英文:
In Spring4D how to register multiple auto factories for same interface
问题
我想通过容器为以下类提供构造函数参数，但无法找到注册多个自动工厂的方法。
TItemFactory = class(TInterfacedObject, IItemFactory)
private
fFactories: TArray<Func<IHost, IItem>>;
protected
function CreateInstance(Host: IHost): TArray<IItem>;
public
constructor Create(Factories: TArray<Func<IHost, IItem>>);
end;
如果我想要多种类型的项目，我可以将它们注册为
GlobalContainer.RegisterType<IItem, TItem1>('Item1');
GlobalContainer.RegisterType<IItem, TItem2>('Item2');
如果我只有一种类型的项目，我可以轻松地
GlobalContainer.RegisterType<IItem, TItem1>;
GlobalContainer.RegisterFactory<Func<IHost, IItem>>;
但我可以看到给多个自动工厂命名没有意义，因为它们只引用 IItem 而不是 TItem1 或 TItem2。
英文:
I want to provide the constructor arguments to the following class via the container but am unable to find a way of registering the multiple auto factories.
TItemFactory = class(TInterfacedObject, IItemFactory)
private
fFactories: TArray<Func<IHost,IItem>>;
protected
function CreateInstance(Host: IHost): TArray<IItem>;
public
constructor Create(Factories: TArray<Func<IHost,IItem>>);
end;
If I wanted to have multiple types of items I could register them as
GlobalContainer.RegisterType<IItem,TItem1>('Item1');
GlobalContainer.RegisterType<IItem,TItem2>('Item2');
If I only had one type of item I could easily
GlobalContainer.RegisterType<IItem,TItem1>;
GlobalContainer.RegisterFactory<Func<IHost,IItem>>;
But I can see there is no point in naming multiple auto factories as they only reference IItem and not TItem1 or TItem2.
答案1
得分: 0
"RegisterFactory"的参数中有两个重载，您可以在其中指定"resolvedServiceName"。
GlobalContainer.RegisterFactory<Func<IHost, IItem>>('ItemFactory1', 'Item1');
GlobalContainer.RegisterFactory<Func<IHost, IItem>>('ItemFactory2', 'Item2');
英文:
Simple, look at the parameters of RegisterFactory, there are two overloads where you can specify the resolvedServiceName.
GlobalContainer.RegisterFactory<Func<IHost, IItem>>('ItemFactory1', 'Item1');
GlobalContainer.RegisterFactory<Func<IHost, IItem>>('ItemFactory2', 'Item2');
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