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<?php
namespace SMW\Query;
use SMW\DIWikiPage;
/**
* Record scores for query results retrieved from stores that support the computation
* of relevance scores.
*
* @license GNU GPL v2+
* @since 3.0
*
* @author mwjames
*/
class ScoreSet {
/**
* @var []
*/
private $scores = [];
/**
* @var integer|null
*/
private $max_score = null;
/**
* @var integer|null
*/
private $min_score = null;
/**
* @since 3.0
*
* @param string|integer $max_score
*/
public function max_score( $max_score ) {
$this->max_score = $max_score;
}
/**
* @since 3.0
*
* @param string|integer $min_score
*/
public function min_score( $min_score ) {
$this->min_score = $min_score;
}
/**
* @note The hash is expected to match DIWikiPage::getHash to easily match
* result subjects available in an QueryResult instance.
*
* @since 3.0
*
* @param DIWikiPage|string $hash
* @param string|integer $score
*/
public function addScore( $hash, $score, $pos = null ) {
if ( $hash instanceof DIWikiPage ) {
$hash = $hash->getHash();
}
if ( $pos === null ) {
$this->scores[] = [ $hash, $score ];
} else {
$this->scores[$pos] = [ $hash, $score ];
}
}
/**
* @since 3.0
*
* @param DIWikiPage|string $hash
*
* @return string|integer|false
*/
public function getScore( $hash ) {
if ( $hash instanceof DIWikiPage ) {
$hash = $hash->getHash();
}
foreach ( $this->scores as $map ) {
if ( $map[0] === $hash ) {
return $map[1];
}
}
return false;
}
/**
* @since 3.0
*
* @return []
*/
public function getScores() {
return $this->scores;
}
/**
* @since 3.0
*
* @param boolean $usort
*/
public function usort( $usort ) {
if ( !$usort|| $this->scores === [] ) {
return;
}
usort( $this->scores, function( $a, $b ) {
if ( $a[1] == $b[1] ) {
return 0;
}
return ( $a[1] > $b[1] ) ? -1 : 1;
} );
}
/**
* @since 3.0
*
* @param string $class
*
* @return string
*/
public function asTable( $class = '' ) {
if ( $this->scores === [] ) {
return '';
}
$table = "<table class='$class'><thead>";
$table .= "<th>Score</th><th>Subject</th><th><span title='Sorting position'>Pos</span></th>";
$table .= "</thead><tbody>";
ksort( $this->scores );
foreach ( $this->scores as $pos => $set ) {
$table .= '<tr><td>' . $set[1] . '</td><td>' . $set[0] . '</td><td>' . $pos . '</td></tr>';
}
$table .= '</tbody></table>';
return $table;
}
}
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