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
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<#@ 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 Types foreach (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
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<#@ 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 Types foreach (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
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<#@ 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 Types foreach (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
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<#@ 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
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<#@ 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 Types foreach (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
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<#@ 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 Types foreach (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
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<#@ 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 Types foreach (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#>> { } <#}#> } |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.cnblogs.com/JiaoWoWeiZai/p/5876914.html