private static void DisplayDebugWarnings(ImportCardinality cardinality, ReflectionItem item, ImportType importType)
{
if ((importType.ElementType == ExportType) || (importType.Type == ExportType))
{
System.Diagnostics.Debug.WriteLine(string.Format(System.Globalization.CultureInfo.CurrentCulture, "{0} : Imports of type Export are no longer supported", item.GetDisplayName()));
}
// Output a debug warning if someone is using ImportAttribute where it looks like they might want to use ImportMany
if (cardinality != ImportCardinality.ZeroOrMore && CollectionServices.GetEnumerableElementType(importType.Type) != null)
{
System.Diagnostics.Debug.WriteLine("May want to use ImportMany on " + item.GetDisplayName());
}
}
private static IAttributedImport GetAttributedImport(ReflectionItem item, ICustomAttributeProvider attributeProvider)
{
IAttributedImport[] imports = attributeProvider.GetAttributes<IAttributedImport>(false);
// For constructor parameters they may not have an ImportAttribute
if (imports.Length == 0)
{
return new ImportAttribute();
}
if (imports.Length == 1)
{
return imports[0];
}
// DiscoveryError (Dev10:602872): This should go through the discovery error reporting when
// we add a way to report discovery errors properly.
throw ExceptionBuilder.CreateDiscoveryException(Strings.Discovery_MultipleImportAttributes, item.GetDisplayName());
}
internal static void MemberMarkedWithMultipleImportAndImportMany(ReflectionItem item)
{
Assumes.NotNull(item);
if (CompositionTraceSource.CanWriteError)
{
CompositionTraceSource.WriteError(CompositionTraceId.Discovery_MemberMarkedWithMultipleImportAndImportMany,
Strings.CompositionTrace_Discovery_MemberMarkedWithMultipleImportAndImportMany,
item.GetDisplayName());
}
}
