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<?php
namespace Elastica\Query;
/**
* Fuzzy Like This query.
*
* @author Raul Martinez, Jr <juneym@gmail.com>
*
* @link http://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-flt-query.html
*/
class FuzzyLikeThis extends AbstractQuery
{
/**
* Field names.
*
* @var array Field names
*/
protected $_fields = array();
/**
* 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;
/**
* minimum similarity.
*
* @var int minimum similarity
*/
protected $_minSimilarity = 0.5;
/**
* Prefix Length.
*
* @var int Prefix Length
*/
protected $_prefixLength = 0;
/**
* Boost.
*
* @var float Boost
*/
protected $_boost = 1.0;
/**
* Analyzer.
*
* @var sting Analyzer
*/
protected $_analyzer;
/**
* 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 $this
*/
public function setMinSimilarity($value)
{
$value = (float) $value;
$this->_minSimilarity = $value;
return $this;
}
/**
* Set boost.
*
* @param float $value Boost value
*
* @return $this
*/
public function setBoost($value)
{
$this->_boost = (float) $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->_boost)) {
$args['boost'] = $this->_boost;
}
if (!empty($this->_analyzer)) {
$args['analyzer'] = $this->_analyzer;
}
$args['min_similarity'] = ($this->_minSimilarity > 0) ? $this->_minSimilarity : 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 array('fuzzy_like_this' => $args);
}
}
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