/// <summary>
/// Retrieve the local object.
/// </summary>
/// <param name="receiveContext">Context to find the local object by an identifier.</param>
/// <param name="localContextAction">How to modify the resolveContext once the object was retrieved.</param>
/// <returns>Local object.</returns>
public T Retrieve(ILocalReceiveContext receiveContext, LocalContextAction localContextAction)
{
object output = null;
bool itemFound = receiveContext.GuidToLocalObjects.TryGetValue(GlobalIdentifier, out output);
T item = (output != null) ? (T)output : default(T);
switch (localContextAction)
{
case LocalContextAction.LookupInsertIfNotFound:
if (!itemFound)
{
item = CreateLocalObject(receiveContext, localContextAction);
if (item != null)
{
receiveContext.GuidToLocalObjects[GlobalIdentifier] = item;
}
}
if (item != null)
{
return(item);
}
break;
case LocalContextAction.Delete:
if (!itemFound)
{
item = CreateLocalObject(receiveContext, localContextAction);
}
receiveContext.GuidToLocalObjects.Remove(GlobalIdentifier);
return(item);
}
return(item);
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="streamProvider">Stream provider to be used.</param>
/// <param name="receiveContext"></param>
/// <param name="tearDownFunc">Function to be executed after tear down.</param>
/// <param name="items"></param>
public TransactionalStreamRemoteObjectConsumer(IStreamProvider streamProvider, ILocalReceiveContext receiveContext, Func <Task> tearDownFunc = null, IList <T> items = null) : base(streamProvider, tearDownFunc)
{
Items = items ?? new List <T>();
ReceiveContext = receiveContext;
}
protected abstract T CreateLocalObject(ILocalReceiveContext resolveContext, LocalContextAction localContextAction);
/// <summary>
/// Retrieve the local object.
/// </summary>
/// <param name="receiveContext">Context to find the local object by an identifier.</param>
/// <param name="localContextAction">How to modify the receiveContext once the object was retrieved.</param>
/// <returns>Local object.</returns>
object IObjectRemoteValue.Retrieve(ILocalReceiveContext receiveContext, LocalContextAction localContextAction)
{
return(Retrieve(receiveContext, localContextAction));
}
