private IList Fill(DataMessage dataMessage) {
IList result = null;
IAssembler assembler = GetAssembler();
if (assembler != null) {
IList parameters = dataMessage.body as IList;
if (log != null && log.IsDebugEnabled)
log.Debug(assembler.GetType().FullName + " Fill");
result = assembler.Fill(parameters);
return result;
}
return null;
}
public void ReleaseItemOperation(DataMessage dataMessage) {
//TODO
int sequenceId = (int)dataMessage.headers[DataMessage.SequenceIdHeader];
Sequence sequence = GetSequence(sequenceId);
}
public void ReleaseCollectionOperation(DataMessage dataMessage) {
lock (_objLock) {
int sequenceId = (int)dataMessage.headers[DataMessage.SequenceIdHeader];
if (log != null && log.IsDebugEnabled)
log.Debug(__Res.GetString(__Res.SequenceManager_ReleaseCollection, sequenceId, dataMessage.clientId));
Sequence sequence = GetSequence(sequenceId);
IList parameters = dataMessage.body as IList;
RemoveSubscriberFromSequence(dataMessage.clientId as string, sequence);
}
}
public SequencedMessage GetPageItems(DataMessage dataMessage) {
int sequenceId = (int)dataMessage.headers[DataMessage.SequenceIdHeader];
Sequence sequence = GetSequence(sequenceId);
if (sequence != null) {
IList DSids = dataMessage.headers["DSids"] as IList;
//ArrayList items = new ArrayList(DSids.Count);
SequencedMessage sequencedMessage = new SequencedMessage();
object[] items = new object[DSids.Count];
lock (_objLock) {
for (int i = 0; i < DSids.Count; i++) {
Identity identity = new Identity(DSids[i] as IDictionary);
ItemWrapper itemWrapper = GetItem(identity);
//items.Add(item);
items[i] = itemWrapper.Instance;
}
sequencedMessage.destination = dataMessage.destination;
sequencedMessage.sequenceId = sequence.Id;
sequencedMessage.sequenceSize = sequence.Size;
sequencedMessage.sequenceProxies = null;
sequencedMessage.body = items;
}
return sequencedMessage;
} else {
DataServiceException dse = new DataServiceException(string.Format("Sequence {0} in destination {1} was not found", sequenceId, dataMessage.destination));
throw dse;
}
}
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;
}
}
private IMessage Update(DataMessage dataMessage) {
IList parameters = dataMessage.body as IList;
IList changeObject = parameters[0] as IList;
if (changeObject == null || changeObject.Count == 0)
return dataMessage;
IAssembler assembler = GetAssembler();
if (assembler != null) {
if (log != null && log.IsDebugEnabled)
log.Debug(assembler.GetType().FullName + " Update");
assembler.UpdateItem(parameters[2], parameters[1], parameters[0] as IList);
}
return dataMessage;
}
/// <summary>
/// Send an update event to clients subscribed to this message. Note that this method does not send
/// the change to the adapter/assembler - it assumes that the changes have already been applied
/// or are being applied. It only updates the clients with the new version of this data.
///
/// You must supply a destination parameter and a new version of the object. If you supply a
/// non-null previous version, this object is used to detect conflicts on the client in case
/// the client's version of the data does not match the previous version. You may also supply
/// a list of property names that have changed as a hint to the client to indicate which properties
/// should be checked for conflicts and updated. If you supply null for the changes, all
/// properties on the client are updated. These property names do not accept any kind of dot
/// notation to specify that a property of a property has changed. Only top level property
/// names are allowed.
