private ICommand FindBefore(XTablePortable table, ICommand command)
{
FindBeforeCommand cmd = (FindBeforeCommand)command;
KeyValuePair <IData, IData>?keyValue = table.FindBefore(cmd.Key);
return(new FindBeforeCommand(cmd.Key, keyValue));
}
private ICommand Backward(XTablePortable table, ICommand command)
{
BackwardCommand cmd = (BackwardCommand)command;
List <KeyValuePair <IData, IData> > list = table.Backward(cmd.FromKey, cmd.FromKey != null, cmd.ToKey, cmd.ToKey != null).Take(cmd.PageCount).ToList();
return(new BackwardCommand(cmd.PageCount, cmd.FromKey, cmd.ToKey, list));
}
private ICommand Replace(XTablePortable table, ICommand command)
{
ReplaceCommand cmd = (ReplaceCommand)command;
table.Replace(cmd.Key, cmd.Record);
return(null);
}
private ICommand InsertOrIgnore(XTablePortable table, ICommand command)
{
InsertOrIgnoreCommand cmd = (InsertOrIgnoreCommand)command;
table.InsertOrIgnore(cmd.Key, cmd.Record);
return(null);
}
private ICommand DeleteRange(XTablePortable table, ICommand command)
{
DeleteRangeCommand cmd = (DeleteRangeCommand)command;
table.Delete(cmd.FromKey, cmd.ToKey);
return(null);
}
private ICommand Delete(XTablePortable table, ICommand command)
{
DeleteCommand cmd = (DeleteCommand)command;
table.Delete(cmd.Key);
return(null);
}
private ICommand GetXIndexDescriptor(XTablePortable table, ICommand command)
{
XTableDescriptorGetCommand cmd = (XTableDescriptorGetCommand)command;
cmd.Descriptor = table.Descriptor;
return(new XTableDescriptorGetCommand(cmd.Descriptor));
}
private ICommand TryGet(XTablePortable table, ICommand command)
{
TryGetCommand cmd = (TryGetCommand)command;
IData record = null;
bool exist = table.TryGet(cmd.Key, out record);
return(new TryGetCommand(cmd.Key, record));
}
private ICommand SetXIndexDescriptor(XTablePortable table, ICommand command)
{
XTableDescriptorSetCommand cmd = (XTableDescriptorSetCommand)command;
Descriptor descriptor = (Descriptor)cmd.Descriptor;
if (descriptor.Tag != null)
{
table.Descriptor.Tag = descriptor.Tag;
}
return(new XTableDescriptorSetCommand(descriptor));
}
private ICommand FindBefore(XTablePortable table, ICommand command)
{
FindBeforeCommand cmd = (FindBeforeCommand)command;
KeyValuePair<IData, IData>? keyValue = table.FindBefore(cmd.Key);
return new FindBeforeCommand(cmd.Key, keyValue);
}
private ICommand TryGet(XTablePortable table, ICommand command)
{
TryGetCommand cmd = (TryGetCommand)command;
IData record = null;
bool exist = table.TryGet(cmd.Key, out record);
return new TryGetCommand(cmd.Key, record);
}
private ICommand Backward(XTablePortable table, ICommand command)
{
BackwardCommand cmd = (BackwardCommand)command;
List<KeyValuePair<IData, IData>> list = table.Backward(cmd.FromKey, cmd.FromKey != null, cmd.ToKey, cmd.ToKey != null).Take(cmd.PageCount).ToList();
return new BackwardCommand(cmd.PageCount, cmd.FromKey, cmd.ToKey, list);
}
private ICommand InsertOrIgnore(XTablePortable table, ICommand command)
{
InsertOrIgnoreCommand cmd = (InsertOrIgnoreCommand)command;
table.InsertOrIgnore(cmd.Key, cmd.Record);
return null;
}
private ICommand Clear(XTablePortable table, ICommand command)
{
table.Clear();
return null;
}
private ICommand Delete(XTablePortable table, ICommand command)
{
DeleteCommand cmd = (DeleteCommand)command;
table.Delete(cmd.Key);
return null;
}
private ICommand DeleteRange(XTablePortable table, ICommand command)
{
DeleteRangeCommand cmd = (DeleteRangeCommand)command;
