NFine框架的T4模板
1.前言
前段时间在网上看到一个开源框架很好的。开源：ASP.NET MVC+EF6+Bootstrap开发框架，写代码就是比较比较麻烦，分层比较多，对于我这种偷懒的人就想到了写一个T4模板。不了解框架的可以先去看一下这个开源的框架。
一起有5个层，也就是意味着每次数据库添加一张表，就需要写这5个类。
2.NFine.Domain.Entity
<#@ template debug="false" hostspecific="false" language="C#" #>
<#@ output extension=".cs" #>
<#@ assembly name="System.Core.dll" #>
<#@ assembly name="System.Data.dll" #>
<#@ assembly name="System.Data.DataSetExtensions.dll" #>
<#@ assembly name="System.Xml.dll" #>
<#@ import namespace="System" #>
<#@ import namespace="System.Xml" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Data" #>
<#@ import namespace="System.Data.SqlClient" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.IO" #>
<#@ include file="$(ProjectDir)DbHelper.ttinclude" #> //------------------------------------------------------------------------------
// <博客园-枫伶忆 http://www.cnblogs.com/fenglingyi/>
// 此代码由T4模板自动生成
// 生成时间 <#=DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")#> by 枫伶忆
// 对此文件的更改可能会导致不正确的行为，并且如果重新生成代码，这些更改将会丢失。
// QQ:549387177
// <博客园-枫伶忆 http://www.cnblogs.com/fenglingyi/>
//------------------------------------------------------------------------------
<#
var tableName=config.TableName.Replace("Sys_","")+"Entity"; #> using System;
namespace NFine.Domain.Entity.SystemManage
{
/// <summary>
/// <#=tableName#>
/// </summary>
public class <#=tableName#>:IEntity<<#=tableName#>>, ICreationAudited, IDeleteAudited, IModificationAudited
{
<# foreach(DbColumn column in DbHelper.GetDbColumns(config.ConnectionString, config.DbDatabase, config.TableName)){#>
public <#= column.CSharpType#><# if(column.CommonType.IsValueType && column.IsNullable){#>?<#}#> <#=column.ColumnName#> { get; set; }
<#}#>
}
}
3.NFine.Domain.IRepository
<#@ template debug="false" hostspecific="false" language="C#" #>
<#@ output extension=".cs" #>
<#@ assembly name="System.Core.dll" #>
<#@ assembly name="System.Data.dll" #>
<#@ assembly name="System.Data.DataSetExtensions.dll" #>
<#@ assembly name="System.Xml.dll" #>
<#@ import namespace="System" #>
<#@ import namespace="System.Xml" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Data" #>
<#@ import namespace="System.Data.SqlClient" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.IO" #>
<#@ include file="$(ProjectDir)DbHelper.ttinclude" #>
//------------------------------------------------------------------------------
// <博客园-枫伶忆 http://www.cnblogs.com/fenglingyi/>
// 此代码由T4模板自动生成
// 生成时间 <#=DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")#> by 枫伶忆
// 对此文件的更改可能会导致不正确的行为，并且如果重新生成代码，这些更改将会丢失。
// QQ:549387177
// <博客园-枫伶忆 http://www.cnblogs.com/fenglingyi/>
//------------------------------------------------------------------------------
<#
var tableName=config.TableName.Replace("Sys_","")+"Repository";
var entity=config.TableName.Replace("Sys_","")+"Entity";
#>
using NFine.Data;
using NFine.Domain.Entity.SystemManage;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks; namespace NFine.Domain.IRepository.SystemManage
{
/// <summary>
/// <#=tableName#>
/// </summary>
public interface I<#=tableName#>:IRepositoryBase<<#=entity#>>
{ }
}
4.NFine.Repository
<#@ template debug="false" hostspecific="false" language="C#" #>
<#@ output extension=".cs" #>
<#@ assembly name="System.Core.dll" #>
<#@ assembly name="System.Data.dll" #>
<#@ assembly name="System.Data.DataSetExtensions.dll" #>
<#@ assembly name="System.Xml.dll" #>
<#@ import namespace="System" #>
<#@ import namespace="System.Xml" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Data" #>
