private bool DoesNotHaveNoPoliciesAttributeRule(MethodImplementationInfo method)
{
bool doesNotHaveRule = true;
doesNotHaveRule &= method.InterfaceMethodInfo != null?doesNotHaveNoPoliciesAttributeRule.Matches(method.InterfaceMethodInfo) : true;
doesNotHaveRule &= doesNotHaveNoPoliciesAttributeRule.Matches(method.ImplementationMethodInfo);
return(doesNotHaveRule);
}
/// <summary>
/// Return ordered collection of handlers in order that apply to the given member.
/// </summary>
/// <param name="member">Member that may or may not be assigned handlers by this policy.</param>
/// <param name="container">The <see cref="IUnityContainer"/> to use when creating handlers,
/// if necessary.</param>
/// <returns>Collection of handlers (possibly empty) that apply to this member.</returns>
protected override IEnumerable <ICallHandler> DoGetHandlersFor(MethodImplementationInfo member, IUnityContainer container)
{
if (this.Matches(member))
{
foreach (string callHandlerName in this.callHandlerNames)
{
yield return(container.Resolve <ICallHandler>(callHandlerName));
}
}
}
/// <summary>
/// Checks if the rules in this policy match the given member info.
/// </summary>
/// <param name="member">MemberInfo to check against.</param>
/// <returns>true if ruleset matches, false if it does not.</returns>
protected override bool DoesMatch(MethodImplementationInfo member)
{
Unity.Utility.Guard.ArgumentNotNull(member, "member");
bool matchesInterface = member.InterfaceMethodInfo != null?this.ruleSet.Matches(member.InterfaceMethodInfo) : false;
bool matchesImplementation = this.ruleSet.Matches(member.ImplementationMethodInfo);
return(matchesInterface | matchesImplementation);
}
/// <summary>
/// Gets the policies in the <see cref="PolicySet"/> that do not
/// apply to the given member.
/// </summary>
/// <param name="member">Member to check.</param>
/// <returns>Collection of policies that do not apply to <paramref name="member"/>.</returns>
public IEnumerable <InjectionPolicy> GetPoliciesNotFor(MethodImplementationInfo member)
{
foreach (InjectionPolicy policy in this)
{
if (!policy.Matches(member))
{
yield return(policy);
}
}
}
/// <summary>
/// Determines whether the specified <see cref="T:System.Object" /> is equal to the current <see cref="T:System.Object" />.
/// </summary>
/// <returns>
/// true if the specified <see cref="T:System.Object" /> is equal to the current <see cref="T:System.Object" />; otherwise, false.
/// </returns>
/// <param name="obj">The <see cref="T:System.Object" /> to compare with the current <see cref="T:System.Object" />. </param>
/// <exception cref="T:System.NullReferenceException">The <paramref name="obj" /> parameter is null.</exception>
/// <filterpriority>2</filterpriority>
public override bool Equals(object obj)
{
MethodImplementationInfo other = obj as MethodImplementationInfo;
if (obj == null || other == null)
{
return(false);
}
return(this == other);
}
/// <summary>
/// Get the pipeline for the given method, creating it if necessary.
/// </summary>
/// <param name="method">Method to retrieve the pipeline for.</param>
/// <param name="handlers">Handlers to initialize the pipeline with</param>
/// <returns>True if the pipeline has any handlers in it, false if not.</returns>
public bool InitializePipeline(MethodImplementationInfo method, IEnumerable <ICallHandler> handlers)
{
Unity.Utility.Guard.ArgumentNotNull(method, "method");
var pipeline = CreatePipeline(method.ImplementationMethodInfo, handlers);
if (method.InterfaceMethodInfo != null)
{
pipelines[HandlerPipelineKey.ForMethod(method.InterfaceMethodInfo)] = pipeline;
}
return(pipeline.Count > 0);
}
/// <summary>
/// Derived classes implement this method to supply the list of handlers for
/// this specific member.
