92 lines
2.1 KiB
PHP
92 lines
2.1 KiB
PHP
<?php
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/**
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* Handles search algorithms registration and storage
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*
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* @since 4.3.0
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* @package elasticpress
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*/
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namespace ElasticPress;
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if ( ! defined( 'ABSPATH' ) ) {
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exit; // Exit if accessed directly.
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}
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/**
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* Class for handling all SearchAlgorithm
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*/
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class SearchAlgorithms {
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/**
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* Array of registered search algorithms
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*
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* @var array
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*/
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private $registered_search_algorithms = [];
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/**
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* Register a search algorithm
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*
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* @param SearchAlgorithm $search_algorithm Instance of Search Algorithm.
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*/
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public function register( SearchAlgorithm $search_algorithm ) {
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$this->registered_search_algorithms[ $search_algorithm->get_slug() ] = $search_algorithm;
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}
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/**
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* Get a search algorithm instance given a slug
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*
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* @param string $slug Search Algorithm slug
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* @return SearchAlgorithm
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*/
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public function get( string $slug ) {
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return ( ! empty( $this->registered_search_algorithms[ $slug ] ) ) ?
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$this->registered_search_algorithms[ $slug ] :
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$this->registered_search_algorithms['default'];
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}
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/**
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* Unregister a search algorithm.
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*
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* A search algorithm can only be unregistered if it is not the only one left.
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*
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* @param string $slug Search Algorithm slug
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* @return bool Whether the search algorithm was unregistered or not.
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*/
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public function unregister( string $slug ) {
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if ( isset( $this->registered_search_algorithms[ $slug ] ) && count( $this->registered_search_algorithms ) >= 2 ) {
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unset( $this->registered_search_algorithms[ $slug ] );
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return true;
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}
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return false;
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}
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/**
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* Get all search algorithm instances
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*
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* @param boolean $slug_only True returns an array of only string slugs.
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* @return array
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*/
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public function get_all( $slug_only = false ) {
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if ( $slug_only ) {
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return array_keys( $this->registered_search_algorithms );
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}
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return $this->registered_search_algorithms;
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}
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/**
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* Return singleton instance of class
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*
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* @return object
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*/
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public static function factory() {
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static $instance = false;
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if ( ! $instance ) {
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$instance = new self();
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}
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return $instance;
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}
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}
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