    if (propertyName == column.Table.Name + "Description") return "Description";
    
    if (propertyName.EndsWith("TypeCode")) propertyName = propertyName.Substring(0, propertyName.Length - 4);
    
    return propertyName;
}
        
public string GetMemberVariableDefaultValue(ColumnSchema column)
{
    switch (column.DataType)
    {
        case DbType.Guid:
        {
            return "Guid.Empty";
        }
        case DbType.AnsiString:
        case DbType.AnsiStringFixedLength:
        case DbType.String:
        case DbType.StringFixedLength:
        {
            return "String.Empty";
        }
        default:
        {
            return "";
        }
    }
}

public string GetCSharpVariableType(ColumnSchema column)
{
    if (column.Name.EndsWith("TypeCode")) return column.Name;

    return DbTypeCSharp[column.DataType.ToString()];    
}

public string GetReaderMethod(ColumnSchema column)
{
    return DbDataReader[column.DataType.ToString()];
}

public string GetClassName(TableSchema table)//根据字段名获取类名的方法
{
    if (table.Name.EndsWith("s"))
    {
        return table.Name.Substring(0, table.Name.Length - 1);
    }
    else
    {
        return table.Name;
    }
}

public string GetSqlDbType(ColumnSchema column)
{
    return SqlNativeSqlDb[column.NativeType.ToString()];
}

public string GetPrimaryKeyType(TableSchema table)
{
    if (table.PrimaryKey != null)
    {
        if (table.PrimaryKey.MemberColumns.Count == 1)
        {
            return GetCSharpVariableType(table.PrimaryKey.MemberColumns[0]);
        }
        else
        {
            throw new ApplicationException("This template will not work on primary keys with more than one member column.");
        }
    }
    else
    {
        throw new ApplicationException("This template will only work on tables with a primary key.");
    }
}

public override string GetFileName()
{
    return this.GetClassName(this.SourceTable) + ".cs";
}
</script>

Data access layer

<%@ Template Language="C#" TargetLanguage="Text"  Encoding="utf-8"%>
<%@ Property Name="SourceTable" Default="" Type="SchemaExplorer.TableSchema" %>
<%@ Property Name="ProjectName" Type="System.String" Default="eyblog" Optional="False" Category="Strings" Description="this is my blog" %>
<%@ Assembly Name="SchemaExplorer" %>
<%@ Import Namespace="SchemaExplorer"%>


<%@ Map Name="SqlCSharp" Src="Sql-CSharp" Description="System to C# Type Map" %>
<%@ Map Name="DbDataReader" Src="DbType-DataReaderMethod" Description="DbType to DataReader Method Map" %>
<%@ Map Name="SqlNativeSqlDb" Src="SqlNativeType-SqlDbType" Description="SqlNativeType to SqlDbType Map" %>
<%@ Map Name="DbTypeCSharp" Src="DbType-CSharp" Description="DbType to CSharp Map" %>

using System.Collections.Generic;
using System.Data;
using System.SqlClient;
using System;
using <%=ProjectName%>.Model;
using <%=ProjectName%>.DBUtility;
namespace <%=ProjectName%>.DAL
{

    public class <%=GetClassName(SourceTable)%>
    {
        //查询单个数据
        public static <%=GetClassName(SourceTable)%>Entity Select<%=GetClassName(SourceTable)%>Byid(<%=GetCSharpVariableType(SourceTable.PrimaryKey.MemberColumns[0])%> t<%=GetMemberVariableName(SourceTable.PrimaryKey.MemberColumns[0])%>)
        {
        <%=GetClassName(SourceTable)%>Entity t_<%=GetClassName(SourceTable)%>=new <%=GetClassName(SourceTable)%>Entity();
            SqlDataReader sdr=null;
            using(sdr=SqlDBHelp.GetReader("select * from <%=SourceTable.Name%> where <%=SourceTable.PrimaryKey.MemberColumns[0].Name%>="+t<%=GetMemberVariableName(SourceTable.PrimaryKey.MemberColumns[0])%>"))
            {
               if(sde.Reader())
               {
               <%
                int i=0;
               for(i=0;i<SourceTable.Columns.Count;i++)
               {
               %> 
                    t_<%=GetClassName(SourceTable)%>.<%=GetPascalMemberVariableName(SourceTable.Columns[i])%>=(<%=GetCSharpVariableType(SourceTable.Columns[i])%>)sdr.GetValues(<%= i%>);
               <%
               }
               %>
               }
            }
                sdr.Close();
                return   t_<%=GetClassName(SourceTable)%>;
        }
        //查询多条数据
        public Ilist<<%=GetClassName(SourceTable)%>Entity> GetAll<%=GetClassName(SourceTable)%>()
        {
            Ilist<<%=GetClassName(SourceTable)%>Entity> t_<%=GetClassName(SourceTable)%>s=new List<<%=GetClassName(SourceTable)%>Entity>();
            SqlDataReader sdr=null;
            using(sdr=SqlDBHelp.GetReader("select * from <%=SourceTable.Name%>"))
            {
                while(sdr.Reader())
                {
               <%=GetClassName(SourceTable)%>Entity t_<%=GetClassName(SourceTable)%>=new <%=GetClassName(SourceTable)%>Entity();
               <%
               for(i=0;i<SourceTable.Columns.Count;i++)
               {
               %> 
                    t_<%=GetClassName(SourceTable)%>.<%=GetPascalMemberVariableName(SourceTable.Columns[i])%>=(<%=GetCSharpVariableType(SourceTable.Columns[i])%>)sdr.GetValues(<%=i%>);
                    