/// </summary>
/// <param name="destination">Name of the Data Management Services destination that is managing the item you want to update.</param>
/// <param name="newVersion">New version of the item to update. The identity of the item is used to determine which item to update.</param>
/// <param name="previousVersion">If not null, this contains a version of the item you intend to update. The client can detect a conflict if its version does not match the previousVersion. If you specify the value as null, a conflict is only detected if the client has pending changes for the item being updated.</param>
/// <param name="changes">Array of property names which are to be updated. You can provide a null value to indicate that all property values may have changed.</param>
public void UpdateItem(string destination, object newVersion, object previousVersion, string[] changes) {
DataMessage dataMessage = new DataMessage();
DataDestination dataDestination = _dataService.GetDestination(destination) as DataDestination;
object[] body = new object[3];
body[0] = changes;
body[2] = newVersion;
body[1] = previousVersion;
dataMessage.operation = DataMessage.UpdateOperation;
dataMessage.body = body;
dataMessage.destination = destination;
if (_clientId != null)
dataMessage.clientId = _clientId;
else
dataMessage.clientId = "srv:" + Guid.NewGuid().ToString("D");
dataMessage.identity = Identity.GetIdentity(newVersion, dataDestination);
dataMessage.messageId = "srv:" + Guid.NewGuid().ToString("D") + ":" + _idCounter.ToString();
System.Threading.Interlocked.Increment(ref _idCounter);
ArrayList messages = new ArrayList(1);
messages.Add(dataMessage);
MessageBatch messageBatch = new MessageBatch(dataMessage, messages);
_processedMessageBatches.Add(messageBatch);
}
public PagedMessage GetPage(DataMessage dataMessage) {
int sequenceId = (int)dataMessage.headers[DataMessage.SequenceIdHeader];
Sequence sequence = GetSequence(sequenceId);
if (sequence != null)
return GetPagedMessage(dataMessage, sequence);
else {
DataServiceException dse = new DataServiceException(string.Format("Sequence {0} in destination {1} was not found", sequenceId, dataMessage.destination));
throw dse;
}
}
public AcknowledgeMessage ManageSequence(DataMessage dataMessage, IList items) {
return ManageSequence(dataMessage, items, null);
}
public MessageBatch(DataMessage incomingMessage, IList messages) {
_incomingMessage = incomingMessage;
_messages = messages;
}
private object GetItem(DataMessage dataMessage) {
object result = null;
IAssembler assembler = GetAssembler();
if (assembler != null) {
if (log != null && log.IsDebugEnabled)
log.Debug(assembler.GetType().FullName + " GetItem");
result = assembler.GetItem(dataMessage.identity);
return result;
}
return null;
}
private IList Batch(DataMessage dataMessage) {
ArrayList result = new ArrayList();
IList messageBatch = dataMessage.body as IList;
for (int i = 0; i < messageBatch.Count; i++) {
IMessage message = messageBatch[i] as IMessage;
try {
if (message is UpdateCollectionMessage) {
result.Add(UpdateCollection(message as UpdateCollectionMessage, messageBatch));
} else {
object obj = Invoke(message);
result.Add(obj);
}
} catch (DataSyncException dataSyncException) {
DataErrorMessage dataErrorMessage = dataSyncException.GetErrorMessage() as DataErrorMessage;
dataErrorMessage.cause = message as DataMessage;
dataErrorMessage.correlationId = message.messageId;
dataErrorMessage.destination = message.destination;
result.Add(dataErrorMessage);
} catch (Exception exception) {
MessageException messageException = new MessageException(exception);
ErrorMessage errorMessage = messageException.GetErrorMessage();
errorMessage.correlationId = message.messageId;
errorMessage.destination = message.destination;
result.Add(errorMessage);
}
}
return result;
}
private IMessage Delete(DataMessage dataMessage) {
IAssembler assembler = GetAssembler();
if (assembler != null) {
if (log != null && log.IsDebugEnabled)
log.Debug(assembler.GetType().FullName + " Delete");
assembler.DeleteItem(dataMessage.body);
}
return dataMessage;
}
private IMessage Create(DataMessage dataMessage) {
IAssembler assembler = GetAssembler();
if (assembler != null) {
if (log != null && log.IsDebugEnabled)
log.Debug(assembler.GetType().FullName + " CreateItem");
assembler.CreateItem(dataMessage.body);
Identity identity = Identity.GetIdentity(dataMessage.body, this.Destination as DataDestination);
dataMessage.identity = identity;
}
return dataMessage;
}
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 AcknowledgeMessage ManageSequence(DataMessage dataMessage, IList items, DataServiceTransaction dataServiceTransaction) {
AcknowledgeMessage acknowledgeMessage = null;
switch (dataMessage.operation) {
case DataMessage.FillOperation: {
Sequence sequence = CreateSequence(dataMessage.clientId as string, items, dataMessage.body as IList, dataServiceTransaction);
acknowledgeMessage = GetSequencedMessage(dataMessage, sequence);
