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37
AOP.md
37
AOP.md
@@ -71,24 +71,41 @@ A: 为了考虑一致性用法,全部封装在 ColumnAttribute 下,这样
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FreeSql 提供 AOP 自定义特性功能,实现与多个 orm 共同拥有一套实体特性,可避免重复定义特性。
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> v1.4.0+ 已自动识别 EFCore 实体特性 Key/Required/NotMapped/Table/Column
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```csharp
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fsql.Aop.ConfigEntity += (s, e) => {
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var attr = e.EntityType.GetCustomAttributes(
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typeof(System.ComponentModel.DataAnnotations.Schema.TableAttribute), false).FirstOrDefault()
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as System.ComponentModel.DataAnnotations.Schema.TableAttribute;
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var attr = e.EntityType.GetCustomAttributes(typeof(MyTableAttribute), false).FirstOrDefault() as MyTableAttribute;
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if (attr != null)
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e.ModifyResult.Name = attr.Name; //表名
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//e.ModifyIndexResult.Add(new IndexAttribute("idx_xx", "Title")); //索引
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};
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fsql.Aop.ConfigEntityProperty += (s, e) => {
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if (e.Property.GetCustomAttributes(
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typeof(System.ComponentModel.DataAnnotations.KeyAttribute), false).Any())
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e.ModifyResult.IsPrimary = true; //主键
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var attr = e.Property.GetCustomAttributes(typeof(MyColumnAttribute), false).FirstOrDefault() as MyColumnAttribute;
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if (attr != null)
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e.ModifyResult.Name = attr.Name; //字段名
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};
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```
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就这样,FreeSql 的实体特性就可以和 EFCore 那样设定了。其他自增、乐观锁等,依葫芦画瓢便是。
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[MyTable("xxx")]
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class YourEntity {
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[MyColumn("id")]
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public int pkid { get; set; }
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}
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class MyTableAttribute : Attribute {
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public string Name { get; }
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public MyTableAttribute(string name)
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{
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this.Name = name;
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}
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}
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class MyColumnAttribute : Attribute {
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public string Name { get; }
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public MyColumnAttribute(string name)
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{
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this.Name = name;
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}
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}
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```
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## 表达式拦截
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