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// Copyright Vespa.ai. 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;
import java.util.Collections;
/**
* This class represents a now-function in a {@link GroupingExpression}. It evaluates to a long that equals the number
* of seconds since midnight, January 1, 1970 UTC.
*
* @author Simon Thoresen Hult
* @author bratseth
*/
public class NowFunction extends FunctionNode {
/**
* Constructs a new instance of this class.
*/
public NowFunction() {
this(null, null);
}
private NowFunction(String label, Integer level) {
super("now", label, level, Collections.emptyList());
}
@Override
public NowFunction copy() {
return new NowFunction(getLabel(), getLevelOrNull());
}
}
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