#2 -- add params for method

src/main/java/ru/ulstu/services/TimeSeriesService.java

@@ -8,6 +8,8 @@ import ru.ulstu.models.Forecast;
 import ru.ulstu.models.TimeSeries;
 import ru.ulstu.models.TimeSeriesValue;
 import ru.ulstu.models.exceptions.ModelingException;
+import ru.ulstu.tsMethods.exponential.ExponentialMethodParams;
+import ru.ulstu.tsMethods.exponential.ExponentialParamName;
 import ru.ulstu.tsMethods.exponential.NoTrendNoSeason;
 
 import java.time.LocalDateTime;
@@ -31,7 +33,7 @@ public class TimeSeriesService {
     }
 
     public Forecast getForecast(TimeSeries timeSeries, int countPoints) throws ModelingException {
-        NoTrendNoSeason nn = new NoTrendNoSeason(0.8);
+        NoTrendNoSeason nn = new NoTrendNoSeason(ExponentialMethodParams.of(ExponentialParamName.ALPHA, 0.8));
         return nn.getForecast(timeSeries, countPoints);
     }
 

src/main/java/ru/ulstu/tsMethods/Param.java

@@ -1,5 +0,0 @@
-package ru.ulstu.tsMethods;
-
-public enum Param {
-    ALPHA
-}

src/main/java/ru/ulstu/tsMethods/TimeSeriesMethod.java

@@ -24,7 +24,7 @@ public abstract class TimeSeriesMethod {
      * @return модель временного ряда
      * @throws TimeSeriesValidateException
      */
-    public Model getModel(TimeSeries timeSeries) throws TimeSeriesValidateException {
+    public Model getModel(TimeSeries timeSeries) throws ModelingException {
         validateTimeSeries(timeSeries);
         return getModelOfValidTimeSeries(timeSeries);
     }
@@ -36,7 +36,7 @@ public abstract class TimeSeriesMethod {
      * @param timeSeries исходный временной ряд подлежащий моделированию
      * @return
      */
-    protected abstract Model getModelOfValidTimeSeries(TimeSeries timeSeries);
+    protected abstract Model getModelOfValidTimeSeries(TimeSeries timeSeries) throws ModelingException;
 
     /**
      * Выполняет построение прогноза временного ряда. Даты спрогнозированных точек будут сгенерированы по модельным точкам.

src/main/java/ru/ulstu/tsMethods/exponential/ExponentialMethodParams.java

@@ -0,0 +1,26 @@
+package ru.ulstu.tsMethods.exponential;
+
+import com.google.common.collect.ImmutableMap;
+import ru.ulstu.models.exceptions.ModelingException;
+
+import java.util.Map;
+
+public class ExponentialMethodParams {
+    Map<ExponentialParamName, Double> paramsValues;
+
+    public ExponentialMethodParams(Map<ExponentialParamName, Double> paramsValues) {
+        this.paramsValues = paramsValues;
+    }
+
+    public Double getValue(ExponentialParamName paramName) throws ModelingException {
+        if (paramsValues.containsKey(paramName)) {
+            return paramsValues.get(paramName);
+        } else {
+            throw new ModelingException("Неизвестное название параметра для метода экспоненциального сглаживания");
+        }
+    }
+
+    public static ExponentialMethodParams of(ExponentialParamName param1, Double value1) {
+        return new ExponentialMethodParams(ImmutableMap.of(param1, value1));
+    }
+}

src/main/java/ru/ulstu/tsMethods/exponential/ExponentialParamName.java

@@ -0,0 +1,5 @@
+package ru.ulstu.tsMethods.exponential;
+
+public enum ExponentialParamName {
+    ALPHA, BETA, GAMMA
+}

src/main/java/ru/ulstu/tsMethods/exponential/NoTrendNoSeason.java

@@ -3,24 +3,27 @@ package ru.ulstu.tsMethods.exponential;
 import ru.ulstu.models.Forecast;
 import ru.ulstu.models.Model;
 import ru.ulstu.models.TimeSeries;
+import ru.ulstu.models.exceptions.ModelingException;
 import ru.ulstu.tsMethods.TimeSeriesMethod;
 
-public class NoTrendNoSeason extends TimeSeriesMethod {
+import static ru.ulstu.tsMethods.exponential.ExponentialParamName.ALPHA;
-    private double alpha;
 
-    public NoTrendNoSeason(double alpha) {
+public class NoTrendNoSeason extends TimeSeriesMethod {
-        this.alpha = alpha;
+    private ExponentialMethodParams exponentialMethodParams;
+
+    public NoTrendNoSeason(ExponentialMethodParams exponentialMethodParams) {
+        this.exponentialMethodParams = exponentialMethodParams;
     }
 
     @Override
-    protected Model getModelOfValidTimeSeries(TimeSeries timeSeries) {
+    protected Model getModelOfValidTimeSeries(TimeSeries timeSeries) throws ModelingException {
         Model model = new Model(timeSeries);
         model.addValue(timeSeries.getFirstValue());
         //выполняется проход модели по сглаживанию
         for (int t = 1; t < timeSeries.getValues().size(); t++) {
             model.addValue(timeSeries.getValues().get(t),
-                    (1 - alpha) * timeSeries.getNumericValue(t)
+                    (1 - exponentialMethodParams.getValue(ALPHA)) * timeSeries.getNumericValue(t)
-                            + alpha * model.getModelTimeSeries().getValues().get(t - 1).getValue());
+                            + exponentialMethodParams.getValue(ALPHA) * model.getModelTimeSeries().getValues().get(t - 1).getValue());
         }
         return model;
     }