1 files changed, 69 insertions, 0 deletions
diff --git a/container-search/src/main/java/com/yahoo/search/grouping/request/MathFunctions.java b/container-search/src/main/java/com/yahoo/search/grouping/request/MathFunctions.java
new file mode 100644
index 00000000000..5fe5a971be9
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+++ b/container-search/src/main/java/com/yahoo/search/grouping/request/MathFunctions.java
@@ -0,0 +1,69 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.search.grouping.request;
+
+/**
+ * @author <a href="mailto:balder@yahoo-inc.com">Henning Baldersheim</a>
+ */
+public abstract class MathFunctions {
+    /**
+     * Defines the different types of math functions that are available.
+     */
+    public enum Function {
+        EXP,     //  0
+        POW,     //  1
+        LOG,     //  2
+        LOG1P,   //  3
+        LOG10,   //  4
+        SIN,     //  5
+        ASIN,    //  6
+        COS,     //  7
+        ACOS,    //  8
+        TAN,     //  9
+        ATAN,    // 10
+        SQRT,    // 11
+        SINH,    // 12
+        ASINH,   // 13
+        COSH,    // 14
+        ACOSH,   // 15
+        TANH,    // 16
+        ATANH,   // 17
+        CBRT,    // 18
+        HYPOT,   // 19
+        FLOOR;   // 20
+
+        static Function create(int tid) {
+            for(Function p : values()) {
+                if (tid == p.ordinal()) {
+                    return p;
+                }
+            }
+            return null;
+        }
+    }
+    public static FunctionNode newInstance(Function type, GroupingExpression x, GroupingExpression y) {
+        switch (type) {
+            case EXP: return new MathExpFunction(x);
+            case POW: return new MathPowFunction(x, y);
+            case LOG: return new MathLogFunction(x);
+            case LOG1P: return new MathLog1pFunction(x);
+            case LOG10: return new MathLog10Function(x);
+            case SIN: return new MathSinFunction(x);
+            case ASIN: return new MathASinFunction(x);
+            case COS: return new MathCosFunction(x);
+            case ACOS: return new MathACosFunction(x);
+            case TAN: return new MathTanFunction(x);
+            case ATAN: return new MathATanFunction(x);
+            case SQRT: return new MathSqrtFunction(x);
+            case SINH: return new MathSinHFunction(x);
+            case ASINH: return new MathASinHFunction(x);
+            case COSH: return new MathCosHFunction(x);
+            case ACOSH: return new MathACosHFunction(x);
+            case TANH: return new MathTanHFunction(x);
+            case ATANH: return new MathATanHFunction(x);
+            case CBRT: return new MathCbrtFunction(x);
+            case HYPOT: return new MathHypotFunction(x, y);
+            case FLOOR: return new MathFloorFunction(x);
+        }
+        return null;
+    }
+}