在前篇中我們已經(jīng)將User類中的代碼做了具體的實現(xiàn),但仍然有多個實體類未實現(xiàn),以后可能還會增加新的數(shù)據(jù)表,數(shù)據(jù)表結構也有可能發(fā)生變化,所以我們使用T4模板來完成類的生成,這樣就算數(shù)據(jù)庫表發(fā)生了改變,也會自動根據(jù)改變后的實體對類進行重新生成。
下面是數(shù)據(jù)訪問層的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實體文件在項目中的路徑 string inputFile = @"..\\PMS.Model\\PMS.edmx"; EdmItemCollection ItemCollection = loader.CreateEdmItemCollection(inputFile); string namespaceName = code.VsNamespaceSuggestion(); EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create(this); #> <#//這里為命名空間部分,手動更改為相應的命名空間 #> 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 { } <#}#> }
我們將EF實體文件路徑、命名空間更改為對應的值時,Ctrl+S保存,即可生成對應的其他類型的數(shù)據(jù)訪問類
其他層中也大同小異,只需要做對應的更改即可,下面我將提供相應的代碼
IDAL層
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 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
<#@ 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層
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 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層
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 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層
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 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#>> { } <#}#> }
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