elasticpress / includes / classes / SearchAlgorithm / Version_400.php

Version_400.php in ElasticPress 4.5.1, at includes/classes/SearchAlgorithm/Version_400.php

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1	<?php
2	/**
3	* EP version 4.0.0 search algorithm
4	*
5	* @since 4.3.0
6	* @package elasticpress
7	*/
8
9	namespace ElasticPress\SearchAlgorithm;
10
11	if ( ! defined( 'ABSPATH' ) ) {
12	// @codeCoverageIgnoreStart
13	exit; // Exit if accessed directly.
14	// @codeCoverageIgnoreEnd
15	}
16
17	/**
18	* EP version 4.0.0 search algorithm class.
19	*/
20	class Version_400 extends \ElasticPress\SearchAlgorithm {
21	/**
22	* Search algorithm slug.
23	*
24	* @return string
25	*/
26	public function get_slug() : string {
27	return '4.0';
28	}
29
30	/**
31	* Search algorithm name.
32	*
33	* @return string
34	*/
35	public function get_name() : string {
36	return esc_html__( 'Version 4.0', 'elasticpress' );
37	}
38
39	/**
40	* Search algorithm description.
41	*
42	* @return string
43	*/
44	public function get_description() : string {
45	return esc_html__( 'Search for all search terms in one field first, then prioritize them over search terms matched in different fields.', 'elasticpress' );
46	}
47
48	/**
49	* Return the Elasticsearch `query` clause.
50	*
51	* @param string $indexable_slug Indexable slug
52	* @param string $search_term Search term(s)
53	* @param array $search_fields Search fields
54	* @param array $query_vars Query vars
55	* @return array ES `query`
56	*/
57	protected function get_raw_query( string $indexable_slug, string $search_term, array $search_fields, array $query_vars ) : array {
58	$query = [
59	'bool' => [
60	'should' => [
61	[
62	'multi_match' => [
63	'query' => $search_term,
64	'type' => 'phrase',
65	'fields' => $search_fields,
66	/** This filter is documented in /includes/classes/SearchAlgorithm/Basic.php */
67	'boost' => apply_filters( "ep_{$indexable_slug}_match_phrase_boost", 3, $search_fields, $query_vars ),
68	],
69	],
70	[
71	'multi_match' => [
72	'query' => $search_term,
73	'fields' => $search_fields,
74	'operator' => 'and',
75	/** This filter is documented in /includes/classes/SearchAlgorithm/Basic.php */
76	'boost' => apply_filters( "ep_{$indexable_slug}_match_boost", 1, $search_fields, $query_vars ),
77	/**
78	* Filter fuzziness for match query
79	*
80	* @hook ep_{$indexable_slug}_match_fuzziness
81	* @since 4.3.0
82	* @param {string\|int} $fuzziness Fuzziness
83	* @param {array} $search_fields Search fields
84	* @param {array} $query_vars Query variables
85	* @return {string} New fuzziness
86	*/
87	'fuzziness' => apply_filters( "ep_{$indexable_slug}_match_fuzziness", 'auto', $search_fields, $query_vars ),
88	],
89	],
90	[
91	'multi_match' => [
92	'query' => $search_term,
93	'type' => 'cross_fields',
94	'fields' => $search_fields,
95	/**
96	* Filter boost for match cross_fields query
97	*
98	* @hook ep_{$indexable_slug}_match_cross_fields_boost
99	* @since 4.3.0
100	* @param {int} $boost Boost
101	* @param {array} $search_fields Search fields
102	* @param {array} $query_vars Query variables
103	* @return {int} New boost
104	*/
105	'boost' => apply_filters( "ep_{$indexable_slug}_match_cross_fields_boost", 1, $search_fields, $query_vars ),
106	'analyzer' => 'standard',
107	'tie_breaker' => 0.5,
108	'operator' => 'and',
109	],
110	],
111	],
112	],
113	];
114
115	$query = $this->apply_legacy_filters( $query, $indexable_slug, $search_fields, $query_vars );
116
117	return $query;
118	}
119
120	/**
121	* Apply legacy filters.
122	*
123	* @param array $query ES `query`
124	* @param string $indexable_slug Indexable slug
125	* @param array $search_fields Search term(s)
126	* @param array $query_vars Query vars
127	* @return array ES `query`
128	*/
129	protected function apply_legacy_filters( array $query, string $indexable_slug, array $search_fields, array $query_vars ) : array {
130	if ( 'post' !== $indexable_slug ) {
131	return $query;
132	}
133
134	/** This filter is documented in /includes/classes/SearchAlgorithm/Basic.php */
135	$query['bool']['should'][0]['multi_match']['boost'] = apply_filters_deprecated(
136	'ep_match_phrase_boost',
137	[ $query['bool']['should'][0]['multi_match']['boost'], $search_fields, $query_vars ],
138	'4.3.0',
139	'ep_post_match_phrase_boost'
140	);
141
142	/** This filter is documented in /includes/classes/SearchAlgorithm/Basic.php */
143	$query['bool']['should'][1]['multi_match']['boost'] = apply_filters_deprecated(
144	'ep_match_boost',
145	[ $query['bool']['should'][1]['multi_match']['boost'], $search_fields, $query_vars ],
146	'4.3.0',
147	'ep_post_match_boost'
148	);
149
150	/**
151	* Filter fuzziness for post match query
152	*
153	* This filter exists to keep backwards-compatibility. Newer implementations should use `ep_post_match_fuzziness`.
154	*
155	* @hook ep_match_fuzziness
156	* @since 4.0.0
157	* @param {string\|int} $fuzziness Fuzziness
158	* @param {array} $search_fields Search fields
159	* @param {array} $query_vars Query variables
160	* @return {string} New fuzziness
161	*/
162	$query['bool']['should'][1]['multi_match']['fuzziness'] = apply_filters_deprecated(
163	'ep_match_fuzziness',
164	[ $query['bool']['should'][1]['multi_match']['fuzziness'], $search_fields, $query_vars ],
165	'4.3.0',
166	'ep_post_match_fuzziness'
167	);
168
169	/**
170	* Filter boost for post match cross_fields query
171	*
172	* This filter exists to keep backwards-compatibility. Newer implementations should use `ep_post_match_cross_fields_boost`.
173	*
174	* @hook ep_{$indexable_slug}_match_cross_fields_boost
175	* @since 4.0.0
176	* @param {int} $boost Boost
177	* @param {array} $search_fields Search fields
178	* @param {array} $query_vars Query variables
179	* @return {int} New boost
180	*/
181	$query['bool']['should'][2]['multi_match']['boost'] = apply_filters_deprecated(
182	'ep_match_cross_fields_boost',
183	[ $query['bool']['should'][2]['multi_match']['boost'], $search_fields, $query_vars ],
184	'4.3.0',
185	'ep_post_match_cross_fields_boost'
186	);
187
188	return $query;
189	}
190	}
191