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;
}
}
private AcknowledgeMessage ExecuteGetSequenceIdOperation(IMessage message)
{
DataMessage dataMessage = message as DataMessage;
AcknowledgeMessage responseMessage = null;
DataDestination dataDestination = this.GetDestination(dataMessage) as DataDestination;
//2 cases: body set or identity set
if (dataMessage.body != null && dataMessage.body is IList)
{
dataMessage.operation = DataMessage.FillOperation;
IList result = dataDestination.ServiceAdapter.Invoke(message) as IList;//Fill returns an IList
responseMessage = dataDestination.SequenceManager.ManageSequence(dataMessage, result);
dataMessage.operation = DataMessage.GetSequenceIdOperation;
}
else
{
dataMessage.operation = DataMessage.GetOperation;
object result = dataDestination.ServiceAdapter.Invoke(message);
if (result != null)
{
ArrayList collection = new ArrayList(1);
collection.Add(result);
responseMessage = dataDestination.SequenceManager.ManageSequence(dataMessage, collection);
}
else
{
SequencedMessage sequencedMessage = new SequencedMessage();
sequencedMessage.sequenceId = -1;//no sequence
responseMessage = sequencedMessage;
}
dataMessage.operation = DataMessage.GetSequenceIdOperation;
}
return responseMessage;
}
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;
}
}
