Create and register indicator catalog entries for automation. Use for Catalog.cs files, CatalogListingBuilder patterns, parameter/result definitions, and PopulateCatalog registration.
src/{category}/{Indicator}/{Indicator}.Catalog.cs
public static partial class Ema
{
/// <summary>
/// EMA Common Base Listing
/// </summary>
internal static readonly IndicatorListing CommonListing =
new CatalogListingBuilder()
.WithName("Exponential Moving Average")
.WithId("EMA")
.WithCategory(Category.MovingAverage)
.AddParameter<int>("lookbackPeriods", "Lookback Period",
description: "Number of periods for the EMA calculation",
isRequired: true, defaultValue: 20, minimum: 2, maximum: 250)
.AddResult("Ema", "EMA", ResultType.Default, isReusable: true)
.Build();
/// <summary>
/// EMA Series Listing
/// </summary>
internal static readonly IndicatorListing SeriesListing =
new CatalogListingBuilder(CommonListing)
.WithStyle(Style.Series)
.WithMethodName("ToEma")
.Build();
/// <summary>
/// EMA Stream Listing
/// </summary>
internal static readonly IndicatorListing StreamListing =
new CatalogListingBuilder(CommonListing)
.WithStyle(Style.Stream)
.WithMethodName("ToEmaHub")
.Build();
/// <summary>
/// EMA Buffer Listing
/// </summary>
internal static readonly IndicatorListing BufferListing =
new CatalogListingBuilder(CommonListing)
.WithStyle(Style.Buffer)
.WithMethodName("ToEmaList")
.Build();
}
| Style | Pattern | Example |
|---|---|---|
| Series | To{Name} | ToEma |
| Stream | To{Name}Hub | ToEmaHub |
| Buffer | To{Name}List | ToEmaList |
.WithMethodName() must be in style-specific listings, NOT in CommonListing.
AddParameter<T>() — int, double, boolAddEnumParameter<T>() — enum typesAddDateParameter() — DateTimeAddSeriesParameter() — IReadOnlyList<T> where T : IReusableminimum and maximum required for all numeric parametersdataName must match property name in Models file exactlyisReusable: true only for the property mapping to IReusable.ValueISeries models: all results must have isReusable: falseisReusable: true per IReusable indicator| Category | Examples |
|---|---|
CandlestickPattern | Doji, Marubozu |
MovingAverage | EMA, SMA, HMA, TEMA, WMA, DEMA |
Oscillator | RSI, Stochastic, MACD, CCI, BOP, CMO, Chop, DPO |
PriceChannel | Bollinger Bands, Keltner, Donchian, VWAP |
PriceCharacteristic | ATR, Beta, Standard Deviation, True Range |
PricePattern | Fractal, Pivot Points |
PriceTransform | Quote Part, ZigZag |
PriceTrend | ADX, Aroon, Alligator, AtrStop, SuperTrend, Vortex |
StopAndReverse | Chandelier, Parabolic SAR, Volatility Stop |
VolumeBased | OBV, Chaikin Money Flow, Chaikin Oscillator |
src/_common/Catalog/Catalog.Listings.cs, PopulateCatalog() — alphabetical order:
_catalog.Add(Ema.SeriesListing);
_catalog.Add(Ema.StreamListing);
_catalog.Add(Ema.BufferListing);
.WithMethodName() in CommonListingisReusable: true for ISeries modelsisReusable: true results per indicatortests/indicators/{folder}/{Indicator}/{Indicator}.Catalog.Tests.cs:
[TestClass]
public class EmaCatalogTests : TestBase
{
[TestMethod]
public void EmaSeriesListing()
{
var listing = Ema.SeriesListing;
listing.Name.Should().Be("Exponential Moving Average");
listing.Style.Should().Be(Style.Series);
listing.MethodName.Should().Be("ToEma");
}
}