internal void GenerateUpdateCollectionMessage(int updateType, DataDestination dataDestination, Sequence sequence, int position, Identity identity) {
UpdateCollectionMessage updateCollectionMessage = CreateUpdateCollectionMessage(dataDestination, sequence);
updateCollectionMessage.AddItemIdentityChange(updateType, position, identity);
if (updateCollectionMessage.collectionId != null)
_updateCollectionMessages[updateCollectionMessage.collectionId] = updateCollectionMessage;
else {
//without fill parameters
_updateCollectionMessages[new object[0]] = updateCollectionMessage;
}
}
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;
}
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;
}
public PagedMessage GetPagedMessage(DataMessage dataMessage, Sequence sequence) {
int pageSize = (int)dataMessage.headers[DataMessage.PageSizeHeader];
int pageIndex = 0;
if (dataMessage.headers.ContainsKey(DataMessage.PageIndexHeader))
pageIndex = (int)dataMessage.headers[DataMessage.PageIndexHeader];
pageIndex = Math.Max(0, pageIndex);//negative pageIndex???
int pageCount = (int)Math.Ceiling((double)sequence.Size / pageSize);
int pageStart = pageIndex * pageSize;
int pageEnd = Math.Min(pageStart + pageSize, sequence.Size);
PagedMessage pagedMessage = new PagedMessage();
pagedMessage.pageIndex = pageIndex;
pagedMessage.pageCount = pageCount;
pagedMessage.sequenceSize = sequence.Size;
pagedMessage.sequenceId = sequence.Id;
object[] pagedResult = new object[pageEnd - pageStart];
lock (_objLock) {
for (int i = pageStart; i < pageEnd; i++) {
Identity identity = sequence[i];
//pagedResult.Add( _itemIdToItemHash[identity] );
if (_itemIdToItemHash.Contains(identity))
pagedResult[i - pageStart] = (_itemIdToItemHash[identity] as ItemWrapper).Instance;
}
}
pagedMessage.body = pagedResult;
pagedMessage.destination = dataMessage.destination;
pagedMessage.dataMessage = dataMessage;
return pagedMessage;
}
public SequencedMessage GetSequencedMessage(DataMessage dataMessage, Sequence sequence) {
if (dataMessage.headers != null && dataMessage.headers.ContainsKey(DataMessage.PageSizeHeader)) {
return GetPagedMessage(dataMessage, sequence);
} else {
SequencedMessage sequencedMessage = new SequencedMessage();
sequencedMessage.destination = dataMessage.destination;
sequencedMessage.sequenceId = sequence.Id;
sequencedMessage.sequenceSize = sequence.Size;
//object[] body = new object[result.Count];
//result.CopyTo(body, 0);
object[] body = new object[sequence.Count];
lock (_objLock) {
for (int i = 0; i < sequence.Count; i++) {
ItemWrapper itemWrapper = GetItem(sequence[i]) as ItemWrapper;
if (itemWrapper != null)
body[i] = itemWrapper.Instance;
}
}
sequencedMessage.body = body;
sequencedMessage.sequenceProxies = null;
sequencedMessage.dataMessage = dataMessage;
sequencedMessage.messageId = dataMessage.messageId;
sequencedMessage.clientId = dataMessage.clientId;
sequencedMessage.correlationId = dataMessage.messageId;
//dataMessage.identity = new Hashtable(0);
return sequencedMessage;
}
}
public void RemoveSubscriberFromSequence(string clientId, Sequence sequence) {
if (sequence != null) {
if (log.IsDebugEnabled)
log.Debug(__Res.GetString(__Res.SequenceManager_RemoveSubscriberSeq, clientId, sequence.Id));
lock (_objLock) {
if (_clientIdToSequenceHash.Contains(clientId)) {
ArrayList sequences = _clientIdToSequenceHash[clientId] as ArrayList;
for (int i = 0; i < sequences.Count; i++) {
Sequence sequenceTmp = sequences[i] as Sequence;
if (sequence == sequenceTmp) {
sequence.RemoveSubscriber(clientId);
//Delete the sequence if there are no subscribers left
if (sequence.SubscriberCount == 0) {
if (log.IsDebugEnabled)
log.Debug(__Res.GetString(__Res.SequenceManager_RemoveEmptySeq, sequence.Id));
RemoveSequence(sequence.Id);
}
sequences.RemoveAt(i);//remove this sequence from client's list
break;
}
}
}
}
}
}
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);
}
}
}
public Sequence RefreshSequence(Sequence sequence, DataMessage dataMessage, object item, DataServiceTransaction dataServiceTransaction) {
if (sequence.Parameters == null)
return sequence;
DotNetAdapter dotNetAdapter = _dataDestination.ServiceAdapter as DotNetAdapter;
if (dotNetAdapter != null) {
bool isCreate = (dataMessage.operation == DataMessage.CreateOperation || dataMessage.operation == DataMessage.CreateAndSequenceOperation);
int fill = dotNetAdapter.RefreshFill(sequence.Parameters, item, isCreate);
switch (fill) {
case Assembler.ExecuteFill: {
IList parameters = sequence.Parameters;
//if (parameters == null)
// parameters = new object[0];
DataMessage fillDataMessage = new DataMessage();
fillDataMessage.clientId = dataMessage.clientId;
fillDataMessage.operation = DataMessage.FillOperation;
fillDataMessage.body = parameters != null ? parameters : new object[0];
IList result = _dataDestination.ServiceAdapter.Invoke(fillDataMessage) as IList;
return CreateSequence(dataMessage.clientId as string, result, parameters, dataServiceTransaction);
}
case Assembler.AppendToFill: {
