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這篇文章主要介紹“有哪些動(dòng)態(tài)代理模式和Mixin模式”,在日常操作中,相信很多人在有哪些動(dòng)態(tài)代理模式和Mixin模式問(wèn)題上存在疑惑,小編查閱了各式資料,整理出簡(jiǎn)單好用的操作方法,希望對(duì)大家解答”有哪些動(dòng)態(tài)代理模式和Mixin模式”的疑惑有所幫助!接下來(lái),請(qǐng)跟著小編一起來(lái)學(xué)習(xí)吧!
重量級(jí)的ORM和IOC產(chǎn)品離不開動(dòng)態(tài)代理,作為開發(fā)人員,多數(shù)情況不用關(guān)注動(dòng)態(tài)代理的內(nèi)部實(shí)現(xiàn)機(jī)制,但是了解其一般的規(guī)律和模式還是有必要的,比如:雖然你開發(fā)期間采用了POCO,因?yàn)殚_啟了動(dòng)態(tài)代理,運(yùn)行期間則不是POCO。本文簡(jiǎn)單描述了5種代理生成模式和1種Mixin模式,最后給出一個(gè)示例。
復(fù)制代碼 代碼如下:
public interface IPlayable
{
void Play();
}
public class Animal : IPlayable
{
public virtual void Play()
{
Console.WriteLine("Animal.Play");
}
}
public class Dog : Animal
{
public override void Play()
{
Console.WriteLine("Dog.Play");
}
}
public interface IRunable
{
void Run();
}
public class RunAbility : IRunable
{
public void Run()
{
Console.WriteLine("RunAbility.Run");
}
}
public class AnimalInterceptor : IInterceptor
{
public void Intercept(IInvocation invocation)
{
Console.WriteLine("Before AnimalInterceptor.Intercept");
if (invocation.InvocationTarget != null)
{
invocation.Proceed();
}
Console.WriteLine("After AnimalInterceptor.Intercept");
}
}
第一種:ClassProxy
復(fù)制代碼 代碼如下:
{
Console.WriteLine("\n*************ClassProxy*************\n");
var generator = new ProxyGenerator();
var animal = generator.CreateClassProxy<Animal>(new AnimalInterceptor());
animal.Play();
Console.WriteLine(animal.GetType());
Console.WriteLine(animal.GetType().BaseType);
var compositeField = animal.GetType().GetField("__target");
Console.WriteLine(compositeField);
foreach (var interfaceType in animal.GetType().GetInterfaces())
{
Console.WriteLine(interfaceType);
}
}
第二種:ClassProxyWithTarget
復(fù)制代碼 代碼如下:
{
Console.WriteLine("\n*************ClassProxyWithTarget*************\n");
var generator = new ProxyGenerator();
var animal = generator.CreateClassProxyWithTarget<Animal>(new Dog(), new AnimalInterceptor());
animal.Play();
Console.WriteLine(animal.GetType());
Console.WriteLine(animal.GetType().BaseType);
var compositeField = animal.GetType().GetField("__target");
Console.WriteLine(compositeField);
foreach (var interfaceType in animal.GetType().GetInterfaces())
{
Console.WriteLine(interfaceType);
}
}
第三種:InterfaceProxyWithoutTarget
復(fù)制代碼 代碼如下:
{
Console.WriteLine("\n*************InterfaceProxyWithoutTarget*************\n");
var generator = new ProxyGenerator();
var animal = generator.CreateInterfaceProxyWithoutTarget<IPlayable>(new AnimalInterceptor());
animal.Play();
Console.WriteLine(animal.GetType());
Console.WriteLine(animal.GetType().BaseType);
var compositeField = animal.GetType().GetField("__target");
Console.WriteLine(compositeField);
foreach (var interfaceType in animal.GetType().GetInterfaces())
{
Console.WriteLine(interfaceType);
}
}
第四種:InterfaceProxyWithTarget
復(fù)制代碼 代碼如下:
{
Console.WriteLine("\n*************InterfaceProxyWithTarget*************\n");
var generator = new ProxyGenerator();
var animal = generator.CreateInterfaceProxyWithTarget<IPlayable>(new Dog(), new AnimalInterceptor());
animal.Play();
Console.WriteLine(animal.GetType());
Console.WriteLine(animal.GetType().BaseType);
var compositeField = animal.GetType().GetField("__target");
Console.WriteLine(compositeField);
foreach (var interfaceType in animal.GetType().GetInterfaces())
{
Console.WriteLine(interfaceType);
}
}
第五種:InterfaceProxyWithTargetInterface
復(fù)制代碼 代碼如下:
{
Console.WriteLine("\n*************InterfaceProxyWithTargetInterface*************\n");
var generator = new ProxyGenerator();
var animal = generator.CreateInterfaceProxyWithTargetInterface<IPlayable>(new Dog(), new AnimalInterceptor());
animal.Play();
Console.WriteLine(animal.GetType());
Console.WriteLine(animal.GetType().BaseType);
var compositeField = animal.GetType().GetField("__target");
Console.WriteLine(compositeField);
foreach (var interfaceType in animal.GetType().GetInterfaces())
{
Console.WriteLine(interfaceType);
}
}
Mixin模式
復(fù)制代碼 代碼如下:
{
Console.WriteLine("\n*************Mixin*************\n");
var generator = new ProxyGenerator();
var options = new ProxyGenerationOptions();
options.AddMixinInstance(new RunAbility());
var animal = generator.CreateClassProxy<Animal>(options, new AnimalInterceptor());
animal.Play();
(animal as IRunable).Run();
Console.WriteLine(animal.GetType());
Console.WriteLine(animal.GetType().BaseType);
var compositeField = animal.GetType().GetField("__target");
Console.WriteLine(compositeField);
foreach (var field in animal.GetType().GetFields())
{
if (field.Name.StartsWith("__mixin"))
{
Console.WriteLine(field);
}
}
foreach (var interfaceType in animal.GetType().GetInterfaces())
{
Console.WriteLine(interfaceType);
}
}
到此,關(guān)于“有哪些動(dòng)態(tài)代理模式和Mixin模式”的學(xué)習(xí)就結(jié)束了,希望能夠解決大家的疑惑。理論與實(shí)踐的搭配能更好的幫助大家學(xué)習(xí),快去試試吧!若想繼續(xù)學(xué)習(xí)更多相關(guān)知識(shí),請(qǐng)繼續(xù)關(guān)注億速云網(wǎng)站,小編會(huì)繼續(xù)努力為大家?guī)?lái)更多實(shí)用的文章!
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