private UpdateCollectionMessage CreateUpdateCollectionMessage(DataDestination dataDestination, Sequence sequence)
{
UpdateCollectionMessage updateCollectionMessage = new UpdateCollectionMessage();
updateCollectionMessage.clientId = this.ClientId;
updateCollectionMessage.updateMode = UpdateCollectionMessage.ServerUpdate;
// The unique identifier for the collection that was updated. For a collection filled with the
// DataService.fill() method this contains an Array of the parameters specified.
updateCollectionMessage.collectionId = sequence.Parameters;
updateCollectionMessage.destination = dataDestination.Id;
updateCollectionMessage.correlationId = this.CorrelationId;
updateCollectionMessage.messageId = "srv:" + Guid.NewGuid().ToString("D") + ":" + _idCounter.ToString();
System.Threading.Interlocked.Increment(ref _idCounter);
return updateCollectionMessage;
}
internal void AddClientUpdateCollection(UpdateCollectionMessage updateCollectionMessage)
{
_clientUpdateCollectionMessages[updateCollectionMessage.collectionId] = updateCollectionMessage;
}
private UpdateCollectionMessage CreateUpdateCollectionMessage(DataMessage dataMessage, Sequence sequence, Identity identity, int position, int updateMode)
{
UpdateCollectionMessage updateCollectionMessage = new UpdateCollectionMessage();
// The unique identifier for the collection that was updated. For a collection filled with the
// DataService.fill() method this contains an Array of the parameters specified.
updateCollectionMessage.collectionId = sequence.Parameters;
updateCollectionMessage.destination = dataMessage.destination;
updateCollectionMessage.replace = false;
updateCollectionMessage.updateMode = updateMode;
updateCollectionMessage.messageId = "srv:" + Guid.NewGuid().ToString("D") + ":0";
updateCollectionMessage.correlationId = dataMessage.correlationId;
UpdateCollectionRange updateCollectionRange = new UpdateCollectionRange();
// An Array of identity objects that represent which items were either deleted or inserted in the
// associated collection starting at the position indicated by the position property
updateCollectionRange.identities = new object[1];
//(updateCollectionRange.identities as IList).Add( identity );
(updateCollectionRange.identities as object[])[0] = identity;
updateCollectionRange.updateType = UpdateCollectionRange.InsertIntoCollection;
updateCollectionRange.position = position;
//ArrayList body = new ArrayList();
//body.Add(updateCollectionRange);
object[] body = new object[1]; body[0] = updateCollectionRange;
updateCollectionMessage.body = body;
return updateCollectionMessage;
}
private IMessage UpdateCollection(UpdateCollectionMessage updateCollectionMessage, IList messages)
{
IList updateCollectionRanges = updateCollectionMessage.body as IList;
for(int i = 0; i < updateCollectionRanges.Count; i++)
{
UpdateCollectionRange updateCollectionRange = updateCollectionRanges[i] as UpdateCollectionRange;
for(int j = 0; j < updateCollectionRange.identities.Length; j++)
{
string messageId = updateCollectionRange.identities[j] as string;
Identity identity = null;
if( messageId != null )
{
//Search for previous Create or CreateAndSequence
//This was a "pending update collection" sent from the client and it must be replaced by the actual Identity
IMessage refMessage = GetMessage(messages, messageId);
DataMessage dataMessage = refMessage as DataMessage;
if( dataMessage != null )
{
DataDestination dataDestination = this.Destination as DataDestination;
identity = Identity.GetIdentity(dataMessage.body, dataDestination);
}
//replace with the actual identity
updateCollectionRange.identities[j] = identity;
}
else
{
IDictionary identityMap = updateCollectionRange.identities[j] as IDictionary;
if( identityMap != null )
identity = new Identity(identityMap);
}
IList fillParameters = updateCollectionMessage.collectionId as IList;
IAssembler assembler = GetAssembler();
if( assembler != null )
{
if( updateCollectionRange.updateType == UpdateCollectionRange.InsertIntoCollection )
assembler.AddItemToFill(fillParameters, updateCollectionRange.position + j ,identity);
if( updateCollectionRange.updateType == UpdateCollectionRange.DeleteFromCollection )
assembler.RemoveItemFromFill(fillParameters, updateCollectionRange.position ,identity);
}
}
}
return updateCollectionMessage;
}
void ApplyUpdateCollectionMessage(Sequence sequence, UpdateCollectionMessage updateCollectionMessage)
{
IList updateCollectionRanges = updateCollectionMessage.body as IList;
for(int k = 0; k < updateCollectionRanges.Count; k++)
{
UpdateCollectionRange updateCollectionRange = updateCollectionRanges[k] as UpdateCollectionRange;
int insertCount = 0;
for(int l = 0; l < updateCollectionRange.identities.Length; l++)
{
Identity identity = updateCollectionRange.identities[l] as Identity;
if( identity == null )
{
identity = new Identity(updateCollectionRange.identities[l] as IDictionary);
}
if( updateCollectionRange.updateType == UpdateCollectionRange.InsertIntoCollection )
{
this.AddIdentityToSequence(sequence, updateCollectionRange.position + insertCount, identity, null);
insertCount++;
}
if( updateCollectionRange.updateType == UpdateCollectionRange.DeleteFromCollection )
this.RemoveIdentityFromSequence(sequence, identity, updateCollectionRange.position, null);
}
}
}