Current File : /www/varak.net/wiki.varak.net/extensions/CirrusSearch/includes/Query/PreferRecentFeature.php
<?php
namespace CirrusSearch\Query;
use Config;
use CirrusSearch\Search\SearchContext;
/**
* Matches "prefer-recent:" and then an optional floating point number <= 1 but
* >= 0 (decay portion) and then an optional comma followed by another floating
* point number >0 0 (half life).
*
* Examples:
* prefer-recent:
* prefer-recent:.6
* prefer-recent:0.5,.0001
*/
class PreferRecentFeature implements KeywordFeature {
/**
* @var float Default number of days for the portion of the score effected
* by this feature to be cut in half. Used when `prefer-recent:` is present
* in the query without any arguments.
*/
private $halfLife;
/**
* @var float Value between 0 and 1 indicating the default portion of the
* score affected by this feature when not specified in the search term.
*/
private $unspecifiedDecay;
/**
* @param Config $config
*/
public function __construct( Config $config ) {
$this->halfLife = $config->get( 'CirrusSearchPreferRecentDefaultHalfLife' );
$this->unspecifiedDecay = $config->get( 'CirrusSearchPreferRecentUnspecifiedDecayPortion' );
}
/**
* @param SearchContext $context
* @param string $term
* @return string
*/
public function apply( SearchContext $context, $term ) {
return QueryHelper::extractSpecialSyntaxFromTerm(
$context,
$term,
'/prefer-recent:(1|0?(?:\.\d+)?)?(?:,(\d*\.?\d+))? ?/',
function ( $matches ) use ( $context ) {
$decay = isset( $matches[1] ) && strlen( $matches[1] ) > 0
? $decay = floatval( $matches[1] )
: $decay = $this->unspecifiedDecay;
$halfLife = isset( $matches[2] )
? floatval( $matches[2] )
: $this->halfLife;
$context->setPreferRecentOptions( $decay, $halfLife );
$context->addSyntaxUsed( 'prefer-recent' );
return '';
}
);
}
}
Mini Shell