lyfz_repos/经典版源码/document/动软模板/简单三层模板/DAL.cmt

<#@ template language="c#" HostSpecific="True" #>
<#@ output extension= ".cs" #>
<#
	TableHost host = (TableHost)(Host);	
	string DbParaHead=host.DbParaHead;
	string DbParaDbType=host.DbParaDbType;
	string preParameter=host.preParameter;
	string ModelSpace = host.NameSpace+".Model."+ host.GetModelClass(host.TableName);
	ColumnInfo identityKey=host.IdentityKey;
	string returnValue = "void";
    if (identityKey!=null)
    {         
         returnValue = CodeCommon.DbTypeToCS(identityKey.TypeName);              
    }
#>
using System; 
using System.Text;
using System.Data.SqlClient;
using System.Collections.Generic; 
using System.Data;
using Maticsoft.DBUtility;
namespace <#= host.NameSpace #>.DAL  
<# if( host.Folder.Length > 0){ #>
	.<#= host.Folder #>
<# } #>
{
	<# if( host.TableDescription.Length > 0) {#>
 	//<#= host.TableDescription #>
	<# } #>
	public partial class <#= host.GetDALClass(host.TableName) #>
	{
   		     
		public bool Exists(<#= CodeCommon.GetInParameter(host.Keys, false) #>)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select count(1) from <#= host.TableName #>");
			strSql.Append(" where ");
			<# for(int i=0;i< host.Keys.Count;i++)
            {   ColumnInfo key = host.Keys[i]; #>
                <# if (key.IsPrimaryKey || !key.IsIdentity)
                {#>
                       strSql.Append(" <#= key.ColumnName#> = <#=preParameter#><#=key.ColumnName#> <# if (i< host.Keys.Count-1 ) {#>and <#}#> ");
                <#}#>
            <# }#>
<#= CodeCommon.GetPreParameter(host.Keys, false, host.DbType) #>
			return <#= host.DbHelperName#>.Exists(strSql.ToString(),parameters);
		}
		
				
		
		/// <summary>
		/// 增加一条数据
		/// </summary>
		public <#= returnValue #> Add(<#= ModelSpace #> model)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("insert into <#= host.TableName #>(");			
            strSql.Append("<# for(int i=0;i< host.Fieldlist.Count;i++) {   ColumnInfo c = host.Fieldlist[i]; if (!c.IsIdentity) {#><#= c.ColumnName#><# if (i< host.Fieldlist.Count-1 ) {#>,<#}#><#}}#>");
			strSql.Append(") values (");
            strSql.Append("<# for(int i=0;i< host.Fieldlist.Count;i++) {   ColumnInfo c = host.Fieldlist[i]; if (!c.IsIdentity) {#><#=preParameter#><#= c.ColumnName#><# if (i< host.Fieldlist.Count-1 ) {#>,<#}#><#}}#>");            
            strSql.Append(") ");            
            <#if (identityKey!=null) {#>strSql.Append(";select @@IDENTITY");<#}#>		
			SqlParameter[] parameters = {
			<# for(int i=0;i< host.Fieldlist.Count;i++)
            {   
            ColumnInfo c = host.Fieldlist[i];
            if(c.IsIdentity) continue;
            #>
            new SqlParameter("<#=preParameter#><#=c.ColumnName#>", SqlDbType.<#=CodeCommon.DbTypeLength(host.DbType, c.TypeName, c.Length)#>) <# if (i< host.Fieldlist.Count-1 ) {#>,<#}#>            
            <# }#>  
            };
			<# foreach (ColumnInfo c in host.Fieldlist) { if(c.IsIdentity) continue;#>            
            parameters[<#= n #>].Value = <# if ("uniqueidentifier" == c.TypeName.ToLower()){#>Guid.NewGuid();<#} else {#>model.<#=c.ColumnName#>;<#} n=n+1; #>
            <# }#>
            
