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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 {@link String} bucket in a {@link PredefinedFunction}.
*
* @author Simon Thoresen Hult
*/
public class StringBucket extends BucketValue {
/**
* Get the next distinct value.
*
* @param value the base value
* @return the next value
*/
public static StringValue nextValue(StringValue value) {
return new StringValue(value.getValue() + " ");
}
/** Constructs a new bucket for a single unique string */
public StringBucket(String value) {
this(new StringValue(value));
}
/** Constructs a new bucket for a single unique string */
public StringBucket(StringValue value) {
this(value, nextValue(value));
}
/**
* Constructs a new instance of this class.
*
* @param from the from-value to assign to this
* @param to the to-value to assign to this
*/
public StringBucket(String from, String to) {
super(null, null, new StringValue(from), new StringValue(to));
}
/**
* Constructs a new instance of this class.
*
* @param from the from-value to assign to this
* @param to the to-value to assign to this
*/
public StringBucket(ConstantValue<?> from, ConstantValue<?> to) {
super(null, null, from, to);
}
private StringBucket(String label, Integer level, ConstantValue<?> from, ConstantValue<?> to) {
super(label, level, from, to);
}
@Override
public StringBucket copy() {
return new StringBucket(getLabel(), getLevelOrNull(), getFrom().copy(), getTo().copy());
}
}
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