private string Formula_EMA(SchemaInstrument formula, LocalFormula localFormula, List <int> selectedIndex, List <RecordInstrument> values)
{
var retval = string.Empty;
var closing = GetDouble(selectedIndex.Count - 1, localFormula, selectedIndex, values);
var previous = GetValueInstrument(selectedIndex.Count - 2, selectedIndex, values);
var previousEma = Double.Parse(previous.Values[localFormula.Items[0].FieldName]);
if (previousEma == 0)
{
var sum = 0d;
for (var i = 1; i < selectedIndex.Count; i++)
{
sum += GetDouble(i, localFormula, selectedIndex, values);
}
var avg = (sum / (selectedIndex.Count - 1));
retval = (avg == 0 ? null : avg.ToString());
}
else
{
var multiplier = (2d / (selectedIndex.Count + 1));
var ema = closing * multiplier + previousEma * (1 - multiplier);
retval = (ema == 0 ? null : ema.ToString());
}
return(retval);
}
public void TransformData(SchemaInstrument formula, List <SchemaInstrument> instruments, List <RecordInstrument> values)
{
//if (!string.IsNullOrEmpty(formula.Transform))
//{
var localFormula = GetUnit(formula);
var selected = GetSelected(values, localFormula);
if (selected.Count > 0)
{
var value = values[selected[0]].Values[formula.Key];
foreach (var transform in localFormula.Transform)
{
switch (transform.Key.ToLower())
{
case "normalise":
if (!string.IsNullOrEmpty(value))
{
value = String.Format("{0:0.000000}", Math.Round((Convert.ToDouble(value) - Convert.ToDouble(transform.Value[0])) / (Convert.ToDouble(transform.Value[1]) - Convert.ToDouble(transform.Value[0])), 6));
}
break;
case "categorise":
var categories = new Dictionary <string, string>();
for (var i = 1; i < transform.Value.Count; i++)
{
var splt = transform.Value[i].Split('=');
categories.Add(splt[0], splt[1]);
}
if (categories.ContainsKey(value))
{
value = categories[value];
}
break;
default:
break;
}
var transformKey = $"{formula.Key}_t";
values[selected[0]].Values[transformKey] = value;
}
}
//}
}
public WatchFile(string watchFileUri, JObject parseObject)
{
try
{
WatchFileUri = watchFileUri;
Schemas = new List <Schema>();
Alias = new Dictionary <string, string>();
MergeFieldList = new List <string>();
MergeCaptureList = new List <string>();
DistinctFieldList = new List <string>();
DistinctCaptureList = new List <string>();
ChartFieldList = new List <string>();
ChartCaptureList = new List <string>();
WatchFileId = parseObject["watchfileid"].ToString();
WatchName = parseObject["watchname"].ToString();
Currency = parseObject["currency"].ToString().ToUpper();
var assembly = Assembly.GetExecutingAssembly();
if (parseObject.ContainsKey("alias"))
{
foreach (JObject alias in parseObject["alias"])
{
if (!IsValid(alias, "alias") || !IsValid(alias, "name"))
{
throw new Exception("Alias or Name missing from watch file settings");
}
Alias.Add(alias["alias"].ToString(), alias["name"].ToString());
}
}
foreach (var alias in Alias.ToArray())
{
Alias[alias.Key] = Substitute(alias.Value);
}
foreach (JObject schema in parseObject["schemas"])
{
Type codeType;
var watchSchema = new Schema();
if (!schema.ContainsKey("codelibrary"))
{
codeType = typeof(DefaultCodeLibrary);
}
else
{
codeType = assembly.GetType(schema["codelibrary"].ToString());
}
watchSchema.SchemaId = Substitute(schema["schemaid"].ToString());
watchSchema.SchemaName = Substitute(schema["schemaname"].ToString());
watchSchema.Unit = (SchemaInstrument.enmUnit)Enum.Parse(typeof(SchemaInstrument.enmUnit), schema["unit"].ToString());