               <%
               }
               %>
               t_<%=GetClassName(SourceTable)%>s.Add(t_<%=GetClassName(SourceTable)%>);
                }
                sdr.Close();
            }
            return t_<%=GetClassName(SourceTable)%>s;
        }
        //外键查询,几个外键生成几个方法
        <%
        foreach(ColumnSchema column in SourceTable.ForeignKeyColumns)
        {%>
             public Ilist<<%=GetClassName(SourceTable)%>Entity> GetAll<%=GetClassName(SourceTable)%>By<%=column.Name%>(<%=GetCSharpVariableType(column)%> t<%=GetMemberVariableName(column)%>)
             {
                Ilist<<%=GetClassName(SourceTable)%>Entity> t_<%=GetClassName(SourceTable)%>s=new List<<%=GetClassName(SourceTable)%>Entity>();
                SqlDataReader sdr=null;
                using(sdr=SqlDBHelp.GetReader("select * from <%=SourceTable.Name%> where <%=column.Name%>="+t<%=GetMemberVariableName(column)%>))
                {
                     while(sdr.Reader())
                    {
               <%=GetClassName(SourceTable)%>Entity t_<%=GetClassName(SourceTable)%>=new <%=GetClassName(SourceTable)%>Entity();
               <%
               for(i=0;i<SourceTable.Columns.Count;i++)
               {
               %> 
                    t_<%=GetClassName(SourceTable)%>.<%=GetPascalMemberVariableName(SourceTable.Columns[i])%>=(<%=GetCSharpVariableType(SourceTable.Columns[i])%>)sdr.GetValues(<%=i%>);
                    
               <%
               }
               %>
                     t_<%=GetClassName(SourceTable)%>s.Add(t_<%=GetClassName(SourceTable)%>);
                    }
                    sdr.Close();
                }
                return t_<%=GetClassName(SourceTable)%>s;
             }
        <%}
        %>
        //添加数据
        public static int Insert<%=GetClassName(SourceTable)%>(<%=GetClassName(SourceTable)%>Entity T_<%=GetClassName(SourceTable)%>)
        {
            SqlParameter [] p=new SqlParameter[]
            {
            <%
                i=0;
            foreach(ColumnSchema column in SourceTable.Columns)
            {      
                i++;
                if(i!=SourceTable.Columns.Count)
                    {
            %>
                new SqlParameter("@<%=GetPascalMemberVariableName(column)%>",T_<%=GetClassName(SourceTable)%>.<%= GetPascalMemberVariableName(column)%>),
                
            <%
                    }else
                    {
            %>
                new SqlParameter("@<%=GetPascalMemberVariableName(column)%>",T_<%=GetClassName(SourceTable)%>.<%= GetPascalMemberVariableName(column)%>)    
            <%
                    }
            }
            %>
            
            };
          int i=SqlDBHelp.GetExecute("insert into <%=SourceTable.Name%> values(<%=GetColumns(SourceTable)%>)", p);
          return i;
        }
        //修改数据
        public static int Update<%=GetClassName(SourceTable)%>(<%=GetClassName(SourceTable)%>Entity T_<%=GetClassName(SourceTable)%>)
        {
            SqlParameter [] p=new SqlParameter[]
            {
            <%
             i=0;
            foreach(ColumnSchema column in SourceTable.Columns)
            {      
                i++;
                if(i!=SourceTable.Columns.Count)
                    {
            %>
                new SqlParameter("@<%=GetPascalMemberVariableName(column)%>",T_<%=GetClassName(SourceTable)%>.<%= GetPascalMemberVariableName(column)%>),
                
            <%
                    }else
                    {
            %>
                new SqlParameter("@<%=GetPascalMemberVariableName(column)%>",T_<%=GetClassName(SourceTable)%>.<%= GetPascalMemberVariableName(column)%>)    
            <%
                    }
            }
            %>
            };
            int i=SqlDBHelp.GetExecute("update  <%=SourceTable.Name%> set <%=GetUpdateColumns(SourceTable)%>", p);
          return i;
        }
        //删除数据，主键，不考虑联合主键
        public static int Delete<%=GetClassName(SourceTable)%>(<%=GetCSharpVariableType(SourceTable.PrimaryKey.MemberColumns[0])%> t<%=GetMemberVariableName(SourceTable.PrimaryKey.MemberColumns[0])%>)
        {
        int i=SqlDBHelp.GetExecute("delete from <%=SourceTable.Name%> where  <%=SourceTable.PrimaryKey.MemberColumns[0].Name%>="+t<%=GetMemberVariableName(SourceTable.PrimaryKey.MemberColumns[0])%>);
        return i;
        }
    }
}