table.Delete(cmd.FromKey, cmd.ToKey);
return null;
}
private ICommand Replace(XTablePortable table, ICommand command)
{
ReplaceCommand cmd = (ReplaceCommand)command;
table.Replace(cmd.Key, cmd.Record);
return null;
}
private ICommand Clear(XTablePortable table, ICommand command)
{
table.Clear();
return(null);
}
private ICommand SetXIndexDescriptor(XTablePortable table, ICommand command)
{
XTableDescriptorSetCommand cmd = (XTableDescriptorSetCommand)command;
Descriptor descriptor = (Descriptor)cmd.Descriptor;
if (descriptor.Tag != null)
table.Descriptor.Tag = descriptor.Tag;
return new XTableDescriptorSetCommand(descriptor);
}
private ICommand LastRow(XTablePortable table, ICommand command)
{
KeyValuePair<IData, IData> cmd = table.LastRow;
return new LastRowCommand(cmd);
}
private ICommand LastRow(XTablePortable table, ICommand command)
{
KeyValuePair <IData, IData> cmd = table.LastRow;
return(new LastRowCommand(cmd));
}
private ICommand GetXIndexDescriptor(XTablePortable table, ICommand command)
{
XTableDescriptorGetCommand cmd = (XTableDescriptorGetCommand)command;
cmd.Descriptor = table.Descriptor;
return new XTableDescriptorGetCommand(cmd.Descriptor);
}
private ICommand Count(XTablePortable table, ICommand command)
{
long count = table.Count();
return(new CountCommand(count));
}
private ICommand Count(XTablePortable table, ICommand command)
{
long count = table.Count();
return new CountCommand(count);
}
private void PacketExecute(object state)
{
try
{
KeyValuePair <ServerConnection, Packet> order = (KeyValuePair <ServerConnection, Packet>)state;
BinaryReader reader = new BinaryReader(order.Value.Request);
Message msgRequest = Message.Deserialize(reader, (id) => StorageEngine.Find(id));
IDescriptor clientDescription = msgRequest.Description;
CommandCollection resultCommands = new CommandCollection(1);
try
{
var commands = msgRequest.Commands;
if (msgRequest.Description != null) // XTable commands
{
XTablePortable table = (XTablePortable)StorageEngine.OpenXTablePortable(clientDescription.Name, clientDescription.KeyDataType, clientDescription.RecordDataType);
table.Descriptor.Tag = clientDescription.Tag;
for (int i = 0; i < commands.Count - 1; i++)
{
ICommand command = msgRequest.Commands[i];
CommandsIIndexExecute[command.Code](table, command);
}
ICommand resultCommand = CommandsIIndexExecute[msgRequest.Commands[commands.Count - 1].Code](table, msgRequest.Commands[commands.Count - 1]);
if (resultCommand != null)
{
resultCommands.Add(resultCommand);
}
table.Flush();
}
else //Storage engine commands
{
ICommand command = msgRequest.Commands[commands.Count - 1];
var resultCommand = CommandsStorageEngineExecute[command.Code](command);
if (resultCommand != null)
{
resultCommands.Add(resultCommand);
}
}
}
catch (Exception e)
{
resultCommands.Add(new ExceptionCommand(e.Message));
}
MemoryStream ms = new MemoryStream();
BinaryWriter writer = new BinaryWriter(ms);
Descriptor responseClientDescription = new Descriptor(-1, "", StructureType.RESERVED, DataType.Boolean, DataType.Boolean, null, null, DateTime.Now, DateTime.Now, DateTime.Now, null);
Message msgResponse = new Message(msgRequest.Description == null ? responseClientDescription : msgRequest.Description, resultCommands);
msgResponse.Serialize(writer);
ms.Position = 0;
order.Value.Response = ms;
order.Key.PendingPackets.Add(order.Value);
}
catch (Exception exc)
{
TcpServer.LogError(exc);
}
}