public override long VersionForId(int id)
{
MsgD msg = Msg.VersionForId.GetWriterForInt(SystemTransaction(), id);
_client.Write(msg);
return(_client.ExpectedBufferResponse(Msg.VersionForId).ReadLong());
}
public override ClassMetadata ClassMetadataForID(int clazzId)
{
if (clazzId == 0)
{
return(null);
}
ClassMetadata yc = base.ClassMetadataForID(clazzId);
if (yc != null)
{
return(yc);
}
MsgD msg = Msg.ClassNameForId.GetWriterForInt(SystemTransaction(), clazzId);
Write(msg);
MsgD message = (MsgD)ExpectedResponse(Msg.ClassNameForId);
string className = Config().ResolveAliasStoredName(message.ReadString());
if (className != null && className.Length > 0)
{
IReflectClass claxx = Reflector().ForName(className);
if (claxx != null)
{
return(ProduceClassMetadata(claxx));
}
}
// TODO inform client class not present
return(null);
}
public void WriteBatchedMessages()
{
lock (Lock())
{
if (_batchedMessages.IsEmpty())
{
return;
}
Msg msg;
MsgD multibytes = Msg.WriteBatchedMessages.GetWriterForLength(Transaction, _batchedQueueLength
);
multibytes.WriteInt(_batchedMessages.Size());
IEnumerator iter = _batchedMessages.GetEnumerator();
while (iter.MoveNext())
{
msg = (Msg)iter.Current;
if (msg == null)
{
multibytes.WriteInt(0);
}
else
{
multibytes.WriteInt(msg.PayLoad().Length());
multibytes.PayLoad().Append(msg.PayLoad()._buffer);
}
}
WriteMessageToSocket(multibytes);
ClearBatchedObjects();
}
}
public sealed override void WriteNew(Transaction trans, Pointer4 pointer, ClassMetadata
classMetadata, ByteArrayBuffer buffer)
{
MsgD msg = Msg.WriteNew.GetWriter(trans, pointer, classMetadata, buffer);
WriteBatchedMessage(msg);
}
public sealed override void WriteUpdate(Transaction trans, Pointer4 pointer, ClassMetadata
classMetadata, ArrayType arrayType, ByteArrayBuffer buffer)
{
MsgD msg = Msg.WriteUpdate.GetWriter(trans, pointer, classMetadata, arrayType.Value
(), buffer);
WriteBatchedMessage(msg);
}
public override AbstractQueryResult QueryAllObjects(Transaction trans)
{
int mode = Config().EvaluationMode().AsInt();
MsgD msg = Msg.GetAll.GetWriterForInts(trans, new int[] { mode, PrefetchDepth(),
PrefetchCount() });
Write(msg);
return(ReadQueryResult(trans));
}
public override void ReadBytes(byte[] a_bytes, int a_address, int a_length)
{
MsgD msg = Msg.ReadSlot.GetWriterForInts(_transaction, new int[] { a_address, a_length });
Write(msg);
ByteArrayBuffer reader = ExpectedBufferResponse(Msg.ReadSlot);
System.Array.Copy(reader._buffer, 0, a_bytes, 0, a_length);
}
public override int InstanceCount(ClassMetadata clazz, Transaction trans)
{
MsgD msg = Msg.InstanceCount.GetWriterForInt(trans, clazz.GetID());
Write(msg);
MsgD response = (MsgD)ExpectedResponse(Msg.InstanceCount);
return(response.ReadInt());
}
private int AskServer(MsgD message, int param)
{
_client.Write(message.GetWriterForInts(_transaction, new[]
{
_queryResultID,
param
}));
return(((MsgD)_client.ExpectedResponse(message)).ReadInt());
}
public sealed override bool Delete4(Transaction ta, ObjectReference yo, object obj
, int a_cascade, bool userCall)
{
MsgD msg = Msg.Delete.GetWriterForInts(_transaction, new int[] { yo.GetID(), userCall
? 1 : 0 });
WriteBatchedMessage(msg);
return(true);
}
public override int ClassMetadataIdForName(string name)
{
MsgD msg = Msg.ClassMetadataIdForName.GetWriterForString(SystemTransaction(), name
);
msg.Write(_socket);
MsgD response = (MsgD)ExpectedResponse(Msg.ClassId);
return(response.ReadInt());
}
public override IQueryResult ExecuteQuery(QQuery query)
{
Transaction trans = query.Transaction();
query.CaptureQueryResultConfig();
query.Marshall();
