Unable to put different providers in one self-defined common mapper while using annotation-based dynamic routing

[YuanHao97]

I'm trying to put all different Provider methods in one mapper: BaseSelectProvider.class,BaseUpdateProvider.class, etc

@DatasourceRouting("ds1")
@tk.mybatis.mapper.annotation.RegisterMapper
public interface DS1Mapper<T> {
    @SelectProvider(type = BaseSelectProvider.class, method = "dynamicSQL")
    T selectOne(T record);
    @InsertProvider(type = BaseInsertProvider.class, method = "dynamicSQL")
    int insert(T record);
}

The annotation DatasourceRouting is used to do dynamic routing, so the common mapper need to be put in one mapper. However I got this error: 一个通用Mapper中只允许存在一个MapperTemplate子类。 Is it possible to add more than 1 Provider in one class? As far as I can see from source code, it is possible to add more than one MapperTemplate in tk.mybatis.mapper.mapperhelper.MapperHelper#fromMapperClass.

[abel533]

可以将两个接口方法定义到不同接口中，然后通过extends继承到一个接口中。

[YuanHao97]

放两个接口是可以的，但是有两个问题

1. 没太明白为啥一个类一定要限制一个provider，为啥不都放一起呢
2. 我这个使用场景，是希望利用注解实现动态路由。如果放多个接口，每个继承的接口都需要加动态路由的注解，感觉这样不是很合适。如果都放一个类，就只用一个注解解决了

[YuanHao97]

@abel533 帮忙review下pr