// <summary>This method is applicable only to objects represnting types and
// checks if this type is the same or subtype of specified type</summary>
/// <param name="superType">version history representing object type</param>
/// <param name="kind">search kind</param>
/// <param name="timestamp">timestamp used to locate version</param>
/// <returns>true if this type is the same or is subtype of specified type</returns>
public bool IsSubTypeOf(VersionHistory superType, SearchKind kind, DateTime timestamp)
{
if (vh == superType)
{
return(true);
}
foreach (VersionHistory subtype in this[Symbols.Subtype])
{
if (kind == SearchKind.AllVersions)
{
foreach (Thing type in subtype.versions)
{
if (type.IsSubTypeOf(superType, kind, timestamp))
{
return(true);
}
}
}
else
{
Thing type = subtype.GetVersion(kind, timestamp);
if (type != null && type.IsSubTypeOf(superType, kind, timestamp))
{
return(true);
}
}
}
return(false);
}
/// <summary>Check if object belongs to the partiular type</summary>
/// <param name="superType">version history representing object type</param>
/// <param name="kind">search kind</param>
/// <param name="timestamp">timestamp used to locate version</param>
/// <returns>true if type of the object is the same or is subtype of specified type</returns>
public bool IsInstanceOf(VersionHistory superType, SearchKind kind, DateTime timestamp)
{
return(type.IsSubTypeOf(superType, kind, timestamp));
}
