blob: 1afac32d4882e8e72030e6992d9e4fd78cbf1a27 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
// 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 document attribute value in a {@link GroupingExpression}. It evaluates to the value of the
* named attribute in the input {@link com.yahoo.search.result.Hit}.
*
* @author Simon Thoresen Hult
* @author bratseth
*/
public class AttributeValue extends DocumentValue {
private final String name;
/**
* Constructs a new instance of this class.
*
* @param attributeName the attribute name to assign to this.
*/
public AttributeValue(String attributeName) {
this(null, null, attributeName);
}
private AttributeValue(String label, Integer level, String attributeName) {
super(attributeName, label, level);
this.name = attributeName;
}
@Override
public AttributeValue copy() {
return new AttributeValue(getLabel(), getLevelOrNull(), getAttributeName());
}
/**
* Returns the name of the attribute to retrieve from the input hit.
*
* @return the attribute name.
*/
public String getAttributeName() {
return name;
}
}
|