MVC使用T4模板生成其他类的具体实现学习笔记2

2024-07-10 13:31:24

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在前篇中我们已经将User类中的代码做了具体的实现，但仍然有多个实体类未实现，以后可能还会增加新的数据表，数据表结构也有可能发生变化，所以我们使用T4模板来完成类的生成，这样就算数据库表发生了改变，也会自动根据改变后的实体对类进行重新生成。

下面是数据访问层的T4模板文件 Dal.tt

<#@ 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);//EF实体文件在项目中的路径string inputFile = @"..//PMS.Model//PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection(inputFile);string namespaceName = code.VsNamespaceSuggestion();EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create(this);#><#//这里为命名空间部分，手动更改为相应的命名空间 #>using PMS.IDAL;using PMS.Model;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace PMS.DAL{<#// Emit Entity Typesforeach (EntityType entity in ItemCollection.GetItems<EntityType>().OrderBy(e => e.Name)){  //fileManager.StartNewFile(entity.Name + "RepositoryExt.cs");  //BeginNamespace(namespaceName, code);  #>      public partial class <#=entity.Name#>Dal :BaseDal<<#=entity.Name#>>,I<#=entity.Name#>Dal  {  }<#}#>  }

我们将EF实体文件路径、命名空间更改为对应的值时，Ctrl+S保存，即可生成对应的其他类型的数据访问类

其他层中也大同小异，只需要做对应的更改即可，下面我将提供相应的代码

IDAL层

IDal.tt

<#@ 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 = @"..//PMS.Model//PMS.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;using System.Threading.Tasks;using PMS.Model;namespace PMS.IDAL{  <#// Emit Entity Typesforeach (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#>Dal :IBaseDal<<#=entity.Name#>>  {     }<#}#>  }

IDbSession.tt

<#@ 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 = @"..//PMS.Model//PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection(inputFile);string namespaceName = code.VsNamespaceSuggestion();EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create(this);#>using System;using System.Collections.Generic;using System.Data.Entity;using System.Linq;using System.Text;using System.Threading.Tasks;namespace PMS.IDAL{  public partial interface IDbSession  {<#// Emit Entity Typesforeach (EntityType entity in ItemCollection.GetItems<EntityType>().OrderBy(e => e.Name)){  //fileManager.StartNewFile(entity.Name + "RepositoryExt.cs");  //BeginNamespace(namespaceName, code);  #>      I<#=entity.Name#>Dal <#=entity.Name#>Dal{get;set;}<#}#>  }  }

DALFactory层

SimpleDalFactory.tt

<#@ 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 =@"..//PMS.Model//PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection(inputFile);string namespaceName = code.VsNamespaceSuggestion();EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create(this);#>using SW.OA.IDAL;using System;using System.Collections.Generic;using System.Configuration;using System.Linq;using System.Reflection;using System.Text;using System.Threading.Tasks;namespace SW.OA.DALFactory{  public partial class AbstractFactory  {     <#foreach (EntityType entity in ItemCollection.GetItems<EntityType>().OrderBy(e => e.Name)){  #>        public static I<#=entity.Name#>Dal Create<#=entity.Name#>Dal()    {     string fullClassName = NameSpace + ".<#=entity.Name#>Dal";     return CreateInstance(fullClassName) as I<#=entity.Name#>Dal;    }<#}#>  }  }

DbSession.tt

<#@ 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 = @"..//PMS.Model//PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection(inputFile);string namespaceName = code.VsNamespaceSuggestion();EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create(this);#>using PMS.DAL;using PMS.IDAL;using PMS.Model;using System;using System.Collections.Generic;using System.Data.Entity;using System.Linq;using System.Text;using System.Threading.Tasks;namespace PMS.DALFactory{  public partial class DBSession : IDBSession  {<#// Emit Entity Typesforeach (EntityType entity in ItemCollection.GetItems<EntityType>().OrderBy(e => e.Name)){  //fileManager.StartNewFile(entity.Name + "RepositoryExt.cs");  //BeginNamespace(namespaceName, code);  #>      private I<#=entity.Name#>Dal _<#=entity.Name#>Dal;    public I<#=entity.Name#>Dal <#=entity.Name#>Dal    {      get      {        if(_<#=entity.Name#>Dal == null)        {          _<#=entity.Name#>Dal = AbstractFactory.Create<#=entity.Name#>Dal();        }        return _<#=entity.Name#>Dal;      }      set { _<#=entity.Name#>Dal = value; }    }<#}#>  }  }

BLL层

Service.tt

<#@ 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 = @"..//PMS.Model//PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection(inputFile);string namespaceName = code.VsNamespaceSuggestion();EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create(this);#>using PMS.IBLL;using PMS.Model;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace PMS.BLL{<#// Emit Entity Typesforeach (EntityType entity in ItemCollection.GetItems<EntityType>().OrderBy(e => e.Name)){  //fileManager.StartNewFile(entity.Name + "RepositoryExt.cs");  //BeginNamespace(namespaceName, code);  #>    public partial class <#=entity.Name#>Service :BaseService<<#=entity.Name#>>,I<#=entity.Name#>Service  {       public override void SetCurrentDal()    {      CurrentDal = this.CurrentDbSession.<#=entity.Name#>Dal;    }  }  <#}#>  }

BLL层

IService.tt

<#@ 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 = @"..//PMS.Model//PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection(inputFile);string namespaceName = code.VsNamespaceSuggestion();EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create(this);#>using PMS.Model;using PMS.Model.Search;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace PMS.IBLL{<#// Emit Entity Typesforeach (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#>Service : IBaseService<<#=entity.Name#>>  {      }  <#}#>  }

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