<#@ import namespace="System.Data.SqlClient" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.IO" #>
<#@ include file="$(ProjectDir)DbHelper.ttinclude" #>
//------------------------------------------------------------------------------
// <博客园-枫伶忆 http://www.cnblogs.com/fenglingyi/>
// 此代码由T4模板自动生成
// 生成时间 <#=DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")#> by 枫伶忆
// 对此文件的更改可能会导致不正确的行为，并且如果重新生成代码，这些更改将会丢失。
// QQ:549387177
// <博客园-枫伶忆 http://www.cnblogs.com/fenglingyi/>
//------------------------------------------------------------------------------
<#
var tableName=config.TableName.Replace("Sys_","")+"Repository";
var entity=config.TableName.Replace("Sys_","")+"Entity";
#>
using NFine.Data;
using NFine.Domain.Entity.SystemManage;
using NFine.Domain.IRepository.SystemManage;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks; namespace NFine.Repository.SystemManage
{
/// <summary>
/// <#=tableName#>
/// </summary>
public class <#=tableName#>:RepositoryBase<<#=entity#>>,I<#=tableName#>
{ }
}
5.NFine.Mapping
<#@ template debug="false" hostspecific="false" language="C#" #>
<#@ output extension=".cs" #>
<#@ assembly name="System.Core.dll" #>
<#@ assembly name="System.Data.dll" #>
<#@ assembly name="System.Data.DataSetExtensions.dll" #>
<#@ assembly name="System.Xml.dll" #>
<#@ import namespace="System" #>
<#@ import namespace="System.Xml" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Data" #>
<#@ import namespace="System.Data.SqlClient" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.IO" #>
<#@ include file="$(ProjectDir)DbHelper.ttinclude" #>
//------------------------------------------------------------------------------
// <博客园-枫伶忆 http://www.cnblogs.com/fenglingyi/>
// 此代码由T4模板自动生成
// 生成时间 <#=DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")#> by 枫伶忆
// 对此文件的更改可能会导致不正确的行为，并且如果重新生成代码，这些更改将会丢失。
// QQ:549387177
// <博客园-枫伶忆 http://www.cnblogs.com/fenglingyi/>
//------------------------------------------------------------------------------
<#
var dbTableName=config.TableName;
var tableName=config.TableName.Replace("Sys_","")+"Map";
var entity=config.TableName.Replace("Sys_","")+"Entity";
var list= DbHelper.GetDbColumns(config.ConnectionString, config.DbDatabase, config.TableName);
var pk = DbHelper.GetPrimaryKey(list);
#>
using NFine.Domain.Entity.SystemManage;
using System.Data.Entity.ModelConfiguration;
namespace NFine.Mapping.SystemManage
{
/// <summary>
/// <#=tableName#>
/// </summary>
public class <#=tableName#>:EntityTypeConfiguration<<#=entity#>>
{
public <#=tableName#>()
{
this.ToTable("<#=dbTableName#>");
this.HasKey(t=>t.<#=pk#>);
}
}
}
6.NFine.Application
<#@ template debug="false" hostspecific="false" language="C#" #>
<#@ output extension=".cs" #>
<#@ assembly name="System.Core.dll" #>
<#@ assembly name="System.Data.dll" #>
<#@ assembly name="System.Data.DataSetExtensions.dll" #>
<#@ assembly name="System.Xml.dll" #>
<#@ import namespace="System" #>
<#@ import namespace="System.Xml" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Data" #>
<#@ import namespace="System.Data.SqlClient" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.IO" #>
<#@ include file="$(ProjectDir)DbHelper.ttinclude" #>
//------------------------------------------------------------------------------
// <博客园-枫伶忆 http://www.cnblogs.com/fenglingyi/>
// 此代码由T4模板自动生成
// 生成时间 <#=DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")#> by 枫伶忆
// 对此文件的更改可能会导致不正确的行为，并且如果重新生成代码，这些更改将会丢失。
// QQ:549387177
// <博客园-枫伶忆 http://www.cnblogs.com/fenglingyi/>