watchSchema.UnitValue = double.Parse(schema["unitvalue"].ToString());
watchSchema.IsActive = (schema.ContainsKey("isactive") ? bool.Parse(schema["isactive"].ToString()) : false);
watchSchema.SchemaInstruments = new List <SchemaInstrument>();
watchSchema.CodeLibrary = (ICodeLibrary)Activator.CreateInstance(codeType);
M(enmMessageType.Debug, String.Format("WatchList.cstor: CodeLibrary [{0}] loaded for {1}", codeType, watchSchema.SchemaId));
watchSchema.Settings = new Dictionary <string, string>();
if (schema.ContainsKey("settings"))
{
foreach (JObject setting in schema["settings"])
{
if (!IsValid(setting, "key") || !IsValid(setting, "value"))
{
throw new Exception("Key or Value missing from watch file settings");
}
watchSchema.Settings.Add(setting["key"].ToString(), Substitute(setting["value"].ToString()));
}
}
// TODO NEED TO VALIDATE SCHEMA -->
// TODO NO RANGES with MINUS FIGURE ALLOWED
// TODO Should only be one ISPREDICT = TRUE setting
// TODO There must be at least one predict key
// TODO Alias must be 3 characters or more
// TODO Some methods do not allow minus values, see attributes
// TODO Some methods do not allow ranges, see attributes
// TODO If a field in the "value" element refers to a field that has not been collected then it is in the wrong order to capture or calculate
// TODO Check two instruments are not writing to same field
// TODO Key is not allowed with _ at the end, this is used to indicate a transformed field
// TODO Predict key must be the first column, now called isnewrecord
// TODO All formula items must reference rows <=0 i.e. minus figures or zero
// TODO Range values must be 2 items or more
foreach (JObject instrument in schema["instruments"])
{
var isActive = (instrument.ContainsKey("isactive") ? bool.Parse(instrument["isactive"].ToString()) : true);
if (isActive)
{
var schemaInstrument = new SchemaInstrument();
schemaInstrument.IsNewRecordEvent = (instrument.ContainsKey("isnewrecord") ? bool.Parse(instrument["isnewrecord"].ToString()) : false);
schemaInstrument.IsColumn = (instrument.ContainsKey("iscolumn") ? bool.Parse(instrument["iscolumn"].ToString()) : true);
schemaInstrument.IsSignal = (instrument.ContainsKey("issignal") ? bool.Parse(instrument["issignal"].ToString()) : false);
schemaInstrument.CacheKey = $"{watchSchema.SchemaId}_{instrument["key"]}";
schemaInstrument.Key = instrument["key"].ToString();
schemaInstrument.Value = Substitute(instrument["value"].ToString());
schemaInstrument.Name = Substitute(instrument["name"].ToString());
schemaInstrument.Transform = (instrument.ContainsKey("transform") ? Substitute(instrument["transform"].ToString()) : null);
schemaInstrument.Type = (instrument.ContainsKey("type") ? (SchemaInstrument.enmType)Enum.Parse(typeof(SchemaInstrument.enmType), instrument["type"].ToString()) : enmType.formula);
schemaInstrument.DataType = (instrument.ContainsKey("datatype") ? (SchemaInstrument.enmDataType)Enum.Parse(typeof(SchemaInstrument.enmDataType), instrument["datatype"].ToString()) : enmDataType.@double);
//schemaInstrument.Unit = (schemaInstrument.Type == enmType.capture ? enmUnit.none : unit); // (instrument.ContainsKey("unit") ? (SchemaInstrument.enmUnit)Enum.Parse(typeof(SchemaInstrument.enmUnit), instrument["unit"].ToString()) : (schemaInstrument.Type == enmType.capture ? enmUnit.none : SchemaInstrument.enmUnit.ticks));
