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<?php
declare( strict_types = 1 );
namespace MediaWiki\Extension\Translate\TtmServer;
use Elastica\Query\AbstractQuery;
/**
* NOTE: the following class has been copied from elastica 2.3.1 :
* https://github.com/ruflin/Elastica/blob/2.3.1/lib/Elastica/Query/FuzzyLikeThis.php
* (few modifications have been made to comply with phpcs rules used by this extension)
* It is intended to be used as a temporary workaround with the wmf extra
* elasticsearch plugin with elasticsearch 2.x.
*
* The MIT License (MIT)
*
* Copyright (c) 2014 Nicolas Ruflin
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* (c.f. https://github.com/ruflin/Elastica/blob/2.3.1/LICENSE.txt)
* Fuzzy Like This query.
*
* @author Raul Martinez, Jr <juneym@gmail.com>
* @license MIT
* @link https://www.elastic.co/guide/en/elasticsearch/reference/1.7/query-dsl-flt-query.html *
* @since 2016.05
* @ingroup TTMServer
*/
class FuzzyLikeThis extends AbstractQuery {
private array $fieldNames = [];
private string $likeText = '';
private bool $ignoreTermFrequency = false;
private int $maxQueryTerms = 25;
private int $fuzziness = 2;
private int $prefixLength = 0;
private ?string $analyzer = null;
public function addFieldNames( array $fieldNames ): self {
$this->fieldNames = $fieldNames;
return $this;
}
public function setLikeText( string $text ): self {
$this->likeText = trim( $text );
return $this;
}
public function setIgnoreTermFrequency( bool $ignoreTermFrequency ): self {
$this->ignoreTermFrequency = $ignoreTermFrequency;
return $this;
}
public function setFuzziness( int $value ): self {
$this->fuzziness = $value;
return $this;
}
public function setPrefixLength( int $value ): self {
$this->prefixLength = $value;
return $this;
}
public function setMaxQueryTerms( int $value ): self {
$this->maxQueryTerms = $value;
return $this;
}
public function setAnalyzer( string $text ): self {
$this->analyzer = trim( $text );
return $this;
}
/**
* Converts fuzzy like this query to array.
* @return array Query array
* @see \Elastica\Query\AbstractQuery::toArray()
*/
public function toArray(): array {
$args = [];
if ( $this->fieldNames !== [] ) {
$args['fields'] = $this->fieldNames;
}
if ( $this->analyzer ) {
$args['analyzer'] = $this->analyzer;
}
$args['fuzziness'] = ( $this->fuzziness > 0 ) ? $this->fuzziness : 0;
$args['like_text'] = $this->likeText;
$args['prefix_length'] = $this->prefixLength;
$args['ignore_tf'] = $this->ignoreTermFrequency;
$args['max_query_terms'] = $this->maxQueryTerms;
$data = parent::toArray();
$args = array_merge( $args, $data['fuzzy_like_this'] );
return [ 'fuzzy_like_this' => $args ];
}
}