protected override object Resolve(CreationContext context, bool instanceRequired)
{
var implType = GetClosedImplementationType(context, instanceRequired);
if (implType == null)
{
Debug.Assert(instanceRequired == false, "instanceRequired == false");
return(null);
}
var handler = GetSubHandler(implType, context.RequestedType);
// so the generic version wouldn't be considered as well
using (context.EnterResolutionContext(this, false, false))
{
try
{
return(handler.Resolve(context));
}
catch (GenericHandlerTypeMismatchException e)
{
throw new HandlerException(
string.Format(
"Generic component {0} has some generic dependencies which were not successfully closed. This often happens when generic implementation has some additional generic constraints. See inner exception for more details.",
ComponentModel.Name), ComponentModel.ComponentName, e);
}
}
}
/// <summary>
/// Returns an instance of the component this handler
/// is responsible for
/// </summary>
/// <param name="context"></param>
/// <param name="requiresDecommission"></param>
/// <param name="instanceRequired"></param>
/// <param name="burden"></param>
/// <returns></returns>
protected object ResolveCore(CreationContext context, bool requiresDecommission, bool instanceRequired, out Burden burden)
{
if (IsBeingResolvedInContext(context))
{
var cache = lifestyleManager as IContextLifestyleManager;
if (cache != null)
{
var instance = cache.GetContextInstance(context);
if (instance != null)
{
burden = null;
return(instance);
}
}
if (instanceRequired == false)
{
burden = null;
return(null);
}
var message = new StringBuilder();
message.AppendFormat("Dependency cycle has been detected when trying to resolve component '{0}'.",
ComponentModel.Name);
message.AppendLine();
message.AppendLine("The resolution tree that resulted in the cycle is the following:");
context.BuildCycleMessageFor(this, message);
throw new CircularDependencyException(message.ToString(), ComponentModel);
}
if (CanResolvePendingDependencies(context) == false)
{
if (instanceRequired == false)
{
burden = null;
return(null);
}
AssertNotWaitingForDependency();
}
try
{
using (var ctx = context.EnterResolutionContext(this, requiresDecommission))
{
var instance = lifestyleManager.Resolve(context, context.ReleasePolicy);
burden = ctx.Burden;
return(instance);
}
}
catch (NoResolvableConstructorFoundException)
{
throw UnresolvableHandlerException();
}
}
public override object Resolve(CreationContext context)
{
Type implType = ComponentModel.Implementation.MakeGenericType(context.GenericArguments);
IHandler handler = GetSubHandler(context, implType);
// so the generic version wouldn't be considered as well
using(context.EnterResolutionContext(this, false))
{
return handler.Resolve(context);
}
}
protected override object Resolve(CreationContext context, bool instanceRequired)
{
var implType = GetClosedImplementationType(context, instanceRequired);
if (implType == null)
{
Debug.Assert(instanceRequired == false, "instanceRequired == false");
return(null);
}
var handler = GetSubHandler(context, implType);
// so the generic version wouldn't be considered as well
using (context.EnterResolutionContext(this, false, false))
{
return(handler.Resolve(context));
}
}
/// <summary>
/// Returns an instance of the component this handler
/// is responsible for
/// </summary>
/// <param name = "context"></param>
/// <param name = "requiresDecommission"></param>
/// <param name = "instanceRequired"></param>
/// <param name = "burden"></param>
/// <returns></returns>
protected object ResolveCore(CreationContext context, bool requiresDecommission, bool instanceRequired, out Burden burden)
{
if (CanResolvePendingDependencies(context) == false)
{
if (instanceRequired == false)
{
burden = null;
return(null);
}
AssertNotWaitingForDependency();
}
using (var ctx = context.EnterResolutionContext(this, requiresDecommission))
{
var instance = lifestyleManager.Resolve(context, context.ReleasePolicy);
burden = ctx.Burden;
return(instance);
}
}
/// <summary>
/// Returns an instance of the component this handler
/// is responsible for
/// </summary>
/// <param name="context"></param>
/// <param name="track"></param>
/// <returns></returns>
protected override object ResolveCore(CreationContext context, bool track)
{
if (!context.HasAdditionalParameters)
{
if (CurrentState != HandlerState.Valid && !CanResolvePendingDependencies(context))
{
AssertNotWaitingForDependency();
}
}
using(CreationContext.ResolutionContext resCtx = context.EnterResolutionContext(this))
{
object instance = lifestyleManager.Resolve(context);
resCtx.Burden.SetRootInstance(instance, this, track || ComponentModel.LifecycleSteps.HasDecommissionSteps);
context.ReleasePolicy.Track(instance, resCtx.Burden);
return instance;
}
}