//schemaInstrument.UnitValue = (schemaInstrument.Type == enmType.capture ? 0 : unitValue);
var isFuture = false;
if (schemaInstrument.Type == enmType.formula)
{
var splt = schemaInstrument.Value.Split(";")[0].Split(",");
isFuture = (Convert.ToDouble(splt[1]) < 0);
}
schemaInstrument.IsFuture = isFuture;
schemaInstrument.Settings = new Dictionary <string, string>();
if (instrument.ContainsKey("settings"))
{
foreach (JObject setting in instrument["settings"])
{
schemaInstrument.Settings.Add(setting["key"].ToString(), Substitute(setting["value"].ToString()));
}
}
if (schemaInstrument.Type == SchemaInstrument.enmType.capture)
{
if (schemaInstrument.Name.EndsWith("TICK"))
{
if (!DistinctCaptureList.Exists(x => x.Equals(schemaInstrument.Name)))
{
DistinctCaptureList.Add(schemaInstrument.Name);
}
if (!DistinctFieldList.Exists(x => x.Equals(schemaInstrument.Value)))
{
DistinctFieldList.Add(schemaInstrument.Value);
}
}
else if (schemaInstrument.Name.StartsWith("CHART"))
{
if (!ChartCaptureList.Exists(x => x.Equals(schemaInstrument.Name)))
{
ChartCaptureList.Add(schemaInstrument.Name);
}
if (!ChartFieldList.Exists(x => x.Equals(schemaInstrument.Value)))
{
ChartFieldList.Add(schemaInstrument.Value);
}
}
else
{
if (!MergeCaptureList.Exists(x => x.Equals(schemaInstrument.Name)))
{
MergeCaptureList.Add(schemaInstrument.Name);
}
if (!MergeFieldList.Exists(x => x.Equals(schemaInstrument.Value)))
{
MergeFieldList.Add(schemaInstrument.Value);
}
}
}
if (!string.IsNullOrEmpty(schemaInstrument.Transform))
{
var transform = schemaInstrument.Transform.Split(',');
var foundDataType = Enum.IsDefined(typeof(enmDataType), transform[transform.Length - 1]);
var dataType = (foundDataType ? (enmDataType)Enum.Parse(typeof(enmDataType), transform[transform.Length - 1]) : schemaInstrument.DataType);
SchemaInstrument transformInstrument = new SchemaInstrument()
{
IsColumn = schemaInstrument.IsColumn,
DataType = dataType,
Key = $"{schemaInstrument.Key}_t",
IsSignal = schemaInstrument.IsSignal,
Settings = schemaInstrument.Settings,
Type = SchemaInstrument.enmType.transform
};
schemaInstrument.IsSignal = false;
schemaInstrument.IsColumn = false;
schemaInstrument.Transform = (foundDataType ? string.Join(',', transform, 0, transform.Length - 1) : schemaInstrument.Transform);
watchSchema.SchemaInstruments.Add(transformInstrument);
}
watchSchema.SchemaInstruments.Add(schemaInstrument);
}
}
SchemaInstrument completedInstrument = new SchemaInstrument()
{
IsColumn = false,
DataType = enmDataType.@string,
Key = "completed",
IsSignal = false,
Settings = new Dictionary <string, string>(),
Type = SchemaInstrument.enmType.transform,
Value = new String('X', watchSchema.SchemaInstruments.Where(x => (x.Type == enmType.transform || x.Type == enmType.capture || x.Type == enmType.formula) && !x.IsFuture).Count())
};
watchSchema.SchemaInstruments.Add(completedInstrument);
watchSchema.CodeLibrary.Initialise(watchSchema);
Schemas.Add(watchSchema);
}
Loaded = DateTime.Now;
CheckSum = GetCheckSum(parseObject.ToString());
MergeFieldList.Sort();
MergeCaptureList.Sort();
} catch (Exception ex)
{
M(enmMessageType.Error, $"WatchList.cstor ERROR: Please check your watch file format [{ex.Message}]");
throw ex;
}
}
public void ExecuteMethod(SchemaInstrument formula, List <RecordInstrument> values)
{
var localFormula = GetUnit(formula);
var selectedIndex = GetSelected(values, localFormula);
var isCapture = (selectedIndex.Count >= 1);
