Question

在我的注册表中我有

Scan(scanner =>
         {
             scanner.AssemblyContainingType<EmailValidation>();
             scanner.ConnectImplementationsToTypesClosing(typeof(IValidation<>));
         });

我应该怎样做才能将这些全部定义为单身人士？

另外，对于这个问题，有没有理由不将无状态的所有内容定义为在StructureMap中注册的单例对象？

Answer 1

凯文的答案对于2.5.4及更早版本是正确的。在当前的StructureMap主干中（当发布2.5.5+时），您现在可以执行：

Scan(scanner =>
{
   scanner.AssemblyContainingType<EmailValidation>();
   scanner.ConnectImplementationsToTypesClosing(typeof(IValidation<>))
          .OnAddedPluginTypes(t => t.Singleton());
});

Answer 2

程序集扫描程序方法ConnectImplementationsToTypesClosing使用IRegistrationConvention来完成工作。为此，我复制并更新了StructureMap通用连接扫描程序以获取范围。接下来，我创建了一个方便的汇编扫描程序扩展方法，用作句法糖来连接它。

    public class GenericConnectionScannerWithScope : IRegistrationConvention
{
    private readonly Type _openType;
    private readonly InstanceScope _instanceScope;

    public GenericConnectionScannerWithScope(Type openType, InstanceScope instanceScope)
    {
        _openType = openType;
        _instanceScope = instanceScope;

        if (!_openType.IsOpenGeneric())
        {
            throw new ApplicationException("This scanning convention can only be used with open generic types");
        }
    }

    public void Process(Type type, Registry registry)
    {
        Type interfaceType = type.FindInterfaceThatCloses(_openType);
        if (interfaceType != null)
        {
            registry.For(interfaceType).LifecycleIs(_instanceScope).Add(type);
        }
    }
}

public static class StructureMapConfigurationExtensions
{
    public static void ConnectImplementationsToSingletonTypesClosing(this IAssemblyScanner assemblyScanner, Type openGenericType)
    {
        assemblyScanner.With(new GenericConnectionScannerWithScope(openGenericType, InstanceScope.Singleton));
    }
}

这是适当的设置代码。

Scan(scanner =>
     {
         scanner.ConnectImplementationsToSingletonTypesClosing(typeof(IValidation<>));
     });

希望这有帮助。

StructureMap：如何在与ConnectImplementationsToTypesClosing相关的类型上设置生命周期

2 个答案: