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// Copyright 2017 Yahoo Holdings. 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 <a href="mailto:simon@yahoo-inc.com">Simon Thoresen</a>
*/
@SuppressWarnings("rawtypes")
public abstract class ConstantValue<T extends Comparable> extends GroupingExpression {
private final T value;
protected ConstantValue(T value) {
super(asImage(value));
this.value = value;
}
/**
* Returns the constant value of this.
*
* @return The value.
*/
public T getValue() {
return value;
}
}
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