public ValueExtractor(IRuntimeMetricManager manager, string expression, Func <string, IRuntimeMetric> creator = null)
{
if (manager == null)
{
throw new ArgumentNullException();
}
if (string.IsNullOrWhiteSpace(expression))
{
throw new ArgumentNullException(expression);
}
double constantValue;
if (!double.TryParse(expression, out constantValue))
{
_isConstant = false;
_proxy = creator == null ? new RuntimeMetricProxy(manager, expression) : new RuntimeMetricProxy(manager, expression, creator);
_constant = double.NaN;
}
else
{
_proxy = null;
_constant = constantValue;
_isConstant = true;
}
}
public StandardGroupRuntimeMetricManager(IRuntimeMetricManager manager)
{
if (manager == null)
{
throw new ArgumentNullException();
}
_manager = manager;
}
public RuntimeMetricProxy(IRuntimeMetricManager manager, string metricName, Func <string, IRuntimeMetric> metricCreator)
{
if (string.IsNullOrWhiteSpace(metricName) || manager == null || metricCreator == null)
{
throw new ArgumentNullException();
}
_manager = manager;
_metricIndex = manager.RegisterMetric(metricName, metricCreator);
}
public void Observe(IRuntimeMetricManager manager)
{
if (manager == null)
{
throw new ArgumentNullException();
}
var metrics = _rocMetricProxy.GetMetrics();
_sorter.OrderByDescending(metrics);
}
public void Initialize(IRuntimeMetricManager manager)
{
if (manager == null)
{
throw new ArgumentNullException();
}
_leftValueExtractor = new ValueExtractor(manager, _leftExpression, _metricCreator1);
_operator = ComparisonOperatorHelper.Parse(_operatorString);
_rightValueExtractor = new ValueExtractor(manager, _rightExpression, _metricCreator2);
}
public void Initialize(IRuntimeMetricManager manager)
{
if (manager == null)
{
throw new ArgumentNullException();
}
_expression1.Initialize(manager);
if (_expression2 != null)
{
_expression2.Initialize(manager);
}
}
public void Observe(IRuntimeMetricManager manager)
{
if (manager == null)
{
throw new ArgumentNullException();
}
var metrics = manager.GetMetrics(_metricIndex);
foreach (var sorter in _blockToMetricSorterMap.Values)
{
var subMetrics = sorter.TradingObjects.Select(o => metrics[o.Index]).ToArray();
sorter.OrderBy(subMetrics, _comparer);
}
}
public StandardEvaluationContext(
ITradingDataProvider provider,
EquityManager equityManager,
ILogger logger,
TradingSettings settings = null,
StreamWriter dumpDataWriter = null,
StockBlockRelationshipManager relationshipManager = null)
{
if (equityManager == null || provider == null || logger == null)
{
throw new ArgumentNullException();
}
_provider = provider;
_equityManager = equityManager;
_logger = logger;
_settings = settings;
_relationshipManager = relationshipManager;
var metricManager = new StandardRuntimeMetricManager(_provider.GetAllTradingObjects().Length);
var groupMetricManager = new StandardGroupRuntimeMetricManager(metricManager);
// register the group metric manager as observer of metric manager.
metricManager.RegisterAfterUpdatedMetricsObserver(groupMetricManager);
_metricManager = metricManager;
_groupMetricManager = groupMetricManager;
_boardIndexTradingObjects = new Dictionary <string, ITradingObject>();
var boards = new StockBoard[]
{
StockBoard.GrowingBoard,
StockBoard.MainBoard,
StockBoard.SmallMiddleBoard
};
foreach (var board in boards)
{
string boardIndex = StockName.GetBoardIndex(board);
ITradingObject tradingObject = GetTradingObject(boardIndex);
_boardIndexTradingObjects.Add(boardIndex, tradingObject);
}
_dumper = dumpDataWriter == null ? null : new StreamDataDumper(dumpDataWriter, 8, 3, _settings.DumpMetrics, this, _provider);
}
/// <summary>
/// Update all registered group runtime metric according to the value of depended metric value
/// </summary>
/// <param name="manager">the runtime metric manager which manages all metrics depended by the group runtime metrics</param>
private void UpdateMetrics(IRuntimeMetricManager manager)
{
if (manager != _manager)
{
throw new InvalidProgramException();
}
for (int i = 0; i < _metrics.Count; ++i)
{
IGroupRuntimeMetric metric = _metrics[i];
int[] tradingObjectIndices = _tradingObjects[i];
int[] dependedMetricIndices = _dependedMetrics[i];
if (dependedMetricIndices.Length == 0)
{
continue;
}
IRuntimeMetric[][] runtimeMetrics = new IRuntimeMetric[dependedMetricIndices.Length][];
for (int j = 0; j < runtimeMetrics.Length; ++j)
{
IRuntimeMetric[] fullMetrics = manager.GetMetrics(dependedMetricIndices[j]);
IRuntimeMetric[] subMetrics = new IRuntimeMetric[tradingObjectIndices.Length];
for (int k = 0; k < tradingObjectIndices.Length; ++k)
{
subMetrics[k] = fullMetrics[tradingObjectIndices[k]];
}
runtimeMetrics[j] = subMetrics;
}
// update metric
metric.Update(runtimeMetrics);
}
// call observers if any
foreach (var observer in _observers)
{
observer.Observe(this);
}
}
public MovingAverageTrendDetector(IRuntimeMetricManager manager, IEnumerable <int> periods)
{
if (manager == null)
{
throw new ArgumentNullException("manager");
}
if (periods == null)
{
throw new ArgumentNullException("periods");
}
var dedupPeriods = periods.GroupBy(i => i);
periods = dedupPeriods.Select(g => g.Key).ToList();
if (periods.Count() < 1)
{
throw new ArgumentException("Need at least 1 MA periods for trend detection");
}
// for single period that is not 1, we need to add 1 in periods.
var tempPeriods = periods.ToList();
if (periods.Count() == 1 && periods.First() != 1)
{
tempPeriods.Add(1);
}
_periods = tempPeriods.OrderBy(i => i).ToArray();
_movingAverages = _periods
.Select(i => new RuntimeMetricProxy(manager, string.Format("MA[{0}]", i)))
.ToArray();
_trendDetectors = _periods
.Select(i => new RuntimeMetricProxy(manager, string.Format("TD[5](MA[{0}])", i)))
.ToArray();
}
public void Observe(IRuntimeMetricManager manager)
{
UpdateMetrics(manager);
}
