elasticpress / includes / classes / SearchAlgorithm.php

SearchAlgorithm.php in ElasticPress 5.0.2, at includes/classes/SearchAlgorithm.php

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1	<?php
2	/**
3	* SearchAlgorithm class.
4	*
5	* All search algorithms extend this class.
6	*
7	* @since 4.3.0
8	* @package elasticpress
9	*/
10
11	namespace ElasticPress;
12
13	if ( ! defined( 'ABSPATH' ) ) {
14	exit; // Exit if accessed directly.
15	}
16
17	/**
18	* SearchAlgorithm abstract class
19	*/
20	abstract class SearchAlgorithm {
21	/**
22	* Return the Search Algorithm slug.
23	*
24	* @return string
25	*/
26	abstract public function get_slug() : string;
27
28	/**
29	* Return the Search Algorithm human readable name.
30	*
31	* @return string
32	*/
33	abstract public function get_name() : string;
34
35	/**
36	* Return the Search Algorithm description.
37	*
38	* @return string
39	*/
40	abstract public function get_description() : string;
41
42	/**
43	* Return the Elasticsearch `query` clause.
44	*
45	* @param string $indexable_slug Indexable slug
46	* @param string $search_term Search term(s)
47	* @param array $search_fields Search fields
48	* @param array $query_vars Query vars
49	* @return array ES `query`
50	*/
51	abstract protected function get_raw_query( string $indexable_slug, string $search_term, array $search_fields, array $query_vars ) : array;
52
53	/**
54	* Wrapper for the `get_raw_query`, making sure the `ep_{$indexable_slug}_formatted_args_query` filter is applied.
55	*
56	* @param string $indexable_slug Indexable slug
57	* @param string $search_term Search term(s)
58	* @param array $search_fields Search fields
59	* @param array $query_vars Query vars
60	* @return array ES `query`
61	*/
62	public function get_query( string $indexable_slug, string $search_term, array $search_fields, array $query_vars ) : array {
63	$query = $this->get_raw_query( $indexable_slug, $search_term, $search_fields, $query_vars );
64
65	/**
66	* Filter formatted Elasticsearch query (only contains query part)
67	*
68	* @hook ep_{$indexable_slug}_formatted_args_query
69	* @param {array} $query Current query
70	* @param {array} $query_vars Query variables
71	* @param {string} $search_text Search text
72	* @param {array} $search_fields Search fields
73	* @return {array} New query
74	*
75	* @since 4.3.0
76	*/
77	$query = apply_filters(
78	"ep_{$indexable_slug}_formatted_args_query",
79	$query,
80	$query_vars,
81	$search_term,
82	$search_fields
83	);
84
85	// Backwards-compatibility.
86	if ( 'post' === $indexable_slug ) {
87	/**
88	* Filter formatted Elasticsearch query for posts.
89	*
90	* This filter exists to keep backwards-compatibility. Newer implementations should use `ep_post_formatted_args_query`.
91	*
92	* @hook ep_formatted_args_query
93	* @param {array} $query Current query
94	* @param {array} $query_vars Query variables
95	* @param {string} $search_text Search text
96	* @param {array} $search_fields Search fields
97	* @return {array} New query
98	*
99	* @since 3.5.5 $search_text and $search_fields parameters added.
100	*/
101	$query = apply_filters_deprecated(
102	'ep_formatted_args_query',
103	[ $query, $query_vars, $search_term, $search_fields ],
104	'4.3.0',
105	'ep_post_formatted_args_query'
106	);
107	}
108
109	return $query;
110	}
111	}
112