//------------------------------------------------------------------------------
<#
var tableName=config.TableName.Replace("Sys_","")+"App";
var entity=config.TableName.Replace("Sys_","")+"Entity";
var repository=config.TableName.Replace("Sys_","")+"Repository";
#>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NFine.Domain.Entity.SystemManage;
using NFine.Domain.IRepository.SystemManage;
using NFine.Repository.SystemManage;
namespace NFine.Application.SystemManage
{
/// <summary>
/// <#=tableName#>
/// </summary>
public class <#=tableName#>
{
private I<#=repository#> service=new <#=repository#>(); public List<<#=entity#>> GetList()
{
return service.IQueryable().ToList();
} public <#=entity#> GetForm(string keyValue)
{
return service.FindEntity(keyValue);
} public void Delete(<#=entity#> entity)
{
service.Delete(entity);
} public void SubmitForm(<#=entity#> entity, string keyValue)
{
if (!string.IsNullOrEmpty(keyValue))
{
entity.Modify(keyValue);
service.Update(entity);
}
else
{
entity.Create();
service.Insert(entity);
}
} }
}
7.DbHelper.ttinclude
核心的帮助类
<#+
public class DbHelper
{
#region GetDbTables public static List<DbTable> GetDbTables(string connectionString, string database, string tables = null)
{ if (!string.IsNullOrEmpty(tables))
{
tables = string.Format(" and obj.name in ('{0}')", tables.Replace(",", "','"));
}
#region SQL
string sql = string.Format(@"SELECT
obj.name tablename,
schem.name schemname,
idx.rows,
CAST
(
CASE
WHEN (SELECT COUNT(1) FROM sys.indexes WHERE object_id= obj.OBJECT_ID AND is_primary_key=1) >=1 THEN 1
ELSE 0
END
AS BIT) HasPrimaryKey
from {0}.sys.objects obj
inner join {0}.dbo.sysindexes idx on obj.object_id=idx.id and idx.indid<=1
INNER JOIN {0}.sys.schemas schem ON obj.schema_id=schem.schema_id
where type='U' {1}
order by obj.name", database, tables);
#endregion
DataTable dt = GetDataTable(connectionString, sql);
return dt.Rows.Cast<DataRow>().Select(row => new DbTable
{
TableName = row.Field<string>("tablename"),
SchemaName = row.Field<string>("schemname"),
Rows = row.Field<int>("rows"),
HasPrimaryKey = row.Field<bool>("HasPrimaryKey")
}).ToList();
}
#endregion #region GetDbColumns public static List<DbColumn> GetDbColumns(string connectionString, string database, string tableName, string schema = "dbo")
{
#region SQL
string sql = string.Format(@"
WITH indexCTE AS
(
SELECT
ic.column_id,
ic.index_column_id,
ic.object_id
FROM {0}.sys.indexes idx
INNER JOIN {0}.sys.index_columns ic ON idx.index_id = ic.index_id AND idx.object_id = ic.object_id
WHERE idx.object_id =OBJECT_ID(@tableName) AND idx.is_primary_key=1
)
select
colm.column_id ColumnID,
CAST(CASE WHEN indexCTE.column_id IS NULL THEN 0 ELSE 1 END AS BIT) IsPrimaryKey,
colm.name ColumnName,
systype.name ColumnType,
colm.is_identity IsIdentity,
colm.is_nullable IsNullable,
cast(colm.max_length as int) ByteLength,
(
case
when systype.name='nvarchar' and colm.max_length>0 then colm.max_length/2
when systype.name='nchar' and colm.max_length>0 then colm.max_length/2
when systype.name='ntext' and colm.max_length>0 then colm.max_length/2
else colm.max_length
end
) CharLength,
cast(colm.precision as int) Precision,
cast(colm.scale as int) Scale,
prop.value Remark
from {0}.sys.columns colm
inner join {0}.sys.types systype on colm.system_type_id=systype.system_type_id and colm.user_type_id=systype.user_type_id
left join {0}.sys.extended_properties prop on colm.object_id=prop.major_id and colm.column_id=prop.minor_id
LEFT JOIN indexCTE ON colm.column_id=indexCTE.column_id AND colm.object_id=indexCTE.object_id