Identity identity = Identity.GetIdentity(item, _dataDestination);
if (!sequence.Contains(identity))
AddIdentityToSequence(sequence, identity, dataServiceTransaction);
_itemIdToItemHash[identity] = new ItemWrapper(item);
}
break;
case Assembler.RemoveFromFill: {
Identity identity = Identity.GetIdentity(item, _dataDestination);
if (sequence.Contains(identity))
RemoveIdentityFromSequence(sequence, identity, dataServiceTransaction);
}
break;
case Assembler.DoNotExecuteFill:
break;
}
}
return sequence;
}
public Sequence CreateSequence(string clientId, IList result, IList parameters, DataServiceTransaction dataServiceTransaction) {
Sequence sequence = null;
Identity[] identities = new Identity[result.Count];
lock (_objLock) {
for (int i = 0; i < identities.Length; i++) {
if (result[i] != null) {
Identity identity = Identity.GetIdentity(result[i], _dataDestination);
identities[i] = identity;
if (!_itemIdToItemHash.ContainsKey(identity))
_itemIdToItemHash.Add(identity, new ItemWrapper(result[i]));
else {
ItemWrapper itemWrapper = _itemIdToItemHash[identity] as ItemWrapper;
itemWrapper.Instance = result[i];
}
}
}
//Lookup existing sequence
if (parameters != null) {
if (_parametersToSequenceIdHash.Contains(parameters))
sequence = _parametersToSequenceIdHash[parameters] as Sequence;
} else {
IDictionary sequenceIdMap = _itemIdToSequenceIdMapHash[identities[0]] as IDictionary;
if (sequenceIdMap != null) {
foreach (Sequence sequenceTmp in sequenceIdMap.Values) {
if (sequenceTmp.Parameters == null) {
sequence = sequenceTmp;
break;
}
}
}
}
//if (parameters == null)
// parameters = new ArrayList();
if (sequence == null) {
sequence = new Sequence();
sequence.Id = sequence.GetHashCode();
object[] parametersArray = null;
if (parameters != null) {
parametersArray = new object[parameters.Count];
parameters.CopyTo(parametersArray, 0);
sequence.Parameters = parametersArray;
_parametersToSequenceIdHash[parameters] = sequence;
}
for (int i = 0; i < identities.Length; i++) {
Identity identity = identities[i];
AddIdentityToSequence(sequence, identity, dataServiceTransaction);
}
_sequenceIdToSequenceHash[sequence.Id] = sequence;
if (log.IsDebugEnabled)
log.Debug(__Res.GetString(__Res.SequenceManager_CreateSeq, sequence.Id, clientId));
} else {
for (int i = 0; i < identities.Length; i++) {
Identity identity = identities[i];
Identity existingIdentity = null;
if (i < sequence.Count)
existingIdentity = sequence[i];
if (!identity.Equals(existingIdentity)) {
//Identity not found in sequence
if (!sequence.Contains(identity)) {
int position = AddIdentityToSequence(sequence, identity, dataServiceTransaction);
}
}
}
}
sequence.AddSubscriber(clientId);
ArrayList sequences;
if (_clientIdToSequenceHash.Contains(clientId))
sequences = _clientIdToSequenceHash[clientId] as ArrayList;
else {
sequences = new ArrayList();
_clientIdToSequenceHash[clientId] = sequences;
}
if (!sequences.Contains(sequence))
sequences.Add(sequence);
}
return sequence;
}
public void RemoveIdentityFromSequence(Sequence sequence, Identity identity, int position, DataServiceTransaction dataServiceTransaction) {
if (position == -1)
return;
lock (_objLock) {
IDictionary sequenceIdMap = _itemIdToSequenceIdMapHash[identity] as IDictionary;
if (sequenceIdMap != null) {
sequenceIdMap.Remove(sequence.Id);
//Release the item if it does'n occur in any sequence
if (sequenceIdMap.Count == 0) {
_itemIdToItemHash.Remove(identity);
_itemIdToSequenceIdMapHash.Remove(identity);
}
if (sequence[position].Equals(identity))
sequence.RemoveAt(position);
else
sequence.Remove(identity);
if (dataServiceTransaction != null)
dataServiceTransaction.GenerateUpdateCollectionMessage(UpdateCollectionRange.DeleteFromCollection, _dataDestination, sequence, position, identity);
} else {
_itemIdToItemHash.Remove(identity);
sequence.Remove(identity);
}
}
}
public void RemoveIdentityFromSequence(Sequence sequence, Identity identity, DataServiceTransaction dataServiceTransaction) {
RemoveIdentityFromSequence(sequence, identity, sequence.IndexOf(identity), dataServiceTransaction);
}
public int AddIdentityToSequence(Sequence sequence, Identity identity, DataServiceTransaction dataServiceTransaction) {
return AddIdentityToSequence(sequence, -1, identity, dataServiceTransaction);
}
public int AddIdentityToSequence(Sequence sequence, int position, Identity identity, DataServiceTransaction dataServiceTransaction) {
lock (_objLock) {
if (position == -1 || position > sequence.Size)
position = sequence.Add(identity);
else
sequence.Insert(position, identity);
IDictionary sequenceIdMap = _itemIdToSequenceIdMapHash[identity] as IDictionary;
if (sequenceIdMap == null) {
sequenceIdMap = new Hashtable();
_itemIdToSequenceIdMapHash[identity] = sequenceIdMap;
}
sequenceIdMap[sequence.Id] = sequence;
if (dataServiceTransaction != null)
dataServiceTransaction.GenerateUpdateCollectionMessage(UpdateCollectionRange.InsertIntoCollection, _dataDestination, sequence, position, identity);
return position;
}
}
