public static string GetNextId(string id, IIdentifiedObject obj, string group)
{
string suggestedId = id;
int count = 1;
while (UniqueIDCache.IsIdInUse(suggestedId, obj, group))
{
suggestedId = id + "-" + count.ToString();
count++;
}
return(suggestedId);
}
public static bool IsIdInUse(string id, IIdentifiedObject obj, string group)
{
if (id == null)
{
throw new ArgumentNullException(nameof(id));
}
if (group == null)
{
throw new ArgumentNullException(nameof(@group));
}
HashSet <IIdentifiedObject> itemGroup = UniqueIDCache.GetGroupCollection(group);
return(itemGroup.Any(t => t.ID == id && t != obj));
}
public static void RemoveItem(IIdentifiedObject item, string group)
{
if (item == null)
{
throw new ArgumentNullException(nameof(item));
}
if (group == null)
{
throw new ArgumentNullException(nameof(@group));
}
HashSet <IIdentifiedObject> itemGroup = UniqueIDCache.GetGroupCollection(group);
if (itemGroup.Contains(item))
{
itemGroup.Remove(item);
}
}
public static void AddItem(IIdentifiedObject item, string group)
{
if (item == null)
{
throw new ArgumentNullException(nameof(item));
}
if (group == null)
{
throw new ArgumentNullException(nameof(@group));
}
HashSet <IIdentifiedObject> itemGroup = UniqueIDCache.GetGroupCollection(group);
if (itemGroup.Any(t => t.ID == item.ID))
{
throw new ArgumentException(string.Format("The specified id '{0}' is already in use in group {1}", item.ID, group));
}
else
{
itemGroup.Add(item);
}
}
public static string SetID(IIdentifiedObject obj, string proposedValue, string groupName, bool canRename)
{
string newID = proposedValue;
string oldID = obj.ID;
if (proposedValue != null)
{
if (obj.ID == null)
{
if (UniqueIDCache.IsIdInUse(proposedValue, obj, groupName))
{
if (canRename)
{
newID = UniqueIDCache.GetNextId(proposedValue, obj, groupName);
}
else
{
throw new DuplicateIdentifierException();
}
}
else
{
newID = proposedValue;
}
}
else if (UniqueIDCache.CanChangeId(groupName, obj, proposedValue))
{
newID = proposedValue;
}
else
{
throw new DuplicateIdentifierException();
}
}
return(newID);
}
public static bool CanChangeId(string group, IIdentifiedObject item, string newId)
{
HashSet <IIdentifiedObject> itemGroup = UniqueIDCache.GetGroupCollection(group);
return(!itemGroup.Any(t => t.ID == newId && t != item));
}
public static void ClearIdCache(string group)
{
UniqueIDCache.GetGroupCollection(group).Clear();
}
public static bool HasObject(string group, IIdentifiedObject item)
{
return(UniqueIDCache.GetGroupCollection(group).Contains(item));
}
