我遇到的情况是,当我使用派生类时,策略注入不再有效。
所涉及的类看起来像这样(基本上是接口,抽象基类和实现类):
public interface IRepository<T>
{
void Create(T iItem);
}
public abstract class ElmtRepository<T> : IRepository<T>
{
protected List<T> Items { get; set; }
public ElmtRepository()
{
Items = new List<T>();
}
public void Create(T iItem)
{
Items.Add(iItem);
}
}
public class AcctPgmRepository : ElmtRepository<AcctPgm>
{
}
配置如下所示:
<container>
<extension type="Interception"/>
<register type="IRepository[AcctPgm]" mapTo="AcctPgmRepository">
<interceptor type="InterfaceInterceptor"/>
<interceptionBehavior type="PolicyInjectionBehavior"/>
</register>
<interception>
<policy name="policy-create">
<matchingRule name="create-rule1" type="TypeMatchingRule">
<constructor>
<param name="typeName">
<value value="AcctPgmRepository"/>
</param>
</constructor>
</matchingRule>
<matchingRule name="create-rule2" type="MemberNameMatchingRule">
<constructor>
<param name="namesToMatch">
<array type="string[]">
<value value="Create"/>
</array>
</param>
</constructor>
</matchingRule>
<callHandler name="create-handler1" type="AcctPgmAuthorizationHandler">
<lifetime type="singleton"/>
<constructor>
<param name="allowedRoles">
<array type="string[]">
<value value="GroupController"/>
</array>
</param>
</constructor>
</callHandler>
</policy>
</interception>
</container>
如果删除ElmtRepository基类,它将按预期工作。使用基类,注入不会发生。没有错误消息,但也没有策略。即使我在派生类中实现Create()方法,也会发生这种情况。
有没有办法让这种类层次结构与Unity策略注入一起工作?
谢谢, 吉姆
答案 0 :(得分:2)
这种类继承Unity通常没有问题。但是,配置泛型是无穷无尽的令人头疼的错误消息。我打赌那是你真正的问题。但是,由于您没有发布错误消息(或AcctPgm类或AcctPgmAuthorizationHandler),我无法确定。
我将包含的类型更改为int
,并使您的代码版本正常运行:
using System;
using System.Collections.Generic;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Microsoft.Practices.Unity.InterceptionExtension;
using Microsoft.Practices.Unity;
using Microsoft.Practices.Unity.Configuration;
namespace UnityTest
{
public interface IRepository<T>
{
void Create(T iItem);
}
public abstract class ElmtRepository<T> : IRepository<T>
{
protected List<T> Items { get; set; }
public ElmtRepository()
{
Items = new List<T>();
}
public void Create(T iItem)
{
System.Diagnostics.Debug.WriteLine("Creating...");
Items.Add(iItem);
}
}
public class AcctPgmRepository : ElmtRepository<int> { }
public class LogHandler : ICallHandler
{
public IMethodReturn Invoke(IMethodInvocation input, GetNextHandlerDelegate getNext)
{
System.Diagnostics.Debug.WriteLine("Begin");
IMethodReturn result = getNext().Invoke(input, getNext);
System.Diagnostics.Debug.WriteLine("End");
return result;
}
public int Order { get; set; }
}
[TestClass]
public class InheritenceGenericsTests
{
[TestMethod]
public void CreateTest()
{
IUnityContainer container = new UnityContainer().LoadConfiguration("Inheritence");
IRepository<int> r2 = container.Resolve<IRepository<int>>();
Assert.IsNotNull(r2);
r2.Create(2);
}
}
}
with config:
<alias alias="IRepository" type="UnityTest.IRepository`1, UnityTest"/>
<alias alias="IRepositoryClosed" type="UnityTest.IRepository`1[System.Int32], UnityTest"/>
<alias alias="AcctPgmRepository" type="UnityTest.AcctPgmRepository, UnityTest"/>
<container name="Inheritence">
<extension type="Interception"/>
<!-- register either type="IRepositoryClosed" or type="IRepository" -->
<register type="IRepositoryClosed" mapTo="AcctPgmRepository">
<interceptor type="InterfaceInterceptor"/>
<policyInjection/>
</register>
<interception>
<policy name="policy-create">
<matchingRule name="create-rule2" type="MemberNameMatchingRule">
<constructor>
<param name="namesToMatch">
<array type="string[]">
<value value="Create"/>
</array>
</param>
</constructor>
</matchingRule>
<callHandler name="create-handler1" type="UnityTest.LogHandler, UnityTest"></callHandler>
</policy>
</interception>
</container>
提供输出:
Begin
Creating...
End