			<#if (identityKey!=null) {#>   
			object obj = <#= host.DbHelperName#>.GetSingle(strSql.ToString(),parameters);			
			if (obj == null)
			{
				return 0;
			}
			else
			{
				<# if ( returnValue=="int" ) 
				{#>                    
            	return Convert.ToInt32(obj);
                <#}#>
                <# if ( returnValue=="long" ) 
				{#>                    
            	return Convert.ToInt64(obj);
                <#}#>
                <# if ( returnValue=="decimal" ) 
				{#>                    
            	return Convert.ToDecimal(obj);
                <#}#>                  
			}			   
            <#} else {#>
            <#= host.DbHelperName#>.ExecuteSql(strSql.ToString(),parameters);
            <#}#>			
		}
		
		
		/// <summary>
		/// 更新一条数据
		/// </summary>
		public bool Update(<#= ModelSpace #> model)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("update <#= host.TableName #> set ");
			<# for(int i=0;i< host.Fieldlist.Count;i++)
            {   ColumnInfo c = host.Fieldlist[i]; #>
            <# if (!c.IsIdentity) {#>            
            strSql.Append(" <#= c.ColumnName #> = <#=preParameter#><#=c.ColumnName#> <# if (i< host.Fieldlist.Count-1 ) {#>,<#}#> ");<# }#>
            <# }#>			
			strSql.Append(" where <#= CodeCommon.GetWhereParameterExpression(host.Keys, true ,host.DbType) #> ");
						
SqlParameter[] parameters = {
			<# for(int i=0;i< host.Fieldlist.Count;i++)
            {   ColumnInfo c = host.Fieldlist[i]; #>
            new SqlParameter("<#=preParameter#><#=c.ColumnName#>", SqlDbType.<#=CodeCommon.DbTypeLength(host.DbType, c.TypeName, c.Length)#>) <# if (i< host.Fieldlist.Count-1 ) {#>,<#}#>
            
            <# }#>  
            };
			<# n=0; #>
			<# foreach (ColumnInfo c in host.Fieldlist) { #>            
            parameters[<#= n #>].Value = model.<#=c.ColumnName#>;<# n=n+1; #>
            <# }#>
            
            int rows=<#= host.DbHelperName#>.ExecuteSql(strSql.ToString(),parameters);
			if (rows > 0)
			{
				return true;
			}
			else
			{
				return false;
			}
		}
		
		
		/// <summary>
		/// 删除一条数据
		/// </summary>
		public bool Delete(<#=CodeCommon.GetInParameter(host.Keys, true)#>)
		{
			
			StringBuilder strSql=new StringBuilder();
			strSql.Append("delete from <#= host.TableName #> ");
			strSql.Append(" where <#= CodeCommon.GetWhereParameterExpression(host.Keys, true, host.DbType)#>");
			<#= CodeCommon.GetPreParameter(host.Keys, true, host.DbType) #>

			int rows=<#= host.DbHelperName#>.ExecuteSql(strSql.ToString(),parameters);
			if (rows > 0)
			{
				return true;
			}
			else
			{
				return false;
			}
		}
		
		<#if (identityKey!=null) {#>
		/// <summary>
		/// 批量删除一批数据
		/// </summary>
		public bool DeleteList(string <#=identityKey.ColumnName#>list )
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("delete from <#= host.TableName #> ");
			strSql.Append(" where ID in ("+<#=identityKey.ColumnName#>list + ")  ");
			int rows=<#= host.DbHelperName#>.ExecuteSql(strSql.ToString());
			if (rows > 0)
			{
				return true;
			}
			else
			{
				return false;
			}
		}
		<#}#>
		
		
		/// <summary>
		/// 得到一个对象实体
		/// </summary>
		public <#= ModelSpace #> GetModel(<#= CodeCommon.GetInParameter(host.Keys,true) #>)
		{
			
