mirror of
https://gitee.com/dotnetchina/OpenAuth.Net.git
synced 2025-05-09 23:28:02 +08:00
128 lines
3.3 KiB
Markdown
128 lines
3.3 KiB
Markdown
# 数据库实体
|
||
|
||
## 更换主键名称
|
||
|
||
系统默认的主键是以`Id`命名,如果数据库主键是其他名称,可以直接用注解进行更改:
|
||
|
||
```csharp
|
||
[Column("CustomerId")]
|
||
public string Id { get; set; }
|
||
```
|
||
|
||
## 如何添加主键类型为numberic的业务代码
|
||
|
||
如果数据库表中存在其他类型的主键,可以通过继承`BaseEntity`实现。目前系统默认有三个实体基类:
|
||
|
||
- `StringEntity`:针对数据库主键为varchar类型的数据表,主键按guid方式生成;
|
||
|
||
- `LongEntity`:针对数据库主键为numberic(15)的数据表,主键按雪花算法生成;【新功能,官方推荐使用方式👍】
|
||
|
||
- `IntAutoGenEntity`:针对数据库主键为numberic且为数据库自动生成的类型表,通常为SqlServer的自动增长类型和Oracle的Sequence生成;【新功能】
|
||
|
||
这三个基类可以覆盖90%以上的业务场景。如果这两个不能满足需求,可以自己按需求扩展。参考代码如下:
|
||
|
||
```csharp
|
||
/// <summary>
|
||
/// 数据库Id为int类型的数据实体使用该基类,用法同Entity
|
||
/// </summary>
|
||
public class IntEntity :BaseEntity
|
||
{
|
||
[Browsable(false)]
|
||
public int Id { get; set; }
|
||
public override bool KeyIsNull()
|
||
{
|
||
return Id == 0;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 需要自己有个生成随机ID的算法,可参考LongEntity中的雪花算法
|
||
/// </summary>
|
||
public override void GenerateDefaultKeyVal()
|
||
{
|
||
Id = RandomInt();
|
||
}
|
||
}
|
||
```
|
||
|
||
## 具体如何做
|
||
|
||
我们以一个主键为numeric(16)的表(表名为LongTable)为例:
|
||
|
||
```SQL
|
||
create table LongTable
|
||
(
|
||
Id numeric(16) not null
|
||
constraint LongTable_pk
|
||
primary key nonclustered,
|
||
Name varchar(50)
|
||
)
|
||
go
|
||
|
||
```
|
||
|
||
1. 首先创建对应的业务实体。在`OpenAuth.Repository.Domain`中添加:
|
||
|
||
```csharp
|
||
namespace OpenAuth.Repository.Domain
|
||
{
|
||
[Table("LongTable")]
|
||
public class LongTable :LongEntity
|
||
{
|
||
public string Name { get; set; }
|
||
}
|
||
}
|
||
```
|
||
|
||
2. 修改`OpenAuth.Repository.OpenAuthDBContext`,增加成员变量:
|
||
|
||
```csharp
|
||
public virtual DbSet<LongTable> IntTables { get; set; }
|
||
```
|
||
|
||
3. 最后创建对应的业务层代码。在`OpenAuth.App`中添加:
|
||
|
||
```csharp
|
||
namespace OpenAuth.App
|
||
{
|
||
/// <summary>
|
||
/// 主键为numberic类型的业务,使用BaseLongApp基类
|
||
/// </summary>
|
||
public class LongTableApp :BaseLongApp<LongTable, OpenAuthDBContext>
|
||
{
|
||
public void Add(LongTable application)
|
||
{
|
||
Repository.Add(application);
|
||
}
|
||
|
||
public void Update(LongTable application)
|
||
{
|
||
Repository.Update(application);
|
||
}
|
||
|
||
|
||
public async Task<List<LongTable>> GetList(QueryAppListReq request)
|
||
{
|
||
var applications = UnitWork.Find<LongTable>(null) ;
|
||
|
||
return applications.ToList();
|
||
}
|
||
|
||
public LongTableApp(IUnitWork<OpenAuthDBContext> unitWork, IRepository<LongTable,OpenAuthDBContext> repository,IAuth auth)
|
||
: base(unitWork, repository, auth)
|
||
{
|
||
}
|
||
}
|
||
}
|
||
```
|
||
|
||
|
||
|
||
然后就可以像其他应用服务一样使用这个服务
|
||
|
||
::: warning 注意
|
||
最新版才支持,以前的版本(2.0或以前的版本)可以参考BaseEntity进行改造
|
||
|
||
:::
|
||
|
||
|