MsgD msg = Msg.QueryExecute.GetWriter(Serializer.Marshall(trans, query));
Write(msg);
return(ReadQueryResult(trans));
}
public override bool Delete(ObjectReference @ref, int id, int cascade)
{
if (!base.Delete(@ref, id, cascade))
{
return(false);
}
MsgD msg = Msg.TaDelete.GetWriterForInts(this, new int[] { id, cascade });
_client.WriteBatchedMessage(msg);
return(true);
}
private void AssertPrefetchingBehaviorFor(IQuery query, MsgD expectedFirstMessage
)
{
StoreFlatItemGraph();
Client().Config().PrefetchObjectCount(2);
Client().Config().PrefetchDepth(1);
AssertQueryIterationProtocol(query, expectedFirstMessage, new PrefetchConfigurationTestCase.Stimulus
[] { new PrefetchConfigurationTestCase.Stimulus(new MsgD[] { }), new PrefetchConfigurationTestCase.Stimulus
(new MsgD[] { }), new PrefetchConfigurationTestCase.Stimulus(new MsgD[] { Msg.ReadMultipleObjects }), new PrefetchConfigurationTestCase.Stimulus(new MsgD[] { }), new PrefetchConfigurationTestCase.Stimulus
(new MsgD[] { Msg.ReadMultipleObjects }) });
}
private long[] GetIDsForClass(Transaction trans, ClassMetadata clazz, bool triggerQueryEvents
)
{
MsgD msg = Msg.GetInternalIds.GetWriterForInts(trans, new int[] { clazz.GetID(),
PrefetchDepth(), PrefetchCount(), triggerQueryEvents ? 1 : 0 });
Write(msg);
ByRef result = ByRef.NewInstance();
WithEnvironment(new _IRunnable_901(this, trans, result));
return((long[])result.value);
}
private ByteArrayBuffer FetchSlotBuffer(Transaction transaction, int id, bool lastCommitted
)
{
MsgD msg = Msg.ReadReaderById.GetWriterForInts(transaction, new int[] { id, lastCommitted
? 1 : 0 });
Write(msg);
ByteArrayBuffer buffer = ((MReadBytes)ExpectedResponse(Msg.ReadBytes)).Unmarshall
();
return(buffer);
}
private void AssertNonRecoverableExceptionForMessage(MsgD message, Exception throwable
)
{
// Make sure the ClassMetadata of the exception is in the
// ObjectContainer otherwise we get side effects from producing it.
IReflectClass reflectClass = Client().Reflector().ForClass(throwable.GetType());
Client().ProduceClassMetadata(reflectClass);
_storage.SyncAllowed(false);
Client().Write(message.GetWriterForSingleObject(Trans(), throwable));
AssertDatabaseClosedException();
AssertServerContainerStateClosed(true);
}
public override bool IsDeleted(Transaction trans, int id)
{
// This one really is a hack.
// It only helps to get information about the current
// transaction.
// We need a better strategy for C/S concurrency behaviour.
MsgD msg = Msg.TaIsDeleted.GetWriterForInt(trans, id);
Write(msg);
int res = ExpectedBufferResponse(Msg.TaIsDeleted).ReadInt();
return(res == 1);
}
private void SendReadMultipleObjectsMessage(MReadMultipleObjects message, Transaction
transaction, int prefetchDepth, IList idsToRead)
{
MsgD msg = message.GetWriterForLength(transaction, Const4.IntLength + Const4.IntLength
+ Const4.IdLength * idsToRead.Count);
msg.WriteInt(prefetchDepth);
msg.WriteInt(idsToRead.Count);
for (IEnumerator idIter = idsToRead.GetEnumerator(); idIter.MoveNext();)
{
int id = ((int)idIter.Current);
msg.WriteInt(id);
}
Write(msg);
}
// do nothing
public override bool SetSemaphore(Transaction trans, string name, int timeout)
{
lock (_lock)
{
CheckClosed();
trans = CheckTransaction(trans);
if (name == null)
{
throw new ArgumentNullException();
}
MsgD msg = Msg.SetSemaphore.GetWriterForIntString(trans, timeout, name);
Write(msg);
Msg message = GetResponse();
return(message.Equals(Msg.Success));
}
}
public sealed override StatefulBuffer ReadStatefulBufferById(Transaction a_ta, int
a_id, bool lastCommitted)
{
MsgD msg = Msg.ReadObject.GetWriterForInts(a_ta, new int[] { a_id, lastCommitted ?