where colm.object_id=OBJECT_ID(@tableName)
order by colm.column_id", database);
#endregion
SqlParameter param = new SqlParameter("@tableName", SqlDbType.NVarChar, ) { Value = string.Format("{0}.{1}.{2}", database, schema, tableName) };
DataTable dt = GetDataTable(connectionString, sql, param);
return dt.Rows.Cast<DataRow>().Select(row => new DbColumn()
{
ColumnID = row.Field<int>("ColumnID"),
IsPrimaryKey = row.Field<bool>("IsPrimaryKey"),
ColumnName = row.Field<string>("ColumnName"),
ColumnType = row.Field<string>("ColumnType"),
IsIdentity = row.Field<bool>("IsIdentity"),
IsNullable = row.Field<bool>("IsNullable"),
ByteLength = row.Field<int>("ByteLength"),
CharLength = row.Field<int>("CharLength"),
Scale = row.Field<int>("Scale"),
Remark = row["Remark"].ToString()
}).ToList();
} #endregion #region GetDataTable public static DataTable GetDataTable(string connectionString, string commandText, params SqlParameter[] parms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand command = connection.CreateCommand();
command.CommandText = commandText;
command.Parameters.AddRange(parms);
SqlDataAdapter adapter = new SqlDataAdapter(command); DataTable dt = new DataTable();
adapter.Fill(dt); return dt;
}
} #endregion #region GetPrimaryKey
public static string GetPrimaryKey(List<DbColumn> dbColumns)
{
string primaryKey = string.Empty;
if (dbColumns!=null&&dbColumns.Count>)
{
foreach (var item in dbColumns)
{
if (item.IsPrimaryKey==true)
{
primaryKey = item.ColumnName;
}
}
}
return primaryKey;
}
#endregion
} #region DbTable
/// <summary>
/// 表结构
/// </summary>
public sealed class DbTable
{
/// <summary>
/// 表名称
/// </summary>
public string TableName { get; set; }
/// <summary>
/// 表的架构
/// </summary>
public string SchemaName { get; set; }
/// <summary>
/// 表的记录数
/// </summary>
public int Rows { get; set; } /// <summary>
/// 是否含有主键
/// </summary>
public bool HasPrimaryKey { get; set; }
}
#endregion #region DbColumn
/// <summary>
/// 表字段结构
/// </summary>
public sealed class DbColumn
{
/// <summary>
/// 字段ID
/// </summary>
public int ColumnID { get; set; } /// <summary>
/// 是否主键
/// </summary>
public bool IsPrimaryKey { get; set; } /// <summary>
/// 字段名称
/// </summary>
public string ColumnName { get; set; } /// <summary>
/// 字段类型
/// </summary>
public string ColumnType { get; set; } /// <summary>
/// 数据库类型对应的C#类型
/// </summary>
public string CSharpType
{
get
{
return SqlServerDbTypeMap.MapCsharpType(ColumnType);
}
} /// <summary>
///
/// </summary>
public Type CommonType
{
get
{
return SqlServerDbTypeMap.MapCommonType(ColumnType);
}
} /// <summary>
/// 字节长度
/// </summary>
public int ByteLength { get; set; } /// <summary>
/// 字符长度
/// </summary>
public int CharLength { get; set; } /// <summary>
/// 小数位
/// </summary>
public int Scale { get; set; } /// <summary>
/// 是否自增列
/// </summary>
public bool IsIdentity { get; set; } /// <summary>
/// 是否允许空
/// </summary>
public bool IsNullable { get; set; } /// <summary>
/// 描述
/// </summary>
public string Remark { get; set; }
}
#endregion #region SqlServerDbTypeMap public class SqlServerDbTypeMap
{
public static string MapCsharpType(string dbtype)
{
if (string.IsNullOrEmpty(dbtype)) return dbtype;
dbtype = dbtype.ToLower();
string csharpType = "object";
switch (dbtype)
{
case "bigint": csharpType = "long"; break;
case "binary": csharpType = "byte[]"; break;
case "bit": csharpType = "bool"; break;
case "char": csharpType = "string"; break;
case "date": csharpType = "DateTime"; break;
case "datetime": csharpType = "DateTime"; break;