/// </summary>
/// <param name="member">Member to get handlers for.</param>
/// <param name="container">The <see cref="IUnityContainer"/> to use when creating handlers,
/// if necessary.</param>
/// <returns>Enumerable collection of handlers for this method.</returns>
protected override IEnumerable <ICallHandler> DoGetHandlersFor(MethodImplementationInfo member, IUnityContainer container)
{
if (member.InterfaceMethodInfo != null)
{
foreach (HandlerAttribute attr in ReflectionHelper.GetAllAttributes <HandlerAttribute>(member.InterfaceMethodInfo, true))
{
yield return(attr.CreateHandler(container));
}
}
foreach (HandlerAttribute attr in ReflectionHelper.GetAllAttributes <HandlerAttribute>(member.ImplementationMethodInfo, true))
{
yield return(attr.CreateHandler(container));
}
}
/// <summary>
/// Returns ordered collection of handlers in order that apply to the given member.
/// </summary>
/// <param name="member">Member that may or may not be assigned handlers by this policy.</param>
/// <param name="container">The <see cref="IUnityContainer"/> to use when creating handlers,
/// if necessary.</param>
/// <returns>Collection of handlers (possibly empty) that apply to this member.</returns>
public virtual IEnumerable <ICallHandler> GetHandlersFor(MethodImplementationInfo member, IUnityContainer container)
{
if (DoesNotHaveNoPoliciesAttributeRule(member))
{
List <ICallHandler> handlers = new List <ICallHandler>(DoGetHandlersFor(member, container));
if (handlers.Count > 0)
{
foreach (ICallHandler handler in handlers)
{
yield return(handler);
}
yield break;
}
}
}
internal static IEnumerable <ICallHandler> CalculateHandlersFor(
IEnumerable <InjectionPolicy> policies,
MethodImplementationInfo member,
IUnityContainer container)
{
List <ICallHandler> ordered = new List <ICallHandler>();
List <ICallHandler> nonOrdered = new List <ICallHandler>();
foreach (InjectionPolicy p in policies)
{
foreach (ICallHandler handler in p.GetHandlersFor(member, container))
{
if (handler.Order != 0)
{
bool inserted = false;
// add in order to ordered
for (int i = ordered.Count - 1; i >= 0; i--)
{
if (ordered[i].Order <= handler.Order)
{
ordered.Insert(i + 1, handler);
inserted = true;
break;
}
}
if (!inserted)
{
ordered.Insert(0, handler);
}
}
else
{
nonOrdered.Add(handler);
}
}
}
ordered.AddRange(nonOrdered);
return(ordered);
}
/// <summary>
/// Checks if the rules in this policy match the given member info.
/// </summary>
/// <param name="member">MemberInfo to check against.</param>
/// <returns>true if ruleset matches, false if it does not.</returns>
public bool Matches(MethodImplementationInfo member)
{
return(DoesNotHaveNoPoliciesAttributeRule(member) &&
DoesMatch(member));
}
/// <summary> /// Derived classes implement this method to supply the list of handlers for /// this specific member. /// </summary> /// <param name="member">Member to get handlers for.</param> /// <param name="container">The <see cref="IUnityContainer"/> to use when creating handlers, /// if necessary.</param> /// <returns>Enumerable collection of handlers for this method.</returns> protected abstract IEnumerable <ICallHandler> DoGetHandlersFor(MethodImplementationInfo member, IUnityContainer container);
/// <summary> /// Derived classes implement this method to calculate if the policy /// will provide any handler to the specified member. /// </summary> /// <param name="member">Member to check.</param> /// <returns>true if policy applies to this member, false if not.</returns> protected abstract bool DoesMatch(MethodImplementationInfo member);
/// <summary>
/// Gets the handlers that apply to the given member based on all policies in the <see cref="PolicySet"/>.
/// </summary>
/// <param name="member">Member to get handlers for.</param>
/// <param name="container">The <see cref="IUnityContainer"/> to use when creating handlers,
/// if necessary.</param>
/// <returns>Collection of call handlers for <paramref name="member"/>.</returns>
public IEnumerable <ICallHandler> GetHandlersFor(MethodImplementationInfo member, IUnityContainer container)
{
return(new List <ICallHandler>(CalculateHandlersFor(this, member, container)));
}