}
break;
case DataMessage.GetOperation:
case DataMessage.GetSequenceIdOperation: {
Sequence sequence = CreateSequence(dataMessage.clientId as string, items, null, dataServiceTransaction);
acknowledgeMessage = GetSequencedMessage(dataMessage, sequence);
}
break;
default: {
if (log != null && log.IsErrorEnabled)
log.Error(__Res.GetString(__Res.SequenceManager_Unknown, dataMessage.operation));
}
break;
}
return acknowledgeMessage;
}
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;
}
void SyncSequenceChanges(DataMessage dataMessage, DataServiceTransaction dataServiceTransaction) {
lock (_objLock) {
ArrayList sequenceList = new ArrayList(_sequenceIdToSequenceHash.Values.Count);
sequenceList.AddRange(_sequenceIdToSequenceHash.Values);//Hashtable may be changed here
foreach (Sequence sequence in sequenceList) {
switch (dataMessage.operation) {
case DataMessage.CreateOperation:
case DataMessage.CreateAndSequenceOperation:
RefreshSequence(sequence, dataMessage, dataMessage.body, dataServiceTransaction);
break;
case DataMessage.DeleteOperation: {
//RefreshSequence(sequence, dataMessage, dataMessage.body, dataServiceTransaction);
Identity identity = Identity.GetIdentity(dataMessage.body, _dataDestination);
int index = sequence.IndexOf(identity);
if (index != -1)
RemoveIdentityFromSequence(sequence, identity, dataServiceTransaction);
}
break;
case DataMessage.UpdateOperation:
RefreshSequence(sequence, dataMessage, (dataMessage.body as IList)[2], dataServiceTransaction);
break;
}
}
}
}
private void ProcessRefreshFills() {
for (int i = 0; _refreshFills != null && i < _refreshFills.Count; i++) {
RefreshFillData refreshFill = _refreshFills[i] as RefreshFillData;
DataDestination dataDestination = _dataService.GetDestination(refreshFill.Destination) as DataDestination;
if (dataDestination == null)
throw new FluorineException(__Res.GetString(__Res.Destination_NotFound, refreshFill.Destination));
ICollection sequences = dataDestination.SequenceManager.GetSequences(refreshFill.Parameters);
if (sequences != null) {
lock (dataDestination.SequenceManager.SyncRoot) {
foreach (Sequence sequence in sequences) {
DataMessage dataMessage = new DataMessage();
dataMessage.operation = DataMessage.FillOperation;
if (sequence.Parameters != null)
dataMessage.body = sequence.Parameters;
else
dataMessage.body = new object[0];
if (_clientId != null)
dataMessage.clientId = _clientId;
else
dataMessage.clientId = "srv:" + Guid.NewGuid().ToString("D");
IList result = dataDestination.ServiceAdapter.Invoke(dataMessage) as IList;
if (result.Count > 0) {
Sequence sequenceTmp = dataDestination.SequenceManager.CreateSequence(dataMessage.clientId as string, result, sequence.Parameters, this);
}
}
}
}
}
}
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;
}
/// <summary>
/// This version of the deleteItem method does not provide for conflict detection if the item has been modified before the delete occurs; it is deleted.
/// </summary>
/// <param name="destination">Name of the destination containing the item to be deleted.</param>
/// <param name="identity">A Hashtable containing entries for each of the id properties for this item (the key is the id property name, the value is its value).</param>
public void DeleteItemWithId(string destination, Hashtable identity) {
DataMessage dataMessage = new DataMessage();
DataDestination dataDestination = _dataService.GetDestination(destination) as DataDestination;
dataMessage.operation = DataMessage.DeleteOperation;
dataMessage.body = null;
dataMessage.destination = destination;
if (_clientId != null)
dataMessage.clientId = _clientId;
else
dataMessage.clientId = "srv:" + Guid.NewGuid().ToString("D");
dataMessage.identity = identity;
dataMessage.messageId = "srv:" + Guid.NewGuid().ToString("D") + ":" + _idCounter.ToString();
System.Threading.Interlocked.Increment(ref _idCounter);
ArrayList messages = new ArrayList(1);
messages.Add(dataMessage);
MessageBatch messageBatch = new MessageBatch(dataMessage, messages);
AddProcessedMessageBatch(messageBatch);
}
private MessageBatch ServiceBatch(IMessage message, ArrayList messages) {
//Send a DataMessage.BatchedOperation to the specific adapter
DataMessage dataMessage = messages[0] as DataMessage;
DataMessage adapterDataMessage = null;
if (messages.Count == 1 && dataMessage.operation == DataMessage.BatchedOperation)
adapterDataMessage = dataMessage;
else {
adapterDataMessage = new DataMessage();
adapterDataMessage.destination = dataMessage.destination;
adapterDataMessage.operation = DataMessage.BatchedOperation;
adapterDataMessage.body = messages;
adapterDataMessage.headers = message.headers;
adapterDataMessage.clientId = message.clientId;
}
DataDestination dataDestination = GetDestination(dataMessage) as DataDestination;
IList result = dataDestination.ServiceAdapter.Invoke(adapterDataMessage) as IList;
MessageBatch messageBatch = new MessageBatch(adapterDataMessage, result);
return messageBatch;
}
