Unity通过TagAttribute显示定义需要被拦截注入的成员,TagAttributeMatchingRule类型用来匹配该规则。需要注意的是TagAttributeMatchingRule不支持通配符。看一个简单的例子:
1 public class MyObject 2 { 3 [Tag("Test")] 4 public virtual Int32 DoWork(Int32 i, Char c) 5 { 6 return i; 7 } 8 9 [Tag("Test2")] 10 public virtual void DoWork2(Int32 i, Char c) 11 { 12 13 } 14 15 public virtual void DoWork3() 16 { 17 18 } 19 } 20 21 IUnityContainer unityContainer = new UnityContainer(); 22 23 unityContainer.LoadConfiguration(); 24 unityContainer.Configure<Interception>() 25 .AddPolicy(“TagAttributeMatchingRule”) 26 .AddMatchingRule(new TagAttributeMatchingRule(“Test”)) 27 .AddCallHandler<Log4NetHandler>(); 28 unityContainer.RegisterType<MyObject>( 29 new Interceptor<VirtualMethodInterceptor>(), 30 new InterceptionBehavior<PolicyInjectionBehavior>() 31 ); 32 33 MyObject myObject = unityContainer.Resolve<MyObject>(); 34 35 myObject.DoWork(Int32.MaxValue, Char.MaxValue); 36 myObject.DoWork2(Int32.MaxValue, Char.MaxValue); 37 myObject.DoWork3();
配置文件定义如下:
<unity xmlns=”http://schemas.microsoft.com/practices/2010/unity”> <sectionExtension type=”Microsoft.Practices.Unity.InterceptionExtension.Configuration.InterceptionConfigurationExtension, Microsoft.Practices.Unity.Interception.Configuration” /> <assembly name=”mscorlib, 2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089″ /> <assembly name=”Microsoft.Practices.Unity.Interception” /> <assembly name=”UnityTest6″ /> <namespace name=”System” /> <namespace name=”System.Collections.Generic” /> <namespace name=”Microsoft.Practices.Unity.InterceptionExtension” /> <namespace name=”UnityTest6″ /> <container> <extension type=”Interception” /> <interception> <policy name=”TagAttributePolicy”> <matchingRule name=”TagAttributeMatchingRule” type=”TagAttributeMatchingRule”> <constructor> <param name=”tagToMatch” value=”Test” /> </constructor> </matchingRule> <callHandler name=”Log4NetHandler” type=”Log4NetHandler” /> </policy> </interception> <register type=”MyObject”> <interceptor type=”VirtualMethodInterceptor” /> <interceptionBehavior type=”PolicyInjectionBehavior” /> </register> </container> </unity>