blob: 3e6102f306d8563bf236a83e3d0d4aec5bbaec9e (
plain)
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
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to version 1.0 of the Zend Framework
* license, that is bundled with this package in the file LICENSE, and
* is available through the world-wide-web at the following URL:
* http://www.zend.com/license/framework/1_0.txt. If you did not receive
* a copy of the Zend Framework license and are unable to obtain it
* through the world-wide-web, please send a note to license@zend.com
* so we can mail you a copy immediately.
*
* @package Zend_Search_Lucene
* @subpackage Search
* @copyright Copyright (c) 2005-2006 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://www.zend.com/license/framework/1_0.txt Zend Framework License version 1.0
*/
/** Zend_Search_Lucene_Search_Weight */
require_once 'Zend/Search/Lucene/Search/Weight.php';
/**
* @package Zend_Search_Lucene
* @subpackage Search
* @copyright Copyright (c) 2005-2006 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://www.zend.com/license/framework/1_0.txt Zend Framework License version 1.0
*/
class Zend_Search_Lucene_Search_Weight_Term extends Zend_Search_Lucene_Search_Weight
{
/**
* IndexReader.
*
* @var Zend_Search_Lucene
*/
private $_reader;
/**
* Term
*
* @var Zend_Search_Lucene_Index_Term
*/
private $_term;
/**
* The query that this concerns.
*
* @var Zend_Search_Lucene_Search_Query
*/
private $_query;
/**
* Weight value
*
* @var float
*/
private $_value;
/**
* Score factor
*
* @var float
*/
private $_idf;
/**
* Normalization factor
*
* @var float
*/
private $_queryNorm;
/**
* Query weight
*
* @var float
*/
private $_queryWeight;
/**
* Zend_Search_Lucene_Search_Weight_Term constructor
* reader - index reader
*
* @param Zend_Search_Lucene $reader
*/
public function __construct($term, $query, $reader)
{
$this->_term = $term;
$this->_query = $query;
$this->_reader = $reader;
}
/**
* The weight for this query
*
* @return float
*/
public function getValue()
{
return $this->_value;
}
/**
* The sum of squared weights of contained query clauses.
*
* @return float
*/
public function sumOfSquaredWeights()
{
// compute idf
$this->_idf = $this->_reader->getSimilarity()->idf($this->_term, $this->_reader);
// compute query weight
$this->_queryWeight = $this->_idf * $this->_query->getBoost();
// square it
return $this->_queryWeight * $this->_queryWeight;
}
/**
* Assigns the query normalization factor to this.
*
* @param float $queryNorm
*/
public function normalize($queryNorm)
{
$this->_queryNorm = $queryNorm;
// normalize query weight
$this->_queryWeight *= $queryNorm;
// idf for documents
$this->_value = $this->_queryWeight * $this->_idf;
}
}
|