var isValid = CheckValid(values, selectedIndex, localFormula);
if (isCapture && isValid)
{
var target = values[selectedIndex[0]];
string newValue = "0";
bool allowNull = true;
switch (System.Enum.Parse(typeof(enmProcess), formula.Name.ToLower()))
{
case enmProcess.signal:
if (selectedIndex.Count == 3)
{
var change = (GetDouble(1, localFormula, selectedIndex, values) - GetDouble(2, localFormula, selectedIndex, values));
var signalRange = (formula.Settings.ContainsKey("range") ? double.Parse(formula.Settings["range"]) : 5);
newValue = (change > signalRange ? $"1": (change < -signalRange ? $"-1" : "0"));
allowNull = false;
}
break;
case enmProcess.getvalue:
if (selectedIndex.Count == 2)
{
newValue = GetString(1, localFormula, selectedIndex, values);
}
break;
case enmProcess.count:
if (selectedIndex.Count >= 1)
{
var count = 0;
for (var i = 1; i <= (selectedIndex.Count - 1); ++i)
{
count++;
}
newValue = count.ToString();
}
break;
case enmProcess.changedvalue:
if (selectedIndex.Count == 3)
{
newValue = (GetDouble(1, localFormula, selectedIndex, values) - GetDouble(2, localFormula, selectedIndex, values)).ToString();
}
break;
case enmProcess.percentage:
if (selectedIndex.Count == 3)
{
var v1 = GetDouble(1, localFormula, selectedIndex, values);
var v2 = GetDouble(2, localFormula, selectedIndex, values);
var difference = (v1 - v2);
var percentage = difference / ((v1 + v2) / 2) * 100;
newValue = String.Format("{0:0.000}", percentage);
}
break;
case enmProcess.roc:
if (selectedIndex.Count == 3)
{
var v1 = GetDouble(1, localFormula, selectedIndex, values);
var v2 = GetDouble(2, localFormula, selectedIndex, values);
var roc = ((v1 / v2) - 1) * 100;
newValue = String.Format("{0:0.000}", roc);
}
break;
case enmProcess.changedinterval:
if (selectedIndex.Count == 3)
{
newValue = (GetValueInstrument(1, selectedIndex, values).Time - GetValueInstrument(2, selectedIndex, values).Time).ToString();
}
break;
case enmProcess.average:
if (selectedIndex.Count >= 3)
{
var sum = 0d;
for (var i = 1; i < selectedIndex.Count; i++)
{
sum += GetDouble(i, localFormula, selectedIndex, values);
}
var average = (sum / (selectedIndex.Count - 1));
newValue = String.Format("{0:0.00}", average);
}
break;
case enmProcess.ema:
if (selectedIndex.Count >= 3)
{
newValue = String.Format("{0:0.00}", Formula_EMA(formula, localFormula, selectedIndex, values));
}
break;
case enmProcess.macd:
if (selectedIndex.Count == 3)
{
var v1 = GetDouble(1, localFormula, selectedIndex, values);
var v2 = GetDouble(2, localFormula, selectedIndex, values);
newValue = (Convert.ToDouble(v1) - Convert.ToDouble(v2)).ToString();
}
break;
case enmProcess.rsi:
if (selectedIndex.Count >= 3)
{
var gain = 0d;
var loss = 0d;
var times = string.Empty;
for (var i = 2; i < selectedIndex.Count; i++)
{
var v1 = GetDouble(i, localFormula, selectedIndex, values);
var v2 = GetDouble(i - 1, localFormula, selectedIndex, values);
var diff = v2 - v1;
if (diff <= 0)
{
loss += Math.Abs(diff);
}
else
{
gain += diff;
}
times += "X";
}
var rsi = (100 - (100 / (1 + (gain / (selectedIndex.Count - 2)) / (loss / (selectedIndex.Count - 2)))));
newValue = String.Format("{0:0.00}", rsi);
}
break;
case enmProcess.standarddeviation:
if (selectedIndex.Count >= 3)
{
var sum = 0d;
for (var i = 1; i < selectedIndex.Count; i++)
{
sum += GetDouble(i, localFormula, selectedIndex, values);
}
var average = (sum / (selectedIndex.Count - 1));
