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authorJon Bratseth <bratseth@yahoo-inc.com>2016-06-15 23:09:44 +0200
committerJon Bratseth <bratseth@yahoo-inc.com>2016-06-15 23:09:44 +0200
commit72231250ed81e10d66bfe70701e64fa5fe50f712 (patch)
tree2728bba1131a6f6e5bdf95afec7d7ff9358dac50 /container-search/src/main/java/com/yahoo/search/grouping/request/NegFunction.java
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diff --git a/container-search/src/main/java/com/yahoo/search/grouping/request/NegFunction.java b/container-search/src/main/java/com/yahoo/search/grouping/request/NegFunction.java
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+// 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 a negate-function in a {@link GroupingExpression}. It evaluates to a number that equals the
+ * negative of the results of the argument.
+ *
+ * @author <a href="mailto:simon@yahoo-inc.com">Simon Thoresen</a>
+ */
+public class NegFunction extends FunctionNode {
+
+ /**
+ * Constructs a new instance of this class.
+ *
+ * @param exp The expression to evaluate, must evaluate to a number.
+ */
+ public NegFunction(GroupingExpression exp) {
+ super("neg", Arrays.asList(exp));
+ }
+}
+