假设我有以下代码:
class Program
{
static void Main(string[] args)
{
IUnityContainer container = new UnityContainer();
container.AddNewExtension<Interception>();
container.RegisterType<Interceptable>(
new Interceptor<VirtualMethodInterceptor>(),
new InterceptionBehavior<PolicyInjectionBehavior>());
container
.Configure<Interception>()
.AddPolicy("PolicyName")
.AddMatchingRule(new CustomAttributeMatchingRule(typeof(SomeAttribute), true))
.AddMatchingRule(new PropertyMatchingRule("*", PropertyMatchingOption.Set))
.AddCallHandler<PropertySetterCallHandler>();
.Interception
.AddPolicy("AnotherPolicyName")
.AddMatchingRule(new CustomAttributeMatchingRule(typeof(SomeOTHERAttribute), true))
.AddMatchingRule(new PropertyMatchingRule("*M", PropertyMatchingOption.Set))
.AddCallHandler<ANOTHERPropertySetterCallHandler>();
var ic = container.Resolve<Interceptable>();
//property setter is invoked - the matching rules from BOTH the policies will be tried
ic.Property = 2;
Console.ReadLine();
}
class Interceptable
{
public virtual int Property { get; [SomeAttribute]set; }
}
}
现在的配置方式,每次我解析一个 Interceptable 实例并在其上调用公共虚拟方法时,都会尝试 4 个匹配规则(来自两个策略)。
这可能会在实际应用中产生开销。我想做的是指定我只希望(例如)“PolicyName”策略应用于 Interceptable 类的实例。有没有办法做到这一点?
谢谢