如何在StructureMap Registy构造函数中获取某种类型的实例(在不同的注册表中注册)?我想使用这样的代码:
public RepositoriesRegistry()
{
IApplicationSettings lApplicationSettings =
ObjectFactory.GetInstance<IApplicationSettings>();
Debug.Assert(lApplicationSettings != null);
const string cSupportedDevicesConnectionString =
"metadata=res://*/Models.SupportedDevices.Database.SupportedDevicesModel.csdl|res://*/Models.SupportedDevices.Database.SupportedDevicesModel.ssdl|res://*/Models.SupportedDevices.Database.SupportedDevicesModel.msl;provider=System.Data.SqlClient;provider connection string=\"{0}\"";
string lSupportedDevicesConnectionString =
string.Format(cSupportedDevicesConnectionString, lDatabaseConnectionString);
SupportedDevicesEntities lSupportedDevicesEntities =
new SupportedDevicesEntities(lSupportedDevicesConnectionString);
ForRequestedType<SupportedDevicesEntities>().TheDefault.IsThis(
lSupportedDevicesEntities);
ForRequestedType<ISupportedDevicesRepository>().TheDefault.IsThis(
new SupportedDevicesRepository(lSupportedDevicesEntities));
}
IApplicationSettings是应用程序设置的界面。实现此接口的具体类型(当前为ConfigFileApplicationSettings类)在另一个注册表中注册,如下所示:
public ApplicationServicesRegistry()
{
ForRequestedType<IApplicationSettings>().TheDefault.IsThis(
new ConfigFileApplicationSettings());
}
两个注册管理机构都在Bootstrapper中注册:
#region IBootstrapper Members
public void BootstrapStructureMap()
{
ObjectFactory.Initialize(InitalizeStructureMapContainer);
}
#endregion
#region Private properties
private static bool HasStarted { get; set; }
#endregion
#region Private methods
private void InitalizeStructureMapContainer(IInitializationExpression x)
{
x.IgnoreStructureMapConfig = true;
x.AddRegistry<ViewModelRegistry>();
x.AddRegistry<ApplicationServicesRegistry>();
x.AddRegistry<RepositoriesRegistry>();
x.AddRegistry<DataOperationsRegistry>();
}
#endregion
当我尝试在注册表构造函数中获取IApplicationRegisty的实例时,我遇到了错误(当然)。我没有完全理解如何以正确的方式使用StructureMap。也许我应该以不同的方式做事。但无论如何我可以在Registry构造函数中获得早期注册的某种类型的实例吗?
答案 0 :(得分:9)
我今天遇到了同样的问题。 Jeremy Miller(没有关系:))的答案是StructureMap没有设置为在配置时创建实例。
他推荐的解决方法和我使用的是为设置创建一个容器。这是我的解决方案。
public class SettingsRegistry : Registry
{
public SettingsRegistry()
{
ForRequestedType<ISettingsProvider>().TheDefault.Is.OfConcreteType<AppSettingsProvider>();
Scan(s =>
{
s.TheCallingAssembly();
s.With<SettingsScanner>();
});
}
}
public class RegistryNeedingSettings : Registry
{
public RegistryNeedingSettings()
{
var settingsContainer = new Container(new SettingsRegistry());
var coreSettings = settingsContainer.GetInstance<CoreSettings>();
//configuration needing access to the settings.
}
}
我将所有设置移动到自己的注册表中,并确保在依赖注册表之前配置设置注册表。
希望这有帮助。