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<?php |
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use Pecee\Pixie\QueryBuilder\JoinBuilder; |
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abstract class MatchActivityQueryBuilder extends QueryBuilderFlex |
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{ |
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/** |
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* @throws \Pecee\Pixie\Exception |
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* @throws Exception |
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* |
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* @return static |
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*/ |
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protected function getMatchActivityWorthQuery() |
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{ |
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$qb = self::createBuilder(); |
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// The subquery to calculate each match's worth towards activity if it has occurred less than 45 days ago. |
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// - 86400 is in seconds; i.e. 24 hours |
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// - 0.0116687059537612 is a magic number |
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$matchActivityWorthQuery = $qb->table('matches')->alias('m'); |
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$matchActivityWorthQuery |
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->select([ |
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'm.id', |
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$qb->raw('TIMESTAMPDIFF(SECOND, `m`.`timestamp`, NOW()) / 86400 AS days_passed'), |
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$qb->raw('(0.0116687059537612 * (POW((45 - LEAST((SELECT days_passed), 45)), (1/6)) + ATAN(31 - (SELECT days_passed)) / 2)) AS activity'), |
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]) |
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->where($qb->raw('DATEDIFF(NOW(), `m`.`timestamp`) <= 45')) |
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->orderBy('m.timestamp', 'DESC') |
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; |
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return $matchActivityWorthQuery; |
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} |
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/** |
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* @throws \Pecee\Pixie\Exception |
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* @throws Exception |
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*/ |
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protected function buildMatchActivity(QueryBuilderFlex $subQuery, JoinBuilder $joinBuilder) |
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{ |
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$qb = self::createBuilder(); |
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$type = $this->modelType; |
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$this |
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->select( |
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$qb->raw('SUM(m2.activity) AS activity') |
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) |
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->leftJoin( |
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$qb->subQuery($subQuery, 'm2'), |
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function (&$table) use ($joinBuilder) { |
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$table = $joinBuilder; |
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} |
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) |
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->groupBy($type::getEagerColumnsList()) |
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; |
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return $this; |
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} |
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} |
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