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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;
/**
* This class represents a constant {@link String} value in a {@link GroupingExpression}.
*
* @author Simon Thoresen Hult
* @author bratseth
*/
public class StringValue extends ConstantValue<String> {
/**
* Constructs a new instance of this class.
*
* @param value The immutable value to assign to this.
*/
public StringValue(String value) {
super(null, null, value);
}
private StringValue(String label, Integer level, String value) {
super(label, level, value);
}
@Override
public StringValue copy() {
return new StringValue(getLabel(), getLevelOrNull(), getValue());
}
}
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