private void SetPrerequisiteImports()
{
IEnumerable <ImportDefinition> members = ImportDefinitions.Where(import => import.IsPrerequisite);
// NOTE: Dev10 484204 The validation is turned off for post imports because of it broke declarative composition
UseImportedValues(members, SetExportedValueForImport, false);
}
private object[] GetConstructorArguments()
{
ReflectionParameterImportDefinition[] parameterImports = ImportDefinitions.OfType <ReflectionParameterImportDefinition>().ToArray();
object[] arguments = new object[parameterImports.Length];
UseImportedValues(
parameterImports,
(import, definition, value) =>
{
if (definition.Cardinality == ImportCardinality.ZeroOrMore && !import.ImportType.IsAssignableCollectionType)
{
throw new ComposablePartException(
string.Format(CultureInfo.CurrentCulture,
SR.ReflectionModel_ImportManyOnParameterCanOnlyBeAssigned,
Definition.GetPartType().FullName,
definition.ImportingLazyParameter.Value.Name),
Definition.ToElement());
}
arguments[definition.ImportingLazyParameter.Value.Position] = value;
},
true);
return(arguments);
}
/// <summary>
/// Create a PartDefinitionInfo representing partDefinition.
/// </summary>
/// <param name="partDefinition">The part to be analyzed.</param>
public PartDefinitionInfo(ComposablePartDefinition partDefinition)
{
PartDefinition = partDefinition;
ImportDefinitions = Enumerable.Empty <ImportDefinitionInfo>();
_isRejected = new Lazy <bool>(() => ImportDefinitions
.Any(idi => idi.Exception is ImportCardinalityMismatchException));
}
/// <summary>
/// If the part is rejected, find the most likely parts in the composition
/// that caused this rejection.
/// </summary>
/// <param name="maximumAnalysisDepth">The maximum depth of the composition
/// graph to be inspected.</param>
/// <returns></returns>
public IEnumerable <PartDefinitionInfo> FindPossibleRootCauses(int maximumAnalysisDepth)
{
return(ImportDefinitions
.Where(id => id.IsBroken)
.SelectMany(id => id
.UnsuitableExportDefinitions
.Where(ed => ed.PartDefinition.IsRejected && ed.PartDefinition != this)
.SelectMany(ed => ed.PartDefinition.FindPossibleRootCauses(--maximumAnalysisDepth))
.Take(maximumAnalysisDepth))
.Append(this)
.Where(pd => pd.IsPrimaryRejection)
.Distinct()
.ToArray());
}
// alwayc called under a lock
private bool RequiresActivation()
{
// If we have any imports then we need activation
// (static imports are not supported)
if (ImportDefinitions.Any())
{
return(true);
}
// If we have any instance exports, then we also
// need activation.
return(ExportDefinitions.Any(definition =>
{
ExportingMember member = GetExportingMemberFromDefinition(definition);
return member.RequiresInstance;
}));
}
// this is called under a lock
private void EnsureGettable()
{
// If we're already composed then we know that
// all pre-req imports have been satisfied
if (_initialCompositionComplete)
{
return;
}
// Make sure all pre-req imports have been set
foreach (ImportDefinition definition in ImportDefinitions.Where(definition => definition.IsPrerequisite))
{
if (!this._importValues.ContainsKey(definition))
{
throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture,
Strings.InvalidOperation_GetExportedValueBeforePrereqImportSet,
definition.ToElement().DisplayName));
}
}
}
/// <summary>
/// Determine whether the part imports a contract.
/// </summary>
/// <param name="contract">Name of the contract to check for.</param>
/// <returns>True if the part imports the contract.</returns>
public bool ImportsContract(string contract)
{
return(ImportDefinitions.Any(id => id.ImportDefinition.ContractName == contract));
}