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<?php
/**
* 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)
*
* @file
* @license MIT
* @ingroup TTMServer
*/
/**
* Fuzzy Like This query.
*
* @author Raul Martinez, Jr <juneym@gmail.com>
*
* @link https://www.elastic.co/guide/en/elasticsearch/reference/1.7/query-dsl-flt-query.html
*
* @since 2016.05
* @ingroup TTMServer
*/
class FuzzyLikeThis extends \Elastica\Query\AbstractQuery {
// phpcs:disable PSR2.Classes.PropertyDeclaration.Underscore
/**
* Field names.
*
* @var array Field names
*/
protected $_fields = [];
/**
* Like text.
*
* @var string Like text
*/
protected $_likeText = '';
/**
* Ignore term frequency.
*
* @var bool ignore term frequency
*/
protected $_ignoreTF = false;
/**
* Max query terms value.
*
* @var int Max query terms value
*/
protected $_maxQueryTerms = 25;
/**
* fuzziness.
*
* @var int fuzziness
*/
protected $_fuzziness = 2;
/**
* Prefix Length.
*
* @var int Prefix Length
*/
protected $_prefixLength = 0;
/**
* Analyzer.
*
* @var string Analyzer
*/
protected $_analyzer;
// phpcs:enable
/**
* Adds field to flt query.
*
* @param array $fields Field names
*
* @return $this
*/
public function addFields( array $fields ) {
$this->_fields = $fields;
return $this;
}
/**
* Set the "like_text" value.
*
* @param string $text
*
* @return $this
*/
public function setLikeText( $text ) {
$text = trim( $text );
$this->_likeText = $text;
return $this;
}
/**
* Set the "ignore_tf" value (ignore term frequency).
*
* @param bool $ignoreTF
*
* @return $this
*/
public function setIgnoreTF( $ignoreTF ) {
$this->_ignoreTF = (bool)$ignoreTF;
return $this;
}
/**
* Set the minimum similarity.
*
* @param int $value
*
* @return $this
*/
public function setFuzziness( $value ) {
$value = (int)$value;
$this->_fuzziness = $value;
return $this;
}
/**
* Set Prefix Length.
*
* @param int $value Prefix length
*
* @return $this
*/
public function setPrefixLength( $value ) {
$this->_prefixLength = (int)$value;
return $this;
}
/**
* Set max_query_terms.
*
* @param int $value Max query terms value
*
* @return $this
*/
public function setMaxQueryTerms( $value ) {
$this->_maxQueryTerms = (int)$value;
return $this;
}
/**
* Set analyzer.
*
* @param string $text Analyzer text
*
* @return $this
*/
public function setAnalyzer( $text ) {
$text = trim( $text );
$this->_analyzer = $text;
return $this;
}
/**
* Converts fuzzy like this query to array.
*
* @return array Query array
*
* @see \Elastica\Query\AbstractQuery::toArray()
*/
public function toArray() {
if ( !empty( $this->_fields ) ) {
$args['fields'] = $this->_fields;
}
if ( !empty( $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->_ignoreTF;
$args['max_query_terms'] = $this->_maxQueryTerms;
$data = parent::toArray();
$args = array_merge( $args, $data['fuzzy_like_this'] );
return [ 'fuzzy_like_this' => $args ];
}
}
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