Dependency injection 如何在与Castle Windsor DI容器相同的上下文中重用临时依赖项
如果我有以下设置,当在相同的上下文中创建对象时,如何配置容器以使用相同的数据库Dependency injection 如何在与Castle Windsor DI容器相同的上下文中重用临时依赖项,dependency-injection,castle-windsor,ioc-container,Dependency Injection,Castle Windsor,Ioc Container,如果我有以下设置,当在相同的上下文中创建对象时,如何配置容器以使用相同的数据库 public class Database { } public interface IRepository { Database Database { get; } } public interface IFooRepository : IRepository { } public interface IBarRepository : IRepository { } public class FooReposit
public class Database { }
public interface IRepository { Database Database { get; } }
public interface IFooRepository : IRepository { }
public interface IBarRepository : IRepository { }
public class FooRepository : IFooRepository
{
public Database Database { get; private set; }
public FooRepository(Database database) { this.Database = database; }
}
public class BarRepository : IBarRepository
{
public Database Database { get; private set; }
public BarRepository(Database database) { this.Database = database; }
}
public class Consumer
{
public IFooRepository fooRepository { get; private set; }
public IBarRepository barRepository { get; private set; }
public Consumer(IFooRepository fooRepository, IBarRepository barRepository)
{
this.fooRepository = fooRepository;
this.barRepository = barRepository;
}
}
[TestClass]
public class ConfigurationTest
{
private IWindsorContainer container;
[TestMethod]
public void SameDatabaseIsUsed()
{
Consumer consumer = container.Resolve<Consumer>();
IFooRepository fooRepository = consumer.fooRepository;
IBarRepository barRepository = consumer.barRepository;
Assert.AreEqual(fooRepository.Database, barRepository.Database); //FAILS
}
[TestMethod]
public void DifferentDatabaseIsUsed()
{
Consumer consumer = container.Resolve<Consumer>();
IFooRepository fooRepository = consumer.fooRepository;
Consumer consumer2 = container.Resolve<Consumer>();
IBarRepository barRepository = consumer2.barRepository;
Assert.AreNotEqual(fooRepository.Database, barRepository.Database); //PASSES
}
[TestInitialize]
public void SetUp()
{
container = new WindsorContainer();
container.Register(
Component.For<Database>().ImplementedBy<Database>().LifeStyle.Transient,
AllTypes.FromThisAssembly()
.BasedOn<IRepository>().WithService.FromInterface()
.Configure(c => c.LifeStyle.Transient),
Component.For<Consumer>().ImplementedBy<Consumer>().LifeStyle.Transient
);
}
}
公共类数据库{}
公共接口IRepository{Database Database{get;}}
公共接口IFooRepository:IRepository{}
公共接口IBarRepository:IRepository{}
公共类FooRepository:IFooRepository
{
公共数据库{get;private set;}
公共FooRepository(数据库){this.Database=Database;}
}
公共类BarRepository:IBarRepository
{
公共数据库{get;private set;}
公共存储库(数据库){this.Database=Database;}
}
公共类消费者
{
公共IFooRepository fooRepository{get;private set;}
公共IBarRepository barRepository{get;私有集;}
公共消费者(IFooRepository、IBarRepository)
{
this.fooRepository=fooRepository;
this.barRepository=barRepository;
}
}
[测试类]
公共类配置测试
{
私人集装箱;
[测试方法]
public void SameDatabaseIsUsed()
{
Consumer=container.Resolve();
IFooRepository foosrepository=consumer.foosrepository;
IBarRepository barRepository=消费者。barRepository;
Assert.AreEqual(fooRepository.Database,barRepository.Database);//失败
}
[测试方法]
public void differentitdatabaseisused()
{
Consumer=container.Resolve();
IFooRepository foosrepository=consumer.foosrepository;
Consumer consumer2=container.Resolve();
IBarRepository barRepository=消费者2.barRepository;
Assert.AreNotEqual(fooRepository.Database,barRepository.Database);//通过
}
[测试初始化]
公共作废设置()
{
容器=新WindsorContainer();
集装箱。登记(
Component.For().ImplementedBy().LifeStyle.Transient,
AllTypes.FromThisAssembly()
.BasedOn().WithService.FromInterface()
.Configure(c=>c.lifesture.Transient),
Component.For().ImplementedBy().LifeStyle.Transient
);
}
}
编辑:
我尝试过使用一种定制的生活方式,但我不知道我可以用什么来检测我是否切换了上下文
public class DatabaseLifestyleManager : AbstractLifestyleManager
{
private CreationContext context;
private Database database;
private Database Database
{
get
{
if (database == null) database = new Database();
return database;
}
set
{
database = null;
}
}
public override object Resolve(CreationContext context)
{
if (this.context!=null && this.context.??? == context.???)
return Database;
else
{
this.context = context;
Database = null;
return Database;
}
}
public override void Dispose()
{
database = null;
context = null;
}
}
......
Component.For<Database>().ImplementedBy<Database>().LifeStyle.Custom(typeof(DatabaseLifestyleManager)
公共类数据库LifeStyleManager:AbstractLifestyleManager
{
私人创作语境;
专用数据库;
专用数据库
{
得到
{
如果(database==null)database=newdatabase();
返回数据库;
}
设置
{
数据库=null;
}
}
公共重写对象解析(CreationContext上下文)
{
if(this.context!=null&&this.context.??==context.??)
