作者:迎风奔跑的狼 | 来源:互联网 | 2022-12-09 16:06
下面是我的变压器接口
public interface Transformer
{
public O transformToState(BusinessObject input);
}
这是我的Transformer Impl之一
public class GoldTransformer implements Transformer
{
@Override
public Gold transformToState(BusinessObject input) {
GoldBO goldbo= (GoldBO) input; // redundant casting line
//do some transformation with BO to make it a state with some business logic
}
}
这是我的另一个Transformer Impl
public class SilverTransformer implements Transformer
{
@Override
public Gold transformToState(BusinessObject input) {
SilverBO goldbo= (SilverBO) input; // redundant casting line
// again do some transformation with BO to make it a state with some business logic
}
}
Both SilverBO
和GoldBO
Implements BusinessObject
是标记接口.而Silver
和Gold
扩展State
.我真的觉得这个演员很烦人且多余,有没有更好的方法在这里使用泛型?还是使用更好的模式?我不想对state
金银做任何改变.
1> Mureinik..:
您也可以在输入上概括接口BusinessObject
:
public interface Transformer {
public O transformToState(I input);
}
public class GoldTransformer implements Transformer {
@Override
public Gold transformToState(GoldBO input) {
// Code...
}
}