/// <summary>
/// Добавить объект в кеш.
/// </summary>
/// <param name="dataobject">
/// Объект данных.
/// </param>
private void AddLivingDataObject(DataObject dataobject)
{
if (NoCaches)
{
throw new DOCacheNotFoundException();
}
WeakReference wr = new WeakReference(dataobject);
TypeKeyPair tkp = new TypeKeyPair(dataobject.GetType(), dataobject.__PrimaryKey);
if (_lastCacheIndex > _objectCaches.Count - 1)
{
LogService.LogDebug(_lastCacheIndex + ":" + _objectCaches.Count);
}
Dictionary <TypeKeyPair, WeakReference> sl = (Dictionary <TypeKeyPair, WeakReference>)_objectCaches[_lastCacheIndex];
try
{
sl.Remove(tkp);
}
catch
{
}
try
{
sl.Add(tkp, wr);
}
catch
{
}
}
/// <summary>
/// Сравнение двух пар.
/// </summary>
/// <param name="obj">Объект для сравнения.</param>
/// <returns>Результат сравнения.</returns>
public int CompareTo(object obj)
{
TypeKeyPair typeKeyPair = (TypeKeyPair)obj;
int result = Type.GetHashCode().CompareTo(typeKeyPair.Type.GetHashCode());
result = result == 0 ? ((IComparable)Key).CompareTo(typeKeyPair.Key) : result;
return(result);
}
/// <summary>
/// Получить "живой" внутри приложения объект данных по указанию
/// типа объекта данных и первичного ключа.
/// Возвращается null, если объект не найден или он уже "умер".
/// </summary>
/// <param name="typeofdataobject">
/// The typeofdataobject.
/// </param>
/// <param name="key">
/// The key.
/// </param>
/// <returns>
/// The <see cref="DataObject"/>.
/// </returns>
private DataObject PrvGetLivingDataObject(Type typeofdataobject, object key)
{
key = Information.TranslateValueToPrimaryKeyType(typeofdataobject, key);
DataObject result;
if (NoCaches)
{
return(null);
}
WeakReference wr = null;
try
{
Dictionary <TypeKeyPair, WeakReference> cacheList = (Dictionary <TypeKeyPair, WeakReference>)_objectCaches[_lastCacheIndex];
TypeKeyPair typeKeyPair = new TypeKeyPair(typeofdataobject, key);
if (cacheList.ContainsKey(typeKeyPair))
{
wr = cacheList[typeKeyPair];
}
}
catch (Exception ex)
{
LogService.LogDebug(ex);
}
if (wr != null)
{
if (wr.IsAlive)
{
result = (DataObject)wr.Target;
}
else
{
PrvRemoveLivingDataObject(typeofdataobject, key);
result = null;
}
}
else
{
result = null;
}
return(result);
}
/// <summary>
/// Удалить "живой" объект данных из кеша.
/// </summary>
/// <param name="typeofdataobject">
/// Тип объекта данных.
/// </param>
/// <param name="key">
/// Ключ объекта данных.
/// </param>
private void PrvRemoveLivingDataObject(Type typeofdataobject, object key)
{
if (!NoCaches)
{
key = Information.TranslateValueToPrimaryKeyType(typeofdataobject, key);
TypeKeyPair pairkey = new TypeKeyPair(typeofdataobject, key);
if (_lastCacheIndex == -1)
{
return;
}
Dictionary <TypeKeyPair, WeakReference> sl = (Dictionary <TypeKeyPair, WeakReference>)_objectCaches[_lastCacheIndex];
if (sl.ContainsKey(pairkey))
{
WeakReference wr = sl[pairkey];
if (!wr.IsAlive)
{
sl.Remove(pairkey);
}
}
}
}
