/// <summary>
/// Resolves a value to an instance of <see cref="Lazy{T}"/>, where the lazily-loaded
/// object is an instance of <see cref="DataObject"/>.
/// </summary>
private static Object ResolveLazilyLoadedDataObject <T>(String value) where T : DataObject
{
var registry = DataObjectRegistries.Get <T>();
var reference = DataObjectRegistries.ResolveReference(value);
return(new Lazy <T>(() => registry.GetObject(reference)));
}
/// <summary>
/// Gets a <see cref="System.ComponentModel.TypeConverter.StandardValuesCollection"/> containing the object references defined by the specified data object registry.
/// </summary>
/// <returns>The <see cref="System.ComponentModel.TypeConverter.StandardValuesCollection"/> which was created.</returns>
private static StandardValuesCollection GetStandardValuesForRegistry()
{
var registry = DataObjectRegistries.Get <T>();
var keys = registry.Select(x => String.Format("@{0}:{1}", registry.ReferenceResolutionName, x.Key));
var references = (from k in keys
select(ResolvedDataObjectReference) ObjectResolver.FromString(k, typeof(ResolvedDataObjectReference))).ToList();
references.Insert(0, ResolvedDataObjectReference.Invalid);
return(new StandardValuesCollection(references));
}
/// <summary>
/// Translates the specified local identifier in this translation table
/// into the corresponding local identifier within the current process.
/// </summary>
/// <typeparam name="T">The type of data object being evaluated.</typeparam>
/// <param name="localID">The local identifier to translate.</param>
/// <returns>The translated local identifier.</returns>
public UInt16 Translate <T>(UInt16 localID) where T : DataObject
{
Guid globalID;
if (!TryGetValue(localID, out globalID))
{
return(0);
}
var registry = DataObjectRegistries.Get <T>();
var obj = registry.GetObject(globalID);
return((obj == null) ? (ushort)0 : obj.LocalID);
}
/// <summary>
/// Gets a value indicating whether the specified local identifier in this translation
/// table translates to an object that is valid within the current process.
/// </summary>
/// <typeparam name="T">The type of data object being evaluated.</typeparam>
/// <param name="localID">The local identifier of the entry within the translation table to validate.</param>
/// <returns><see langword="true"/> if the entry is valid; otherwise, <see langword="false"/>.</returns>
public Boolean IsValid <T>(UInt16 localID) where T : DataObject
{
Guid globalID;
if (!TryGetValue(localID, out globalID))
{
return(false);
}
var registry = DataObjectRegistries.Get <T>();
var obj = registry.GetObject(globalID);
return(obj != null);
}