private void CheckScales(Meta.Message source)
{
if (source.IsScaleNeeded && this.scales.Empty)
{
Meta.Message message = this.market.Tables.Find(Meta.TableType.Securities);
if (message != null)
{
IntPtr ptr;
string parameters = message.Encode(null, this.scales);
int code = this.module.MTEOpenTable(this.handle, message.Name, parameters, 1, out ptr);
this.CheckResult(code);
try
{
int structure = Marshal.ReadInt32(ptr);
ptr += Marshal.SizeOf(structure);
byte[] destination = new byte[structure];
Marshal.Copy(ptr, destination, 0, structure);
TableParser.Acquire(this, message, parameters, destination).Execute(null);
}
finally
{
this.module.MTECloseTable(this.handle, code);
}
}
}
}
public Parser Load(string table, IDictionary <string, object> param)
{
IntPtr ptr;
Parser parser;
this.CheckClosed();
Meta.Message source = this.market.Tables[table];
if (source == null)
{
throw new ClientException(-17, "Table " + table + " is not listed");
}
this.CheckScales(source);
string parameters = source.Encode(param, this.scales);
int code = this.module.MTEOpenTable(this.handle, table, parameters, 1, out ptr);
this.CheckResult(code);
try
{
int structure = Marshal.ReadInt32(ptr);
ptr += Marshal.SizeOf(structure);
byte[] destination = new byte[structure];
Marshal.Copy(ptr, destination, 0, structure);
parser = TableParser.Acquire(this, source, parameters, destination);
}
finally
{
this.module.MTECloseTable(this.handle, code);
}
return(parser);
}
private Parser Open(string table, IDictionary <string, object> param, bool complete, byte[] snapshot, out string marker)
{
this.CheckClosed();
if ((snapshot != null) && (this.module.MTEOpenTableAtSnapshot == null))
{
throw new ClientException(-34, "MTEOpenTableAtSnapshot() not supported");
}
Meta.Message source = this.market.Tables[table];
if (source == null)
{
throw new ClientException(-17, "Table " + table + " is not listed");
}
this.CheckScales(source);
string parameters = source.Encode(param, this.scales);
marker = source.Name + '@' + parameters;
if (this.GetRequest(marker) == null)
{
IntPtr ptr;
int code = (snapshot == null) ? this.module.MTEOpenTable(this.handle, table, parameters, (complete || !source.IsUpdatable) ? 1 : 0, out ptr) : this.module.MTEOpenTableAtSnapshot(this.handle, table, parameters, snapshot, snapshot.Length, out ptr);
this.CheckResult(code);
try
{
int structure = Marshal.ReadInt32(ptr);
ptr += Marshal.SizeOf(structure);
byte[] destination = new byte[structure];
Marshal.Copy(ptr, destination, 0, structure);
return(TableParser.Acquire(this, source, parameters, destination));
}
finally
{
if (source.IsUpdatable)
{
this.CreateRequest(code, source, parameters, marker);
}
else
{
this.module.MTECloseTable(this.handle, code);
}
}
}
return(Parser.Empty);
}