case "datetime2": csharpType = "DateTime"; break;
case "datetimeoffset": csharpType = "DateTimeOffset"; break;
case "decimal": csharpType = "decimal"; break;
case "float": csharpType = "double"; break;
case "image": csharpType = "byte[]"; break;
case "int": csharpType = "int"; break;
case "money": csharpType = "decimal"; break;
case "nchar": csharpType = "string"; break;
case "ntext": csharpType = "string"; break;
case "numeric": csharpType = "decimal"; break;
case "nvarchar": csharpType = "string"; break;
case "real": csharpType = "Single"; break;
case "smalldatetime": csharpType = "DateTime"; break;
case "smallint": csharpType = "short"; break;
case "smallmoney": csharpType = "decimal"; break;
case "sql_variant": csharpType = "object"; break;
case "sysname": csharpType = "object"; break;
case "text": csharpType = "string"; break;
case "time": csharpType = "TimeSpan"; break;
case "timestamp": csharpType = "byte[]"; break;
case "tinyint": csharpType = "byte"; break;
case "uniqueidentifier": csharpType = "Guid"; break;
case "varbinary": csharpType = "byte[]"; break;
case "varchar": csharpType = "string"; break;
case "xml": csharpType = "string"; break;
default: csharpType = "object"; break;
}
return csharpType;
} public static Type MapCommonType(string dbtype)
{
if (string.IsNullOrEmpty(dbtype)) return Type.Missing.GetType();
dbtype = dbtype.ToLower();
Type commonType = typeof(object);
switch (dbtype)
{
case "bigint": commonType = typeof(long); break;
case "binary": commonType = typeof(byte[]); break;
case "bit": commonType = typeof(bool); break;
case "char": commonType = typeof(string); break;
case "date": commonType = typeof(DateTime); break;
case "datetime": commonType = typeof(DateTime); break;
case "datetime2": commonType = typeof(DateTime); break;
case "datetimeoffset": commonType = typeof(DateTimeOffset); break;
case "decimal": commonType = typeof(decimal); break;
case "float": commonType = typeof(double); break;
case "image": commonType = typeof(byte[]); break;
case "int": commonType = typeof(int); break;
case "money": commonType = typeof(decimal); break;
case "nchar": commonType = typeof(string); break;
case "ntext": commonType = typeof(string); break;
case "numeric": commonType = typeof(decimal); break;
case "nvarchar": commonType = typeof(string); break;
case "real": commonType = typeof(Single); break;
case "smalldatetime": commonType = typeof(DateTime); break;
case "smallint": commonType = typeof(short); break;
case "smallmoney": commonType = typeof(decimal); break;
case "sql_variant": commonType = typeof(object); break;
case "sysname": commonType = typeof(object); break;
case "text": commonType = typeof(string); break;
case "time": commonType = typeof(TimeSpan); break;
case "timestamp": commonType = typeof(byte[]); break;
case "tinyint": commonType = typeof(byte); break;
case "uniqueidentifier": commonType = typeof(Guid); break;
case "varbinary": commonType = typeof(byte[]); break;
case "varchar": commonType = typeof(string); break;
case "xml": commonType = typeof(string); break;
default: commonType = typeof(object); break;
}
return commonType;
}
}
#endregion
#> <#+
public class config
{
public static readonly string ConnectionString = "Data Source=(local);Initial Catalog=NFineBase;User ID=sa;Password=hjf19870810;";
public static readonly string DbDatabase = "NFineBase";
public static readonly string TableName = "Sys_Test";
}
#>
8.ModelAuto.ttinclude
用来生成多个单独的类文件。
<#@ assembly name="System.Core"#>
<#@ assembly name="EnvDTE"#>
