public override void PreBuildUp(IBuilderContext context)
{
Guard.ArgumentNotNull(context, "context");
if (!this.CanIntercept(context))
{
return;
}
IInstanceInterceptionPolicy interceptionPolicy = FindInterceptionPolicy <IInstanceInterceptionPolicy>(context, true);
if (null == interceptionPolicy)
{
IInstanceInterceptor interceptor = context.NewBuildUp <IInterceptor>(typeof(IInterceptor).AssemblyQualifiedName) as IInstanceInterceptor;
if (null == interceptor)
{
return;
}
if (!interceptor.CanIntercept(context.BuildKey.Type))
{
return;
}
context.Policies.Set <IInstanceInterceptionPolicy>(new FixedInstanceInterceptionPolicy(interceptor), context.BuildKey);
context.Policies.Clear <ITypeInterceptionPolicy>(context.BuildKey);
}
IInterceptionBehaviorsPolicy interceptionBehaviorsPolicy = FindInterceptionPolicy <IInterceptionBehaviorsPolicy>(context, true);
if (null == interceptionBehaviorsPolicy)
{
var policyInjectionBehavior = new InterceptionBehavior <PolicyInjectionBehavior>();
policyInjectionBehavior.AddPolicies(context.OriginalBuildKey.Type, context.BuildKey.Type, context.BuildKey.Name, context.Policies);
}
}
internal static InterceptionBehaviorsPolicy GetOrCreate <TPolicySet>(ref TPolicySet policies)
where TPolicySet : IPolicySet
{
IInterceptionBehaviorsPolicy policy = (IInterceptionBehaviorsPolicy)policies.Get(typeof(IInterceptionBehaviorsPolicy));
if (!(policy is InterceptionBehaviorsPolicy))
{
policy = new InterceptionBehaviorsPolicy();
policies.Set(typeof(IInterceptionBehaviorsPolicy), policy);
}
return((InterceptionBehaviorsPolicy)policy);
}
public override void PostBuildUp(IBuilderContext context)
{
Microsoft.Practices.Unity.Utility.Guard.ArgumentNotNull(context, "context");
// If it's already been intercepted, don't do it again.
if (context.Existing is IInterceptingProxy)
{
return;
}
IInstanceInterceptionPolicy interceptionPolicy =
FindInterceptionPolicy <IInstanceInterceptionPolicy>(context, true);
if (interceptionPolicy == null)
{
return;
}
var interceptor = interceptionPolicy.GetInterceptor(context);
IInterceptionBehaviorsPolicy interceptionBehaviorsPolicy =
FindInterceptionPolicy <IInterceptionBehaviorsPolicy>(context, true);
if (interceptionBehaviorsPolicy == null)
{
return;
}
IAdditionalInterfacesPolicy additionalInterfacesPolicy =
FindInterceptionPolicy <IAdditionalInterfacesPolicy>(context, false);
IEnumerable <Type> additionalInterfaces =
additionalInterfacesPolicy != null ? additionalInterfacesPolicy.AdditionalInterfaces : Type.EmptyTypes;
Type typeToIntercept = context.OriginalBuildKey.Type;
Type implementationType = context.Existing.GetType();
IInterceptionBehavior[] interceptionBehaviors =
interceptionBehaviorsPolicy.GetEffectiveBehaviors(
context, interceptor, typeToIntercept, implementationType)
.ToArray();
if (interceptionBehaviors.Length > 0)
{
context.Existing =
Intercept.ThroughProxyWithAdditionalInterfaces(
typeToIntercept,
context.Existing,
interceptor,
interceptionBehaviors,
additionalInterfaces);
}
}
internal static InterceptionBehaviorsPolicy GetOrCreate(
IPolicyList policies,
Type typeToCreate,
string name)
{
IInterceptionBehaviorsPolicy policy =
(IInterceptionBehaviorsPolicy)policies.Get(typeToCreate, name, typeof(IInterceptionBehaviorsPolicy), out _);
if (!(policy is InterceptionBehaviorsPolicy))
{
policy = new InterceptionBehaviorsPolicy();
policies.Set(typeToCreate, name, typeof(IInterceptionBehaviorsPolicy), policy);
}
return((InterceptionBehaviorsPolicy)policy);
}
internal static InterceptionBehaviorsPolicy GetOrCreate(
IPolicyList policies,
Type typeToCreate,
string name)
{
NamedTypeBuildKey key = new NamedTypeBuildKey(typeToCreate, name);
IInterceptionBehaviorsPolicy policy =
policies.GetNoDefault <IInterceptionBehaviorsPolicy>(key, false);
if (policy == null || !(policy is InterceptionBehaviorsPolicy))
{
policy = new InterceptionBehaviorsPolicy();
policies.Set(policy, key);
}
return((InterceptionBehaviorsPolicy)policy);
}
/// <summary>
/// GetOrDefault the set of <see cref="IInterceptionBehavior"/> object to be used for the given type and
/// interceptor.
/// </summary>
/// <remarks>
/// This method will return a sequence of <see cref="IInterceptionBehavior"/>s. These behaviors will
/// only be included if their <see cref="IInterceptionBehavior.WillExecute"/> properties are true.
/// </remarks>
/// <param name="context">Context for the current build operation.</param>
/// <param name="interceptor">Interceptor that will be used to invoke the behavior.</param>
/// <param name="typeToIntercept">Type that interception was requested on.</param>
/// <param name="implementationType">Type that implements the interception.</param>
/// <returns></returns>
public static IEnumerable <IInterceptionBehavior> GetEffectiveBehaviors(this IInterceptionBehaviorsPolicy policy,
ref BuilderContext context, IInterceptor interceptor,
Type typeToIntercept, Type implementationType)
{
return(policy.GetEffectiveBehaviors(context.Container, interceptor, typeToIntercept, implementationType));
}
