鉴于
Component.For<IService>().ImplementedBy<SecretService>().Named("secretService")
Component.For<IService>().ImplementedBy<PublicService>().Named("publicService")
和
class Foo{
public Foo(IService publicService){ ...... }
}
和
class Bar{
public Bar(IService secretService){ ...... }
}
那我该如何实现以下目标
Foo和Bar应该分别获得publicService和secretService的实例,完全基于它们的构造函数参数的名称。
我现在已经使用自定义的 SubDependencyResolver 让它工作,我将其添加到容器中,现在它按名称注入实现
public class ByParameterNameResolver : ISubDependencyResolver
{
private readonly IKernel kernel;
public ByParameterNameResolver(IKernel kernel)
{
this.kernel = kernel;
}
public virtual bool CanResolve(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency)
{
if (dependency.TargetItemType == null)
return false;
if (string.IsNullOrWhiteSpace(dependency.DependencyKey))
return false;
return kernel.HasComponent(dependency.DependencyKey);
}
public virtual object Resolve(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency)
{
return kernel.Resolve(dependency.DependencyKey, dependency.TargetItemType);
}
}