public User GetDocumentLockOwner(Item item)
{
User lockOwner;
if (LockedDocumentRegistry.TryGetValue(item.Id, out lockOwner))
{
return(lockOwner);
}
return(null);
}
public void RemoveAllLocksForUser(User user)
{
List <long> idList = LockedDocumentRegistry.
Where(entry => entry.Value.Id == user.Id).
Select(entry => entry.Key).
ToList();
foreach (long itemId in idList)
{
User lockOwner;
LockedDocumentRegistry.TryRemove(itemId, out lockOwner);
}
}
public bool TryLockDocument(Item item, User user)
{
lock (documentLocker) {
User lockOwner = GetDocumentLockOwner(item);
if (lockOwner != null)
{
if (user.Id != lockOwner.Id)
{
return(false);
}
}
else
{
LockedDocumentRegistry.AddOrUpdate(item.Id, user, (itemId, oldUser) => user);
}
return(true);
}
}
