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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 value in a {@link GroupingExpression}. Because it does not operate on any input,
* this expression type can be used at any input level (see {@link GroupingExpression#resolveLevel(int)}). All supported
* data types are represented as subclasses of this.
*
* @author Simon Thoresen Hult
* @author bratseth
*/
@SuppressWarnings("rawtypes")
public abstract class ConstantValue<T extends Comparable> extends GroupingExpression {
private final T value;
protected ConstantValue(String label, Integer level, T value) {
super(asImage(value), label, level);
this.value = value;
}
@Override
public abstract ConstantValue copy();
/** Returns the constant value of this */
public T getValue() {
return value;
}
}
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