/// <summary>
/// Links the <c>item</c> to the <see cref="instanceRegistry"/> (overwrite any existing)
/// </summary>
/// <param name="item">The item.</param>
/// <param name="key">The key.</param>
/// <exception cref="ArgumentOutOfRangeException">item - The ObjectTable is not in linkable mode - IsInstanceLinkActive = false</exception>
protected virtual void LinkBase(object item, string key = null)
{
if (!IsInstanceLinkActive)
{
throw new ArgumentOutOfRangeException("item", item, "The ObjectTable is not in linkable mode - IsInstanceLinkActive = false");
}
if (item == null)
{
return;
}
if (item is IObjectTableEntry)
{
if (instanceRegistry.ContainsKey(key))
{
instanceRegistry.TryAdd(key, item as IObjectTableEntry);
}
else
{
if (key.isNullOrEmpty())
{
key = GetKeyValue(item);
}
IObjectTableEntry removedItem = null;
instanceRegistry.TryRemove(key, out removedItem);
instanceRegistry.TryAdd(key, item as IObjectTableEntry);
}
}
}
/// <summary>
/// Removes the specified item.
/// </summary>
/// <param name="item">The item.</param>
/// <returns></returns>
protected bool Remove(object item)
{
if (ReadOnlyEnforce())
{
return(false);
}
if (ContainsObject(item))
{
string keyValue = GetKeyValue(item);
if (keyCache.Contains(keyValue))
{
keyCache.TryTake(out keyValue);
}
string select_exp = GetPrimaryKeySelect(keyValue);
DataRow[] rows = tableSelect(select_exp);
if (rows.Any())
{
lock (ContainsKeyLock)
{
foreach (DataRow dr in rows)
{
table.Rows.Remove(dr);
}
}
if (IsInstanceLinkActive)
{
IObjectTableEntry removedItem = null;
instanceRegistry.TryRemove(keyValue, out removedItem);
return(removedItem != null);
}
return(true);
}
else
{
return(false);
}
}
else
{
return(false);
}
}
/// <summary>
/// Adds the or updates. Returns <c>true</c> if new row was added
/// </summary>
/// <param name="input">The input.</param>
/// <param name="policy">The policy.</param>
/// <returns></returns>
protected bool AddOrUpdate(object input, objectTableUpdatePolicy policy = objectTableUpdatePolicy.overwrite)
{
if (ReadOnlyEnforce())
{
return(false);
}
if (input == null)
{
return(false);
}
if (!input.GetType().isCompatibileWith(type))
{
return(false);
}
bool output = false;
string keyValue = GetKeyValue(input);
//if (keyValue.isNullOrEmpty())
//{
// aceLog.log("keyValue is null => " + name + " : " + GetType().Name);
//}
if (IsInstanceLinkActive)
{
if (instanceRegistry.ContainsKey(keyValue))
{
IObjectTableEntry item = input as IObjectTableEntry;
if (instanceRegistry.TryUpdate(keyValue, item, item))
{
output = false;
}
}
}
Boolean _exists = false;
DataRow[] rows = null;
if (!WriteOnlyEnforce())
{
string select_exp = GetPrimaryKeySelect(keyValue);
rows = tableSelect(select_exp);
_exists = rows.Any();
}
if (_exists)
{
SetRowWithObject(rows.First(), input, policy);
output = false;
}
else
{
SetRowWithObject(null, input, objectTableUpdatePolicy.overwrite);
output = true;
}
if (IsInstanceLinkActive)
{
if (!instanceRegistry.ContainsKey(keyValue))
{
IObjectTableEntry item = input as IObjectTableEntry;
if (instanceRegistry.TryAdd(keyValue, item))
{
output = true;
}
}
}
if (output)
{
lastEntry = input;
}
return(output);
}
