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;
}
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);
}
}
}
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;
}