返回数据库;
其他的
{
this.context=上下文;
数据库=null;
返回数据库;
}
}
公共覆盖无效处置()
{
数据库=null;
上下文=空;
}
}
......
Component.For().ImplementedBy().LifeStyle.Custom(typeof(DatabaseLifestyleManager)
我自己通过实现IDisposable提出了这个解决方案,这样我就可以为数据库使用一种sessionscope
这是处理这种情况的有效方法吗
所有测试都通过,但还有一些附加功能,必须在存储库的所有未来使用者中实现:
public class Database { }
public interface IRepository : IDisposable { Database Database { get; } }
public interface IFooRepository : IRepository { }
public interface IBarRepository : IRepository { }
public abstract class BaseRepository : IDisposable
{
public BaseRepository(Database database) { this.Database = database; }
public Database Database { get; private set; }
public void Dispose() { Database = null; }
}
public class FooRepository : BaseRepository, IFooRepository
{
public FooRepository(Database database) : base(database) { }
}
public class BarRepository : BaseRepository, IBarRepository
{
public BarRepository(Database database) : base(database) { }
}
public abstract class BaseConsumer : IDisposable
{
public abstract void Dispose();
}
public class Consumer : BaseConsumer
{
public IFooRepository fooRepository { get; private set; }
public IBarRepository barRepository { get; private set; }
public Consumer(IFooRepository fooRepository, IBarRepository barRepository)
{
this.fooRepository = fooRepository;
this.barRepository = barRepository;
}
public override void Dispose()
{
this.fooRepository.Dispose();
this.barRepository.Dispose();
}
}
[TestClass]
public class ConfigurationTest
{
private IWindsorContainer container;
[TestMethod]
public void SameDatabaseIsUsed()
{
IFooRepository fooRepository;
IBarRepository barRepository;
using (Consumer consumer = container.Resolve<Consumer>())
{
fooRepository = consumer.fooRepository;
barRepository = consumer.barRepository;
Assert.AreEqual(fooRepository.Database, barRepository.Database); //FAILS
}
Assert.IsNull(fooRepository.Database);
Assert.IsNull(barRepository.Database);
}
[TestMethod]
public void DifferentDatabaseIsUsed()
{
IFooRepository fooRepository;
IBarRepository barRepository;
using (Consumer consumer = container.Resolve<Consumer>())
fooRepository = consumer.fooRepository;
Assert.IsNull(fooRepository.Database);
using (Consumer consumer2 = container.Resolve<Consumer>())
barRepository = consumer2.barRepository;
Assert.IsNull(barRepository.Database);
}
[TestInitialize]
public void SetUp()
{
container = new WindsorContainer().Register(
Component.For<Database>().ImplementedBy<Database>().LifeStyle.Singleton,
AllTypes.FromThisAssembly()
.BasedOn<IRepository>().WithService.FromInterface()
.Configure(c => c.LifeStyle.Transient),
Component.For<Consumer>().ImplementedBy<Consumer>().LifeStyle.Transient
);
}
}
公共类数据库{}
公共接口IRepository:IDisposable{Database Database{get;}}
公共接口IFooRepository:IRepository{}
公共接口IBarRepository:IRepository{}
公共抽象类BaseRepository:IDisposable
{
公共BaseRepository(数据库){this.Database=Database;}
公共数据库{get;private set;}
public void Dispose(){Database=null;}
}
公共类FooRepository:BaseRepository、IFooRepository
{
公共FooRepository(数据库):base(数据库){}
}
公共类存储库:BaseRepository、IBarRepository
{
公共存储库(数据库):基(数据库){}
}
公共抽象类BaseConsumer:IDisposable
{
公开摘要无效处置();
}
公共类消费者:BaseConsumer
{
公共IFooRepository fooRepository{get;private set;}
公共IBarRepository barRepository{get;私有集;}
公共消费者(IFooRepository、IBarRepository)
{
this.fooRepository=fooRepository;
this.barRepository=barRepository;
}
公共覆盖无效处置()
{
这个.foodrepository.Dispose();
this.barRepository.Dispose();
}
}
[测试类]
公共类配置测试
{
私人集装箱;
[测试方法]
public void SameDatabaseIsUsed()
{
IFooRepository-fooRepository;
iBarrespositive Barrespositive;
使用(Consumer=container.Resolve())
{
fooRepository=consumer.fooRepository;
barRepository=消费者。barRepository;
Assert.AreEqual(fooRepository.Database,barRepository.Database);//失败
}
Assert.IsNull(fooRepository.Database);
IsNull(barRepository.Database);
}
[测试方法]
public void differentitdatabaseisused()
{
IFooRepository-fooRepository;
iBarrespositive Barrespositive;
使用(Consumer=container.Resolve())
fooRepository=consumer.fooRepository;
Assert.IsNull(fooRepository.Database);
使用(Consumer-consumer2=container.Resolve())
barRepository=消费者2.barRepository;
IsNull(barRepository.Database);
}
[测试初始化]
公共作废设置()
{
Register(Component.For<Database>().LifeStyle.Scoped())
[TestMethod]
public void SameDatabaseIsUsed()
{
using (container.BeginScope())
{
Consumer consumer = container.Resolve<Consumer>();
IFooRepository fooRepository = consumer.fooRepository;
IBarRepository barRepository = consumer.barRepository;
Assert.AreEqual(fooRepository.Database, barRepository.Database); // YAY!
}
}