fluent

EF Code First 学习笔记:约定配置

由 大憨熊 提交于 2020-02-04 02:51:42
要更改EF中的默认配置有两个方法，一个是用Data Annotations(在命名空间System.ComponentModel.DataAnnotations;)，直接作用于类的属性上面;还有一个就是Fluent API，通过新增相应的配置类来覆盖默认配置。现在我们用这两个来对比了解EF中的约定配置。 主键：KEY Data Annotations：通过Key关键字来标识一个主键 [Key] public int DestinationId { get; set; } Fluent API： public class BreakAwayContext : DbContext { public DbSet<Destination> Destinations { get; set; } public DbSet<Lodging> Lodgings { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { //Fluent API modelBuilder.Entity<Destination>().HasKey(d => d.DestinationId); base.OnModelCreating(modelBuilder); } } 外键 Data Annotations

EF Code First 学习笔记:约定配置

由 回眸只為那壹抹淺笑 提交于 2020-02-04 02:39:29
要更改EF中的默认配置有两个方法，一个是用Data Annotations(在命名空间System.ComponentModel.DataAnnotations;)，直接作用于类的属性上面;还有一个就是Fluent API，通过新增相应的配置类来覆盖默认配置。现在我们用这两个来对比了解EF中的约定配置。 主键：KEY Data Annotations：通过Key关键字来标识一个主键 [Key] public int DestinationId { get; set; } Fluent API： public class BreakAwayContext : DbContext { public DbSet<Destination> Destinations { get; set; } public DbSet<Lodging> Lodgings { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { //Fluent API modelBuilder.Entity<Destination>().HasKey(d => d.DestinationId); base.OnModelCreating(modelBuilder); } } 外键 Data Annotations

EF Code First 学习笔记:约定配置

由 孤街醉人 提交于 2020-02-04 02:37:55
要更改EF中的默认配置有两个方法，一个是用Data Annotations(在命名空间System.ComponentModel.DataAnnotations;)，直接作用于类的属性上面;还有一个就是Fluent API，通过新增相应的配置类来覆盖默认配置。现在我们用这两个来对比了解EF中的约定配置。 主键：KEY Data Annotations：通过 Key关键字来标识一个主键 [Key] public int DestinationId { get; set; } Fluent API： public class BreakAwayContext : DbContext { public DbSet<Destination> Destinations { get; set; } public DbSet<Lodging> Lodgings { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { //Fluent API modelBuilder.Entity<Destination>().HasKey(d => d.DestinationId); base.OnModelCreating(modelBuilder); } } 外键 Data

EF Code First 学习笔记:约定配置

由 陌路散爱 提交于 2020-02-04 02:37:00
要更改EF中的默认配置有两个方法，一个是用Data Annotations(在命名空间System.ComponentModel.DataAnnotations;)，直接作用于类的属性上面;还有一个就是Fluent API，通过新增相应的配置类来覆盖默认配置。现在我们用这两个来对比了解EF中的约定配置。 主键：KEY Data Annotations：通过Key关键字来标识一个主键 [Key] public int DestinationId { get; set; } Fluent API： public class BreakAwayContext : DbContext { public DbSet<Destination> Destinations { get; set; } public DbSet<Lodging> Lodgings { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { //Fluent API modelBuilder.Entity<Destination>().HasKey(d => d.DestinationId); base.OnModelCreating(modelBuilder); } } 外键 Data Annotations

Implementing Zero Or One to Zero Or One relationship in EF Code first by Fluent API

由 别来无恙 提交于 2020-01-26 08:46:35
问题 I have two POCO classes public class Order { int id; string code; int? quotationId; //it is foreign key public int Id{get;set;} public string Code{get;set;} public int? QuotationId{get;set;} Quotation quotation; public virtual Quotation Quotation { get; set; } .... } public class Quotation { int Id; string Code; public int Id{get;set;} public string Code{get;set;} Order order; public virtual Order Order { get; set; } .... } each Order may made from one or zero quotation, and each quotation

Implementing Zero Or One to Zero Or One relationship in EF Code first by Fluent API

由 青春壹個敷衍的年華 提交于 2020-01-26 08:46:07
问题 I have two POCO classes public class Order { int id; string code; int? quotationId; //it is foreign key public int Id{get;set;} public string Code{get;set;} public int? QuotationId{get;set;} Quotation quotation; public virtual Quotation Quotation { get; set; } .... } public class Quotation { int Id; string Code; public int Id{get;set;} public string Code{get;set;} Order order; public virtual Order Order { get; set; } .... } each Order may made from one or zero quotation, and each quotation

How to make a method pop first in java fluent interface?

由 元气小坏坏 提交于 2020-01-25 22:02:30
问题 This is my first asking, so sorry if I messed something. I have a task to implement a Mail, using Java fluent interface. I must have fields: From, To, Subject. The problem is, I can not make "From" to appear as first and only. Example: MailBuilder builder = new MailBuilder(); builder.from("Stiliyan").to("Alexander").subject("Welcome aboard"); But when I type the first dot "." all of them appears. (eg builder.to("a").from("b")..) So in short: builder.(HERE MUST APPEAR ONLY "from").to("No

Fluent Terminal的删除方法

由 被刻印的时光 ゝ 提交于 2020-01-22 19:33:28
引用： 1.https://github.com/felixse/FluentTerminal/issues/361 2.https://github.com/felixse/FluentTerminal/blob/master/Explorer%20Context%20Menu%20Integration/Uninstall.bat 刚刚想要删除Fluent Terminal终端软件，但是它自身并没有卸载程序，使用Ccleaner管理软件也找不到它的踪迹，经过百度搜索也找不到办法，尝试后发现在开始菜单栏中右击Fluent Terminal的图标可以出现卸载按钮，然后点击卸载，本以为完事了。但是在桌面上右击鼠标可以发现Open Fluent Terminal here选项依旧存在。这时候我想去它的老家(GitHub)上寻找解决方法，经过一番搜索后，发现三个批处理命令，如下： reg delete "HKCU\Software\Classes\Directory\shell\Open Fluent Terminal here" /f reg delete "HKCU\Software\Classes\Directory\Background\shell\Open Fluent Terminal here" /f reg delete "HKCU\Software\Classes

Method chaining and the finishing problem

由 微笑、不失礼 提交于 2020-01-16 15:46:23
问题 are there any approaches, given a statement like the following First().Second(); to know from within First() whether/when Second() has executed? Reference: http://martinfowler.com/dslwip/MethodChaining.html 回答1: Second() will not execute until First() has completed, therefore this is impossible. All that First() can do is to violate fluency, thereby making it impossible for Second() to run. 来源： https://stackoverflow.com/questions/2146623/method-chaining-and-the-finishing-problem

Laravel query builder with subquery and dynamic filters

由 假装没事ソ 提交于 2020-01-16 08:42:31
问题 I need to use the laravel query builder for a query with sub query with multiple dynamic filters. The code is something like this: $totalRechargesPerUserQuery = DB::table('transactions as T2') ->select([DB::raw('COUNT(T2.user_id)')]) ->join('users as U2', 'U2.id', '=', 'T2.user_id') ->whereRaw('U2.id = U1.id') ->groupBy('T2.user_id'); $this->applyPromotionFilter($totalRechargesPerUserQuery, $selectedWeeks, 'T2'); $query = DB::table('transactions as T1') ->select([ 'U1.name', 'U1.email', 'U1
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