public static Identity GetIdentity(object item, DataDestination destination)
{
IdentityConfiguration[] keys = destination.GetIdentityKeys();
Identity identity = new Identity(item);
foreach(IdentityConfiguration ic in keys)
{
string key = ic.Property;
PropertyInfo pi = item.GetType().GetProperty(key);
if( pi != null )
{
try
{
identity[key] = pi.GetValue( item, new object[0] );
}
catch(Exception ex)
{
throw new FluorineException(__Res.GetString(__Res.Identity_Failed, key), ex);
}
}
else
{
try
{
FieldInfo fi = item.GetType().GetField(key, BindingFlags.Public | BindingFlags.Instance);
if( fi != null )
{
identity[key] = fi.GetValue( item );
}
}
catch(Exception ex)
{
throw new FluorineException(__Res.GetString(__Res.Identity_Failed, key), ex);
}
}
}
return identity;
}
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 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;
}
}
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 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;
}
private ItemWrapper GetItem(Identity identity)
{
lock(_objLock)
{
return _itemIdToItemHash[identity] as ItemWrapper;
}
}
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);
}
}
}
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;
}
}
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;
}
}
public int IndexOf(Identity identity)
{
return this.InnerList.IndexOf(identity);
}
public void Remove(Identity identity)
{
this.InnerList.Remove(identity);
}
public bool Contains(Identity identity)
{
return this.InnerList.Contains(identity);
}
public void Insert(int index, Identity identity)
{
this.InnerList.Insert(index, identity);
}
public int Add(Identity identity)
{
return this.InnerList.Add(identity);
}
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;
}
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;
}
}
public void RemoveIdentityFromSequence(Sequence sequence, Identity identity, DataServiceTransaction dataServiceTransaction)
{
RemoveIdentityFromSequence(sequence, identity, sequence.IndexOf(identity), dataServiceTransaction);
}