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select <# for(int i=0;i< host.Fieldlist.Count;i++) { #><#= host.Fieldlist[i].ColumnName #><# if(i< host.Fieldlist.Count-1 ) {#>,<# } #> <#}#> ");			
			strSql.Append("  from <#= host.TableName #> ");
			strSql.Append(" where <#= CodeCommon.GetWhereParameterExpression(host.Keys, true, host.DbType) #>");
			<#=CodeCommon.GetPreParameter(host.Keys, true, host.DbType)#>
			
			<#=ModelSpace#> model=new <#=ModelSpace#>();
			DataSet ds=<#= host.DbHelperName#>.Query(strSql.ToString(),parameters);
			
			if(ds.Tables[0].Rows.Count>0)
			{
				<# foreach (ColumnInfo c in host.Fieldlist) { #>
				<# if(CodeCommon.DbTypeToCS(c.TypeName)=="int"||
				CodeCommon.DbTypeToCS(c.TypeName)=="long"||
				CodeCommon.DbTypeToCS(c.TypeName)=="float"||
				CodeCommon.DbTypeToCS(c.TypeName)=="DateTime"||
				CodeCommon.DbTypeToCS(c.TypeName)=="decimal")
				{#>
				if(ds.Tables[0].Rows[0]["<#=c.ColumnName#>"].ToString()!="")
				{
					model.<#=c.ColumnName#>=<#=CodeCommon.DbTypeToCS(c.TypeName)#>.Parse(ds.Tables[0].Rows[0]["<#=c.ColumnName#>"].ToString());
				}
				<# } #>
				<# if(CodeCommon.DbTypeToCS(c.TypeName)=="string") {#>
				model.<#=c.ColumnName#>= ds.Tables[0].Rows[0]["<#=c.ColumnName#>"].ToString();
				<# } #>
				<# if(CodeCommon.DbTypeToCS(c.TypeName)=="byte[]") {#>
				if(ds.Tables[0].Rows[0]["<#=c.ColumnName#>"].ToString()!="")
				{
					model.<#=c.ColumnName#>= (byte[])ds.Tables[0].Rows[0]["<#=c.ColumnName#>"];
				}
				<# } #>
				<# if(CodeCommon.DbTypeToCS(c.TypeName)=="Guid") {#>
				if(ds.Tables[0].Rows[0]["<#=c.ColumnName#>"].ToString()!="")
				{
					model.<#=c.ColumnName#>= ds.Tables[0].Rows[0]["<#=c.ColumnName#>"].ToString();
				}
				<# } #>
				<# if(CodeCommon.DbTypeToCS(c.TypeName)=="bool") {#>
				if(ds.Tables[0].Rows[0]["<#=c.ColumnName#>"].ToString()!="")
				{
					if((ds.Tables[0].Rows[0]["<#=c.ColumnName#>"].ToString()=="1")||(ds.Tables[0].Rows[0]["<#=c.ColumnName#>"].ToString().ToLower()=="true"))
					{
					model.<#=c.ColumnName#>= true;
					}
					else
					{
					model.<#=c.ColumnName#>= false;
					}
				}
				<# } #>
				<# } #>						
				return model;
			}
			else
			{
				return null;
			}
		}
		
		
		/// <summary>
		/// 获得数据列表
		/// </summary>
		public DataSet GetList(string strWhere)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select * ");
			strSql.Append(" FROM <#= host.TableName #> ");
			if(strWhere.Trim()!="")
			{
				strSql.Append(" where "+strWhere);
			}
			return <#= host.DbHelperName#>.Query(strSql.ToString());
		}
		
		/// <summary>
		/// 获得前几行数据
		/// </summary>
		public DataSet GetList(int Top,string strWhere,string filedOrder)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select ");
			if(Top>0)
			{
				strSql.Append(" top "+Top.ToString());
			}
			strSql.Append(" * ");
			strSql.Append(" FROM <#= host.TableName #> ");
			if(strWhere.Trim()!="")
			{
				strSql.Append(" where "+strWhere);
			}
			strSql.Append(" order by " + filedOrder);
			return <#= host.DbHelperName#>.Query(strSql.ToString());
		}

   
	}
}

<#+
int n=0;
#>