/// <summary>
/// Creates a Message from a FIX string
/// </summary>
/// <param name="msgstr"></param>
/// <param name="validate"></param>
/// <param name="sessionDD"></param>
/// <param name="appDD"></param>
/// <param name="msgFactory">If null, any groups will be constructed as generic Group objects</param>
public void FromString(string msgstr, bool validate,
DataDictionary.DataDictionary sessionDD, DataDictionary.DataDictionary appDD, IMessageFactory msgFactory)
{
Clear();
string msgType = "";
bool expectingHeader = true;
bool expectingBody = true;
int count = 0;
int pos = 0;
DataDictionary.IFieldMapSpec msgMap = null;
if (FixMessageDescriptorEnabled)
{
_descriptor = new FixMessageDescriptor();
if (appDD != null)
_descriptor.FixVersion = appDD.Version;
}
while (pos < msgstr.Length)
{
StringField f = ExtractField(msgstr, ref pos, sessionDD, appDD);
if (validate && (count < 3) && (Header.HEADER_FIELD_ORDER[count++] != f.Tag))
throw new InvalidMessage("Header fields out of order");
if (IsHeaderField(f.Tag, sessionDD))
{
if (!expectingHeader)
{
if (0 == field_)
field_ = f.Tag;
validStructure_ = false;
}
if (Tags.MsgType.Equals(f.Tag))
{
msgType = string.Copy(f.Obj);
if (appDD != null)
{
msgMap = appDD.GetMapForMessage(msgType);
if (FixMessageDescriptorEnabled)
{
QuickFix.DataDictionary.DDMap map = null;
if (appDD != null && appDD.Messages.TryGetValue(f.Obj, out map))
{
_descriptor.MessageType = map.MessageName;
}
}
}
}
if (!this.Header.SetField(f, false))
this.Header.RepeatedTags.Add(f);
if ((null != sessionDD) && sessionDD.Header.IsGroup(f.Tag))
{
if (FixMessageDescriptorEnabled)
{
_currentGroupField = new GroupFixFieldInfo();
_currentGroupField.Tag = f.Tag;
DataDictionary.DDField field = null;
if (sessionDD != null && sessionDD.FieldsByTag.TryGetValue(f.Tag, out field))
{
_currentGroupField.Name = field.Name;
}
_currentGroupField.Value = f.getValue();
_currentGroupField.EnumValue = GetEnumValueFromField(f, field);
_descriptor.Fields.Add(_currentGroupField);
}
pos = SetGroup(f, msgstr, pos, this.Header, sessionDD.Header.GetGroupSpec(f.Tag), sessionDD, appDD, msgFactory);
}
else
{
if (FixMessageDescriptorEnabled)
{
AddFixFieldInfo(f, sessionDD);
}
}
}
else if (IsTrailerField(f.Tag, sessionDD))
{
expectingHeader = false;
expectingBody = false;
if (!this.Trailer.SetField(f, false))
this.Trailer.RepeatedTags.Add(f);
if ((null != sessionDD) && sessionDD.Trailer.IsGroup(f.Tag))
{
if (FixMessageDescriptorEnabled)
{
_currentGroupField = new GroupFixFieldInfo();
_currentGroupField.Tag = f.Tag;
DataDictionary.DDField field = null;
if (sessionDD.FieldsByTag.TryGetValue(f.Tag, out field))
{
_currentGroupField.Name = field.Name;
}
_currentGroupField.Value = f.getValue();
_currentGroupField.EnumValue = GetEnumValueFromField(f, field);
_descriptor.Fields.Add(_currentGroupField);
}
pos = SetGroup(f, msgstr, pos, this.Trailer, sessionDD.Trailer.GetGroup(f.Tag), sessionDD, appDD, msgFactory);
}
else
{
if (FixMessageDescriptorEnabled)
{
AddFixFieldInfo(f, sessionDD);
}
}
}
else
{
if (!expectingBody)
{
if (0 == field_)
field_ = f.Tag;
validStructure_ = false;
}
expectingHeader = false;
if (!SetField(f, false))
{
this.RepeatedTags.Add(f);
}
if ((null != msgMap) && (msgMap.IsGroup(f.Tag)))
{
if (FixMessageDescriptorEnabled)
{
_currentGroupField = new GroupFixFieldInfo();
