public void InjectProperties(IComponentContext context, object instance, bool overrideSetValues)
{
if (context == null) throw new ArgumentNullException("context");
if (instance == null) throw new ArgumentNullException("instance");
var instanceType = instance.GetType();
foreach (var property in instanceType.GetProperties(
BindingFlags.Public | BindingFlags.Instance | BindingFlags.SetProperty))
{
var propertyType = property.PropertyType;
if (propertyType.IsValueType && !propertyType.IsEnum)
continue;
if (property.GetIndexParameters().Length != 0)
continue;
if (!context.IsRegistered(propertyType))
continue;
var accessors = property.GetAccessors(false);
if (accessors.Length == 1 && accessors[0].ReturnType != typeof(void))
continue;
if (!overrideSetValues &&
accessors.Length == 2 &&
(property.GetValue(instance, null) != null))
continue;
IComponentRegistration registration;
var service = new TypedService(propertyType);
if (!context.ComponentRegistry.TryGetRegistration(service, out registration))
throw new ComponentNotRegisteredException(service);
var lookup = context.ResolveLookup(service, registration, Enumerable.Empty<Parameter>());
try
{
if (lookup.Preparing)
lookup.SharedInstanceActivation += (s, ea) => property.SetValue(instance, s, null);
else
{
var propertyValue = lookup.Factory();
property.SetValue(instance, propertyValue, null);
}
}
catch (DependencyResolutionException dre)
{
dre.Lookups.Push(lookup);
throw;
}
}
}
/// <summary>
/// Resolve an instance of the provided registration within the context.
/// </summary>
/// <param name="context">provided context</param>
/// <param name="service">Service which is trying to be resolved</param>
/// <param name="registration">The registration.</param>
/// <param name="parameters">Parameters for the instance.</param>
/// <returns>
/// The component instance.
/// </returns>
/// <exception cref="ComponentNotRegisteredException"/>
/// <exception cref="Revenj.Extensibility.Autofac.Core.DependencyResolutionException"/>
public static object ResolveComponent(this IComponentContext context, Service service, IComponentRegistration registration, IEnumerable <Parameter> parameters)
{
var lookup = context.ResolveLookup(service, registration, parameters);
try
{
return(lookup.Factory());
}
catch (DependencyResolutionException dre)
{
dre.Lookups.Push(lookup);
throw;
}
}
/// <summary>
/// Returns true if the parameter is able to provide a value to a particular site.
/// </summary>
/// <param name="pi">Constructor, method, or property-mutator parameter.</param>
/// <param name="context">The component context in which the value is being provided.</param>
/// <param name="valueProvider">If the result is true, the valueProvider parameter will
/// be set to a function that will lazily retrieve the parameter value. If the result is false,
/// will be set to null.</param>
/// <returns>True if a value can be supplied; otherwise, false.</returns>
public override bool CanSupplyValue(ParameterInfo pi, IComponentContext context, out Func<object> valueProvider)
{
IComponentRegistration registration;
var ts = new TypedService(pi.ParameterType);
if (context.ComponentRegistry.TryGetRegistration(ts, out registration))
{
var lookup = context.ResolveLookup(ts, registration, Enumerable.Empty<Parameter>());
try
{
valueProvider = lookup.Factory;
}
catch (DependencyResolutionException dre)
{
dre.Lookups.Push(lookup);
throw;
}
return true;
}
valueProvider = null;
return false;
}
/// <summary>
/// Returns true if the parameter is able to provide a value to a particular site.
/// </summary>
/// <param name="pi">Constructor, method, or property-mutator parameter.</param>
/// <param name="context">The component context in which the value is being provided.</param>
/// <param name="valueProvider">If the result is true, the valueProvider parameter will
/// be set to a function that will lazily retrieve the parameter value. If the result is false,
/// will be set to null.</param>
/// <returns>True if a value can be supplied; otherwise, false.</returns>
public override bool CanSupplyValue(ParameterInfo pi, IComponentContext context, out Func <object> valueProvider)
{
IComponentRegistration registration;
var ts = new TypedService(pi.ParameterType);
if (context.ComponentRegistry.TryGetRegistration(ts, out registration))
{
var lookup = context.ResolveLookup(ts, registration, Enumerable.Empty <Parameter>());
try
{
valueProvider = lookup.Factory;
}
catch (DependencyResolutionException dre)
{
dre.Lookups.Push(lookup);
throw;
}
return(true);
}
valueProvider = null;
return(false);
}
/// <summary>
/// Try to retrieve a service from the context.
/// </summary>
/// <param name="context">The context from which to resolve the service.</param>
/// <param name="service">The service to resolve.</param>
/// <param name="instance">The resulting component instance providing the service, or null.</param>
/// <param name="parameters">The parameters.</param>
/// <returns>
/// True if a component providing the service is available.
/// </returns>
/// <exception cref="DependencyResolutionException"/>
public static bool TryResolveService(this IComponentContext context, Service service, IEnumerable <Parameter> parameters, out object instance)
{
IComponentRegistration registration;
if (!context.ComponentRegistry.TryGetRegistration(service, out registration))
{
instance = null;
return(false);
}
var lookup = context.ResolveLookup(service, registration, parameters);
try
{
instance = lookup.Factory();
}
catch (DependencyResolutionException dre)
{
dre.Lookups.Push(lookup);
throw;
}
return(true);
}
public void InjectProperties(IComponentContext context, object instance, bool overrideSetValues)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
if (instance == null)
{
throw new ArgumentNullException("instance");
}
var instanceType = instance.GetType();
foreach (var property in instanceType.GetProperties(
BindingFlags.Public | BindingFlags.Instance | BindingFlags.SetProperty))
{
var propertyType = property.PropertyType;
if (propertyType.IsValueType && !propertyType.IsEnum)
{
continue;
}
if (property.GetIndexParameters().Length != 0)
{
continue;
}
if (!context.IsRegistered(propertyType))
{
continue;
}
var accessors = property.GetAccessors(false);
if (accessors.Length == 1 && accessors[0].ReturnType != typeof(void))
{
continue;
}
if (!overrideSetValues &&
accessors.Length == 2 &&
(property.GetValue(instance, null) != null))
{
continue;
}
IComponentRegistration registration;
var service = new TypedService(propertyType);
if (!context.ComponentRegistry.TryGetRegistration(service, out registration))
{
throw new ComponentNotRegisteredException(service);
}
var lookup = context.ResolveLookup(service, registration, Enumerable.Empty <Parameter>());
try
{
if (lookup.Preparing)
{
lookup.SharedInstanceActivation += (s, ea) => property.SetValue(instance, s, null);
}
else
{
var propertyValue = lookup.Factory();
property.SetValue(instance, propertyValue, null);
}
}
catch (DependencyResolutionException dre)
{
dre.Lookups.Push(lookup);
throw;
}
}
}
