Question

我有一个实体列表。每个实体都继承一些基类。在控制器中，我应该确定每个实体对象的相应视图。我该怎么做？

class BaseEntity {}
class FooEntity extends BaseEntity {}
class BarEntity extends BaseEntity {}

class View {}
class FooView extends View {}
class BarView extends View {}

控制器代码：

BaseEntitty entities = repository.getSomeEntities();
List<View> views = new ArrayList();
for(BaseEntity in entities) {
    View view; //How can I determine the concrete view class?
    views.add(view);
}

P.S。适当的OOP溶液是优选的。

Answer 1

使用ViewFactory根据entity的类型创建相应的类型视图：

BaseEntity entities = repository.getSomeEntities();

List<View> views = new ArrayList();

foreach(BaseEntity entity in entities) 
{
    View view = viewFactory.Create(entity);

    views.add(view);
}

如何确定MVC中多态模型的视图

1 个答案: