EF架构~为EF DbContext生成的实体添加注释 【转】
2012-11-01 10:19
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void WriteProperty(CodeGenerationTools code, EdmProperty edmProperty) { if (edmProperty.Documentation != null && edmProperty.Documentation.Summary != null) { WriteProperty(Accessibility.ForProperty(edmProperty), code.Escape(edmProperty.Documentation.Summary), code.Escape(edmProperty.TypeUsage), code.Escape(edmProperty), code.SpaceAfter(Accessibility.ForGetter(edmProperty)), code.SpaceAfter(Accessibility.ForSetter(edmProperty))); } else { WriteProperty(Accessibility.ForProperty(edmProperty), code.Escape(edmProperty.Name), code.Escape(edmProperty.TypeUsage), code.Escape(edmProperty), code.SpaceAfter(Accessibility.ForGetter(edmProperty)), code.SpaceAfter(Accessibility.ForSetter(edmProperty))); } } void WriteNavigationProperty(CodeGenerationTools code, NavigationProperty navigationProperty) { var endType = code.Escape(navigationProperty.ToEndMember.GetEntityType()); if (navigationProperty.Documentation != null && navigationProperty.Documentation.Summary != null) { WriteProperty(PropertyVirtualModifier(Accessibility.ForProperty(navigationProperty)), code.Escape(navigationProperty.Documentation.Summary), navigationProperty.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many ? ("ICollection<" + endType + ">") : endType, code.Escape(navigationProperty), code.SpaceAfter(Accessibility.ForGetter(navigationProperty)), code.SpaceAfter(Accessibility.ForSetter(navigationProperty))); } else { WriteProperty(PropertyVirtualModifier(Accessibility.ForProperty(navigationProperty)), code.Escape(navigationProperty.Name), navigationProperty.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many ? ("ICollection<" + endType + ">") : endType, code.Escape(navigationProperty), code.SpaceAfter(Accessibility.ForGetter(navigationProperty)), code.SpaceAfter(Accessibility.ForSetter(navigationProperty))); } } void WriteProperty(string accessibility, string summary, string type, string name, string getterAccessibility, string setterAccessibility) { #> /// <summary> /// <#=summary#> /// </summary> <#=accessibility#> <#=type#> <#=name#> { <#=getterAccessibility#>get; <#=setterAccessibility#>set; } <#+ }
保存后,它会将结果输出到与TT文件同时的cs文件中,如果模板出现错误,也会将错误信息输出到CS文件中,如果成功,就会有如何内容:
//------------------------------------------------------------------------------ // <auto-generated> // This code was generated from a template. // // Manual changes to this file may cause unexpected behavior in your application. // Manual changes to this file will be overwritten if the code is regenerated. // </auto-generated> //------------------------------------------------------------------------------ using System; using System.Collections.Generic;
使用EF架构时,你的实体生成方案有多种,entity object,poco,dbcontext等等,对于entity object方案生成的实体,我们感觉很臃肿,当然它的功能很强在,但有时在查看类实体时,有些麻烦,因为所有实体都在一个类文件中,有点像linq to sql,而它的类格局也与dbml有些雷同,当然这不是今天的重点,今天主要说的是当EDMX文件添加注释后,如何把注释同时添加到dbcontext实体上。
方案:修改dbcontext的T4模版
实现:找到以下代码块
先为类加注释
string summary=string.Empty; foreach (var entity in ItemCollection.GetItems<EntityType>().OrderBy(e => e.Name)) { fileManager.StartNewFile(entity.Name + ".cs"); BeginNamespace(namespaceName, code); if(entity.Documentation !=null && entity.Documentation.Summary!=null) summary=entity.Documentation.Summary; else summary=entity.Name; #> /// <summary> /// <#=summary#> /// </summary>
再为类中的属性加注释
void WriteProperty(CodeGenerationTools code, EdmProperty edmProperty) {}
将原来的代码删除,替换成如下代码
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