<#@ import namespace="System.Collections.Generic"#>
<#@ import namespace="System.IO"#>
<#@ import namespace="System.Text"#>
<#@ import namespace="Microsoft.VisualStudio.TextTemplating"#> <#+ class Manager
{
public struct Block {
public String Name;
public int Start, Length;
} public List<Block> blocks = new List<Block>();
public Block currentBlock;
public Block footerBlock = new Block();
public Block headerBlock = new Block();
public ITextTemplatingEngineHost host;
public ManagementStrategy strategy;
public StringBuilder template;
public String OutputPath { get; set; } public Manager(ITextTemplatingEngineHost host, StringBuilder template, bool commonHeader) {
this.host = host;
this.template = template;
OutputPath = String.Empty;
strategy = ManagementStrategy.Create(host);
} public void StartBlock(String name) {
currentBlock = new Block { Name = name, Start = template.Length };
} public void StartFooter() {
footerBlock.Start = template.Length;
} public void EndFooter() {
footerBlock.Length = template.Length - footerBlock.Start;
} public void StartHeader() {
headerBlock.Start = template.Length;
} public void EndHeader() {
headerBlock.Length = template.Length - headerBlock.Start;
} public void EndBlock() {
currentBlock.Length = template.Length - currentBlock.Start;
blocks.Add(currentBlock);
} public void Process(bool split) {
String header = template.ToString(headerBlock.Start, headerBlock.Length);
String footer = template.ToString(footerBlock.Start, footerBlock.Length);
blocks.Reverse();
foreach(Block block in blocks) {
String fileName = Path.Combine(OutputPath, block.Name);
if (split) {
String content = header + template.ToString(block.Start, block.Length) + footer;
strategy.CreateFile(fileName, content);
template.Remove(block.Start, block.Length);
} else {
strategy.DeleteFile(fileName);
}
}
}
} class ManagementStrategy
{
internal static ManagementStrategy Create(ITextTemplatingEngineHost host) {
return (host is IServiceProvider) ? new VSManagementStrategy(host) : new ManagementStrategy(host);
} internal ManagementStrategy(ITextTemplatingEngineHost host) { } internal virtual void CreateFile(String fileName, String content) {
File.WriteAllText(fileName, content);
} internal virtual void DeleteFile(String fileName) {
if (File.Exists(fileName))
File.Delete(fileName);
}
} class VSManagementStrategy : ManagementStrategy
{
private EnvDTE.ProjectItem templateProjectItem; internal VSManagementStrategy(ITextTemplatingEngineHost host) : base(host) {
IServiceProvider hostServiceProvider = (IServiceProvider)host;
if (hostServiceProvider == null)
throw new ArgumentNullException("Could not obtain hostServiceProvider"); EnvDTE.DTE dte = (EnvDTE.DTE)hostServiceProvider.GetService(typeof(EnvDTE.DTE));
if (dte == null)
throw new ArgumentNullException("Could not obtain DTE from host"); templateProjectItem = dte.Solution.FindProjectItem(host.TemplateFile);
} internal override void CreateFile(String fileName, String content) {
base.CreateFile(fileName, content);
((EventHandler)delegate { templateProjectItem.ProjectItems.AddFromFile(fileName); }).BeginInvoke(null, null, null, null);
} internal override void DeleteFile(String fileName) {
((EventHandler)delegate { FindAndDeleteFile(fileName); }).BeginInvoke(null, null, null, null);
} private void FindAndDeleteFile(String fileName) {
foreach(EnvDTE.ProjectItem projectItem in templateProjectItem.ProjectItems) {
if (projectItem.get_FileNames() == fileName) {
projectItem.Delete();
return;
}
}
}
}#>
模板在此下载。
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