1 : 0 });
Write(msg);
StatefulBuffer bytes = ((MsgObject)ExpectedResponse(Msg.ObjectToClient)).Unmarshall
();
if (bytes != null)
{
bytes.SetTransaction(a_ta);
}
return(bytes);
}
public sealed override HardObjectReference GetHardReferenceBySignature(Transaction
trans, long uuid, byte[] signature)
{
int messageLength = Const4.LongLength + Const4.IntLength + signature.Length;
MsgD message = Msg.ObjectByUuid.GetWriterForLength(trans, messageLength);
message.WriteLong(uuid);
message.WriteInt(signature.Length);
message.WriteBytes(signature);
Write(message);
message = (MsgD)ExpectedResponse(Msg.ObjectByUuid);
int id = message.ReadInt();
if (id > 0)
{
return(GetHardObjectReferenceById(trans, id));
}
return(HardObjectReference.Invalid);
}
/// <exception cref="System.IO.IOException"></exception>
internal virtual Socket4Adapter CreateParallelSocket()
{
Write(Msg.GetThreadId);
int serverThreadID = ExpectedBufferResponse(Msg.IdList).ReadInt();
Socket4Adapter sock = _socket.OpenParalellSocket();
LoginToServer(sock);
if (switchedToFile != null)
{
MsgD message = Msg.SwitchToFile.GetWriterForString(SystemTransaction(), switchedToFile
);
message.Write(sock);
if (!(Msg.Ok.Equals(Msg.ReadMessage(this, SystemTransaction(), sock))))
{
throw new IOException(Db4objects.Db4o.Internal.Messages.Get(42));
}
}
Msg.UseTransaction.GetWriterForInt(_transaction, serverThreadID).Write(sock);
return(sock);
}
public sealed override int IdForNewUserObject(Transaction trans)
{
int prefetchIDCount = Config().PrefetchIDCount();
EnsureIDCacheAllocated(prefetchIDCount);
ByteArrayBuffer reader = null;
if (remainingIDs < 1)
{
MsgD msg = Msg.PrefetchIds.GetWriterForInt(_transaction, prefetchIDCount);
Write(msg);
reader = ExpectedBufferResponse(Msg.IdList);
for (int i = prefetchIDCount - 1; i >= 0; i--)
{
_prefetchedIDs[i] = reader.ReadInt();
}
remainingIDs = prefetchIDCount;
}
remainingIDs--;
return(_prefetchedIDs[remainingIDs]);
}
private void FetchMissingSlotBuffers(Transaction transaction, ArrayList missing,
IDictionary buffers, int prefetchDepth)
{
if (missing.Count == 0)
{
return;
}
int safePrefetchDepth = Math.Max(1, prefetchDepth);
SendReadMultipleObjectsMessage(Msg.ReadMultipleObjects, transaction, safePrefetchDepth
, missing);
MsgD response = (MsgD)ExpectedResponse(Msg.ReadMultipleObjects);
IEnumerator slots = new CacheContributingObjectReader((ClientTransaction)transaction
, _clientSlotCache, response.PayLoad()).Buffers();
while (slots.MoveNext())
{
Pair pair = ((Pair)slots.Current);
buffers[((int)pair.first)] = ((ByteArrayBuffer)pair.second);
}
}
private void AssertQueryIterationProtocol(IQuery query, MsgD expectedResultMessage
, Stimulus[] stimuli)
{
var messages = MessageCollector.ForServerDispatcher(ServerDispatcher());
var result = query.Execute();
AssertMessages(messages, new IMessage[] { expectedResultMessage });
messages.Clear();
for (var stimulusIndex = 0; stimulusIndex < stimuli.Length; ++stimulusIndex)
{
var stimulus = stimuli[stimulusIndex];
stimulus.ActUpon(result);
AssertMessages(messages, stimulus.expectedMessagesAfter);
messages.Clear();
}
if (result.HasNext())
{
Assert.Fail("Unexpected item: " + ((Item)result.Next
()));
}
AssertMessages(messages, new IMessage[] {});
}
private void AssertQueryIterationProtocol(IQuery query, MsgD expectedResultMessage
, PrefetchConfigurationTestCase.Stimulus[] stimuli)
{
IList messages = MessageCollector.ForServerDispatcher(ServerDispatcher());
IObjectSet result = query.Execute();
AssertMessages(messages, new IMessage[] { expectedResultMessage });
messages.Clear();
for (int stimulusIndex = 0; stimulusIndex < stimuli.Length; ++stimulusIndex)
{
PrefetchConfigurationTestCase.Stimulus stimulus = stimuli[stimulusIndex];
stimulus.ActUpon(result);
AssertMessages(messages, stimulus.expectedMessagesAfter);
messages.Clear();
}
if (result.HasNext())
{
Assert.Fail("Unexpected item: " + ((PrefetchConfigurationTestCase.Item)result.Next
()));
}
AssertMessages(messages, new IMessage[] { });
}
/// <exception cref="Db4objects.Db4o.Ext.InvalidPasswordException"></exception>
private void LoginToServer(Socket4Adapter iSocket)
{
UnicodeStringIO stringWriter = new UnicodeStringIO();
int length = stringWriter.Length(_userName) + stringWriter.Length(_password);
MsgD message = Msg.Login.GetWriterForLength(SystemTransaction(), length);
message.WriteString(_userName);
message.WriteString(_password);
message.Write(iSocket);
Msg msg = ReadLoginMessage(iSocket);
ByteArrayBuffer payLoad = msg.PayLoad();
BlockSize(payLoad.ReadInt());
int doEncrypt = payLoad.ReadInt();
if (doEncrypt == 0)
{
_handlers.OldEncryptionOff();
}
if (payLoad.RemainingByteCount() > 0)
{
_serverSideID = payLoad.ReadInt();
}
}
