1 files changed, 63 insertions, 0 deletions
diff --git a/container-search/src/main/java/com/yahoo/search/grouping/request/UcaFunction.java b/container-search/src/main/java/com/yahoo/search/grouping/request/UcaFunction.java
new file mode 100644
index 00000000000..2e23f41f139
--- /dev/null
+++ b/container-search/src/main/java/com/yahoo/search/grouping/request/UcaFunction.java
@@ -0,0 +1,63 @@
+// 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;
+
+import java.util.Arrays;
+
+/**
+ * This class represents an uca-function in a {@link GroupingExpression}.
+ *
+ * @author <a href="mailto:lulf@yahoo-inc.com">Ulf Lilleengen</a>
+ */
+public class UcaFunction extends FunctionNode {
+
+    private final String locale;
+    private final String strength;
+
+
+    /**
+     * Constructs a new instance of this class.
+     *
+     * @param exp     The expression to evaluate.
+     * @param locale  The locale to used for sorting.
+     */
+    public UcaFunction(GroupingExpression exp, String locale) {
+        super("uca", Arrays.asList(exp, new StringValue(locale)));
+        this.locale = locale;
+        this.strength = "TERTIARY";
+    }
+
+    /**
+     * Constructs a new instance of this class.
+     *
+     * @param exp     The expression to evaluate.
+     * @param locale  The locale to used for sorting.
+     * @param strength The strength level to use.
+     */
+    public UcaFunction(GroupingExpression exp, String locale, String strength) {
+        super("uca", Arrays.asList(exp, new StringValue(locale), new StringValue(strength)));
+        if (!validStrength(strength)) {
+            throw new IllegalArgumentException("Not a valid UCA strength: " + strength);
+        }
+        this.locale = locale;
+        this.strength = strength;
+    }
+
+    private boolean validStrength(String strength) {
+        return (strength.equals("PRIMARY") ||
+                strength.equals("SECONDARY") ||
+                strength.equals("TERTIARY") ||
+                strength.equals("QUATERNARY") ||
+                strength.equals("IDENTICAL"));
+    }
+
+    public String getLocale() {
+        return locale;
+    }
+
+    public String getStrength() {
+        return strength;
+    }
+}
+
+
+