1 files changed, 33 insertions, 0 deletions
diff --git a/container-search/src/main/java/com/yahoo/search/grouping/request/Md5Function.java b/container-search/src/main/java/com/yahoo/search/grouping/request/Md5Function.java
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+++ b/container-search/src/main/java/com/yahoo/search/grouping/request/Md5Function.java
@@ -0,0 +1,33 @@
+// 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 md5-function in a {@link GroupingExpression}. It evaluates to a long that equals the md5 of
+ * the result of the argument.
+ *
+ * @author <a href="mailto:simon@yahoo-inc.com">Simon Thoresen</a>
+ */
+public class Md5Function extends FunctionNode {
+
+    /**
+     * Constructs a new instance of this class.
+     *
+     * @param exp     The expression to evaluate.
+     * @param numBits The number of bits of the md5 to include.
+     */
+    public Md5Function(GroupingExpression exp, int numBits) {
+        super("md5", Arrays.asList(exp, new LongValue(numBits)));
+    }
+
+    /**
+     * Returns the number of bits of the md5 to include in the evaluated result.
+     *
+     * @return The bit count.
+     */
+    public int getNumBits() {
+        return ((LongValue)getArg(1)).getValue().intValue();
+    }
+}
+