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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.grouping.request;
/**
* This class represents a document relevance score in a {@link GroupingExpression}. It evaluates to the relevance of
* the input {@link com.yahoo.search.result.Hit}.
*
* @author Simon Thoresen Hult
* @author bratseth
*/
public class RelevanceValue extends DocumentValue {
/**
* Constructs a new instance of this class.
*/
public RelevanceValue() {
this(null, null);
}
private RelevanceValue(String label, Integer level) {
super("relevance()", label, level);
}
@Override
public RelevanceValue copy() {
return new RelevanceValue(getLabel(), getLevelOrNull());
}
}
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