<script runat="template">
//自定义方法
public string GetPascalMemberVariableName(ColumnSchema column)  
{  
    string propertyName = GetPropertyName(column);  
    string memberVariableName = "_" + GetCamelCaseName(propertyName);  
      
    string temp= propertyName.Substring(0,1).ToUpper()+propertyName.Substring(1);  
    return temp;  
} 
public string GetColumns(TableSchema table)
{
    string temp="";
    foreach(ColumnSchema column in table.Columns)
    {
        temp+="@"+GetPascalMemberVariableName(column)+",";
    }
    return temp.Substring(0,temp.Length-1);
}

public string GetUpdateColumns(TableSchema table)
{
    string temp="";
    foreach(ColumnSchema column in table.NonPrimaryKeyColumns)
    {
        temp+=column.Name+"=@"+GetPascalMemberVariableName(column)+",";
    }
    temp=temp.Substring(0,temp.Length-1);
    //空格是Sql语句控制符
    temp+=" "+"where "+table.PrimaryKey.MemberColumns[0].Name+"="+"@"+GetPascalMemberVariableName(table.PrimaryKey.MemberColumns[0]);
    return temp;
}

//------end
public string GetMemberVariableDeclarationStatement(ColumnSchema column)
{
    return GetMemberVariableDeclarationStatement("private", column);
}

public string GetMemberVariableDeclarationStatement(string protectionLevel, ColumnSchema column)
{
    string statement = protectionLevel + " ";
    statement += GetCSharpVariableType(column) + " " + GetMemberVariableName(column);
    
    string defaultValue = GetMemberVariableDefaultValue(column);
    if (defaultValue != "")
    {
        statement += " = " + defaultValue;
    }
    
    statement += ";";
    
    return statement;
}

public string GetReaderAssignmentStatement(ColumnSchema column, int index)
{
    string statement = "if (!reader.IsDBNull(" + index.ToString() + ")) ";
    statement += GetMemberVariableName(column) + " = ";
    
    if (column.Name.EndsWith("TypeCode")) statement += "(" + column.Name + ")";
    
    statement += "reader." + GetReaderMethod(column) + "(" + index.ToString() + ");";
    
    return statement;
}

public string GetCamelCaseName(string value)
{
    return value.Substring(0, 1).ToLower() + value.Substring(1);
}

public string GetMemberVariableName(ColumnSchema column)
{
    string propertyName = GetPropertyName(column);
    string memberVariableName = "_" + GetCamelCaseName(propertyName);
    
    return memberVariableName;
}

public string GetPropertyName(ColumnSchema column)
{
    string propertyName = column.Name;
    
    if (propertyName == column.Table.Name + "Name") return "Name";
    if (propertyName == column.Table.Name + "Description") return "Description";
    
    if (propertyName.EndsWith("TypeCode")) propertyName = propertyName.Substring(0, propertyName.Length - 4);
    
    return propertyName;
}
        
public string GetMemberVariableDefaultValue(ColumnSchema column)
{
    switch (column.DataType)
    {
        case DbType.Guid:
        {
            return "Guid.Empty";
        }
        case DbType.AnsiString:
        case DbType.AnsiStringFixedLength:
        case DbType.String:
        case DbType.StringFixedLength:
        {
            return "String.Empty";
        }
        default:
        {
            return "";
        }
    }
}

public string GetCSharpVariableType(ColumnSchema column)
{
    if (column.Name.EndsWith("TypeCode")) return column.Name;

    return DbTypeCSharp[column.DataType.ToString()];    
}

public string GetReaderMethod(ColumnSchema column)
{
    return DbDataReader[column.DataType.ToString()];
}

public string GetClassName(TableSchema table)
{
    if (table.Name.EndsWith("s"))
    {
        return table.Name.Substring(0, table.Name.Length - 1);
    }
    else
    {
        return table.Name;
    }
}

public string GetSqlDbType(ColumnSchema column)
{
    return SqlNativeSqlDb[column.NativeType.ToString()];
}

public string GetPrimaryKeyType(TableSchema table)
{
    if (table.PrimaryKey != null)
    {
        if (table.PrimaryKey.MemberColumns.Count == 1)
        {
            return GetCSharpVariableType(table.PrimaryKey.MemberColumns[0]);
        }
        else
        {
            throw new ApplicationException("This template will not work on primary keys with more than one member column.");
        }
    }
    else
    {
        throw new ApplicationException("This template will only work on tables with a primary key.");
    }
}

public override string GetFileName()
{
    return this.GetClassName(this.SourceTable) + ".cs";
}
</script>