sum = 0d;
for (var i = 1; i < selectedIndex.Count; i++)
{
var val = GetDouble(i, localFormula, selectedIndex, values) - average;
sum += (val * val);
}
average = (sum / (selectedIndex.Count - 1));
var stdDev = (average * average);
newValue = String.Format("{0:0.00}", average);
}
break;
case enmProcess.stochasticoscillator:
if (selectedIndex.Count >= 3)
{
var max = 0d;
var min = Double.MaxValue;
for (var i = 1; i < selectedIndex.Count; i++)
{
var val = GetDouble(i, localFormula, selectedIndex, values);
max = Math.Max(val, max);
min = Math.Min(val, min);
}
var latest = GetDouble(selectedIndex.Count - 1, localFormula, selectedIndex, values);
var stoch = ((latest - min) / (max - min));
newValue = String.Format("{0:0.00}", stoch);
}
break;
default:
break;
}
newValue = (newValue == "0" && allowNull ? null : newValue);
target.Values[localFormula.Items[0].FieldName] = newValue;
}
}
private LocalFormula GetUnit(SchemaInstrument formula)
{
var retval = new LocalFormula();
if (CachedFormula.ContainsKey(formula.CacheKey))
{
retval = CachedFormula[formula.CacheKey];
}
else
{
retval.Key = formula.Key;
retval.Items = new List <LocalFormula.ItemInfo>();
retval.Value = formula.Value;
retval.Unit = formula.Unit;
retval.Type = formula.Type;
retval.DataType = formula.DataType;
int min = int.MaxValue;
int max = int.MinValue;
if (formula.Transform != null)
{
var transforms = formula.Transform.Split(';');
for (var i = 0; i < transforms.Length; i++)
{
retval.Transform = new Dictionary <string, List <string> >();
var items = transforms[i].Split(',');
var args = new string[items.Length - 1];
Array.Copy(items, 1, args, 0, args.Length);
retval.Transform.Add(items[0], args.ToList <string>());
}
}
var fields = retval.Value.Split(';');
if (formula.Type == enmType.formula)
{
for (var i = 0; i < fields.Length; i++)
{
var item = fields[i].Split(',');
if (item.Length == 2)
{
var fieldName = item[0];
var selectedRows = item[1];
retval.ValueType = (selectedRows.Contains('>') ? enmValueType.range : (selectedRows.Contains('~') ? enmValueType.scale : enmValueType.single));
if (retval.ValueType == enmValueType.single)
{
var y = int.Parse(selectedRows);
min = Math.Min(min, y);
max = Math.Max(max, y);
retval.Items.Add(new LocalFormula.ItemInfo(fieldName, y));
}
else if (retval.ValueType == enmValueType.range) // && retval.Unit == enmUnit.ticks)
{
var range = selectedRows.Split(">");
var a = int.Parse(range[0]);
var b = int.Parse(range[1]);
if (a > b)
{
(a, b) = (b, a);
}
for (var x = a; x <= b; x++)
{
min = Math.Min(min, x);
max = Math.Max(max, x);
retval.Items.Add(new LocalFormula.ItemInfo(fieldName, x));
}
}
//else if (retval.ValueType == enmValueType.range && retval.Unit == enmUnit.seconds)
//{
// var range = selectedRows.Split(">");
// var a = int.Parse(range[0]);
// var b = int.Parse(range[1]);
// retval.Items.Add(new LocalFormula.ItemInfo(fieldName, a));
// retval.Items.Add(new LocalFormula.ItemInfo(fieldName, b));
//}
else
{
var range = selectedRows.Split("~");
foreach (var x in range)
{
var y = int.Parse(x);
min = Math.Min(min, y);
max = Math.Max(max, y);
retval.Items.Add(new LocalFormula.ItemInfo(fieldName, y));
}
}
}
else
{
throw new Exception("Formula item in value element must have <field>,<position> combination");
}
}
retval.Range = max - min + 1;
retval.Min = min;
retval.Max = max;
}
CachedFormula.Add(formula.CacheKey, retval);
}
return(retval);
}