Hi there,
The issue IOC-ISSUE-208 was just created by Gilles Bisson (Gilles Bisson).
Key: IOC-ISSUE-208
Summary: Bad dispose order of a singleton object with a dependency on a
transcient object
Type: Bug
Importance: High
Description:
When a singleton object depends on a transcient object, disposal order
of the two objects is wrong upon container disposal.
The following test illustrate this behavior :
public class DisposeOrderTestFixture
{
interface IMyService : IInitializable, IDisposable
{
bool IsInitialized { get; }
bool IsInUse { get; set; }
}
interface IMyComponent : IInitializable, IDisposable
{
bool IsInitialized { get; }
}
class MyService : IMyService
{
#region
private bool m_isInUse;
#endregion
#region IMyService Members
public bool IsInitialized { get; private set; }
public bool IsInUse
{
get
{
if(IsInitialized == false)
{
throw new ApplicationException("Service must be initialized !!!");
}
return m_isInUse;
}
set
{
if (IsInitialized == false)
{
throw new ApplicationException("Service must be initialized !!!");
}
m_isInUse = value;
}
}
#endregion
#region IInitializable Members
public void Initialize()
{
IsInitialized = true;
}
#endregion
#region IDisposable Members
public void Dispose()
{
if(IsInUse)
{
throw new ApplicationException("Cannot dispose : service is still in
use !!!");
}
IsInitialized = false;
}
#endregion
}
class MyComponent : IMyComponent
{
#region Attributes
private readonly IMyService m_service;
#endregion
#region Constructor
public MyComponent(IMyService service)
{
m_service = service;
}
#endregion
#region IMyComponent Members
public bool IsInitialized { get; private set; }
#endregion
#region IInitializable Members
public void Initialize()
{
m_service.IsInUse = true;
IsInitialized = true;
}
#endregion
#region IDisposable Members
public void Dispose()
{
IsInitialized = false;
m_service.IsInUse = false;
}
#endregion
}
class MyInstaller : IWindsorInstaller
{
#region IWindsorInstaller Members
public void Install(IWindsorContainer container, IConfigurationStore
store)
{
container.Register(Component.For<IMyService>().ImplementedBy<MyService>().LifeStyle.Transient);
container.Register(Component.For<IMyComponent>().ImplementedBy<MyComponent>());
}
#endregion
}
[Test]
public void ShouldDisposeComponentsInProperOrder()
{
var installer = new MyInstaller();
var container = new WindsorContainer();
container.Install(installer);
var component = container.Resolve<IMyComponent>();
container.Release(component);
container.Dispose();
}
}
For more, see
http://support.castleproject.org/projects/IOC/issues/view/IOC-ISSUE-208
--
donjon
by Castle Stronghold
http://www.castle-donjon.com
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