_currentGroupField.Tag = f.Tag;
DataDictionary.DDField field = null;
if (sessionDD != null && sessionDD.FieldsByTag.TryGetValue(f.Tag, out field))
{
_currentGroupField.Name = field.Name;
}
_currentGroupField.Value = f.getValue();
_currentGroupField.EnumValue = GetEnumValueFromField(f, field);
_descriptor.Fields.Add(_currentGroupField);
}
pos = SetGroup(f, msgstr, pos, this, msgMap.GetGroupSpec(f.Tag), sessionDD, appDD, msgFactory);
}
else
{
if (FixMessageDescriptorEnabled)
{
AddFixFieldInfo(f, appDD);
}
}
}
}
if (validate)
{
Validate();
}
}
/// <summary>
/// Constructs a group and stores it in this Message object
/// </summary>
/// <param name="grpNoFld"></param>
/// <param name="msgstr"></param>
/// <param name="pos"></param>
/// <param name="fieldMap"></param>
/// <param name="dd"></param>
/// <param name="sessionDataDictionary"></param>
/// <param name="appDD"></param>
/// <param name="msgFactory">if this is null, then this method will use the generic Group class constructor</param>
/// <returns></returns>
protected int SetGroup(StringField grpNoFld, string msgstr, int pos, FieldMap fieldMap, DataDictionary.IGroupSpec dd, DataDictionary.DataDictionary sessionDataDictionary, DataDictionary.DataDictionary appDD, IMessageFactory msgFactory)
{
int delim = dd.Delim;
int grpPos = pos;
Group grp = null;
while (pos < msgstr.Length)
{
grpPos = pos;
StringField f = ExtractField(msgstr, ref pos, sessionDataDictionary, appDD);
if (f.Tag == delim)
{
if (grp != null)
{
fieldMap.AddGroup(grp, false);
}
if (msgFactory != null)
grp = msgFactory.Create(Message.ExtractBeginString(msgstr), Message.GetMsgType(msgstr), grpNoFld.Tag);
//If above failed, just use a generic Group.
if (grp == null)
grp = new Group(grpNoFld.Tag, delim);
}
else if (!dd.IsField(f.Tag))
{
if (grp != null)
{
fieldMap.AddGroup(grp, false);
}
return grpPos;
}
grp.SetField(f);
if (dd.IsGroup(f.Tag))
{
if (FixMessageDescriptorEnabled)
{
var oldCurrField = _currentGroupField;
_currentGroupField = new GroupFixFieldInfo();
_currentGroupField.Tag = f.Tag;
DataDictionary.DDField field = null;
if (appDD != null && appDD.FieldsByTag.TryGetValue(f.Tag, out field))
{
_currentGroupField.Name = field.Name;
}
else if (sessionDataDictionary != null && sessionDataDictionary.FieldsByTag.TryGetValue(f.Tag, out field))
{
_currentGroupField.Name = field.Name;
}
_currentGroupField.Value = f.getValue();
_currentGroupField.EnumValue = GetEnumValueFromField(f, field);
oldCurrField.Fields.Add(_currentGroupField);
}
pos = SetGroup(f, msgstr, pos, grp, dd.GetGroupSpec(f.Tag), sessionDataDictionary, appDD, msgFactory);
}
else
{
if (FixMessageDescriptorEnabled)
{
FixFieldInfo fi = new FixFieldInfo();
fi.Tag = f.Tag;
DataDictionary.DDField field = null;
if (appDD != null && appDD.FieldsByTag.TryGetValue(f.Tag, out field))
{
_currentGroupField.Name = field.Name;
}
else if (sessionDataDictionary != null && sessionDataDictionary.FieldsByTag.TryGetValue(f.Tag, out field))
{
_currentGroupField.Name = field.Name;
}
fi.Value = f.getValue();
fi.EnumValue = GetEnumValueFromField(f, field);
_currentGroupField.Fields.Add(fi);
}
}
}
return grpPos;
}
public override void Clear()
{
_descriptor = null;
_currentGroupField = null;
field_ = 0;
this.Header.Clear();
base.Clear();
this.Trailer.Clear();
}
