使用autofac注入类型转换工厂

Question

I'm trying to get rid of a service locator pattern in an application using Autofac. Currently, I have a class like this:

class Factory {
    private readonly ILifetimeScope _scope;
    public Factory(ILifetimeScope scope) {
        _scope = scope;
    }
    public Operation CreateOperation(OperationData dto) {
        var destinationType = NameConventionLookup(dto.GetType().Name);
        return _scope.Resolve(destinationType, new TypedParameter(dto.GetType(), dto));
    }
    private Type NameConventionLookup(Type t) {
        // Return a type by removing parts of the type name and appending others
    }
}

Basically, I get a poco object, and based on this object I create another object with the input as constructor argument. Example types:

class MyDto : OperationData {
    public string Foo;
    public int Bar;
}
class MyOperation : Operation {
    public MyOperation(MyDto dto) { ... }
}

Can I get rid of the ILifetimeScope in the factory? I would like to instead get some factory method, Func<OperationData, Operation> or the like, but can Autofac generate this? Can I help the library so that it can?

Answer 1

只要在合成根目录中定义了您的Factory类，就没有理由删除对ILifetimeScope的引用，因为在这种情况下，不是Service Locator反模式 ，而仅是Mechanics 。