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<?php |
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/** |
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* Class for query building |
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* |
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* @file QueryBuilder.php |
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* |
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* PHP version 8.0+ |
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* |
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* @author Alexander Yancharuk <alex at itvault dot info> |
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* @copyright © 2012-2021 Alexander Yancharuk |
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* @date Сбт Июл 07 21:55:54 2012 |
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* @license The BSD 3-Clause License |
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* <https://tldrlegal.com/license/bsd-3-clause-license-(revised)> |
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*/ |
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namespace Veles\Model; |
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use Exception; |
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use Veles\DataBase\Db; |
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use Veles\DataBase\DbFilter; |
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use Veles\DataBase\DbPaginator; |
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/** |
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* Класс QueryBuilder |
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* @author Alexander Yancharuk <alex at itvault dot info> |
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*/ |
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class QueryBuilder implements QueryBuilderInterface |
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{ |
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/** |
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* @param $filter DbFilter |
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* |
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* @return array |
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*/ |
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protected function extractParams(DbFilter $filter) |
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{ |
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return [ |
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'where' => $filter->getWhere(), |
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'group' => $filter->getGroup(), |
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'having' => $filter->getHaving(), |
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'order' => $filter->getOrder() |
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]; |
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} |
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/** |
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* Построение sql-запроса для insert |
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* |
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* @param ActiveRecord $model Экземпляр модели |
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* |
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* @return string |
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* @throws Exception |
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*/ |
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public function insert(ActiveRecord $model) |
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{ |
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$fields = $values = ''; |
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foreach (array_keys($model->getMap()) as $property) { |
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$value = $this->sanitize($model, $property); |
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if (null === $value) { |
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continue; |
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} |
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$fields .= "\"$property\", "; |
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$values .= "$value, "; |
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} |
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$fields = rtrim($fields, ', '); |
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$values = rtrim($values, ', '); |
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return "INSERT \"" . $model::TBL_NAME . "\" ($fields) VALUES ($values)"; |
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} |
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/** |
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* Функция безопасности переменных |
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* |
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* @param ActiveRecord $model |
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* @param mixed $property |
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* |
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* @return mixed |
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* @throws Exception |
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*/ |
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private function sanitize(ActiveRecord $model, $property) |
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{ |
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if (!isset($model->$property)) { |
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return null; |
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} |
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$type = $model->getMap()[$property]; |
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if ('string' === $type) { |
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return Db::escape($model->$property); |
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} |
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$value = $model->$property; |
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settype($value, $type); |
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return $value; |
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} |
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/** |
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* Построение sql-запроса для update |
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* |
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* @param ActiveRecord $model Экземпляр модели |
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* |
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* @return string $sql |
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* @throws Exception |
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*/ |
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public function update(ActiveRecord $model) |
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{ |
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$params = ''; |
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$properties = array_diff_key($model->getMap(), ['id' => 1]); |
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foreach (array_keys($properties) as $property) { |
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$value = $this->sanitize($model, $property); |
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if (null === $value) { |
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continue; |
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} |
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$params .= "\"$property\" = $value, "; |
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} |
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$params = rtrim($params, ', '); |
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return "UPDATE \"" . $model::TBL_NAME . "\" SET $params WHERE id = $model->id"; |
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} |
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/** |
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* Построение sql-запроса для select |
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* @param ActiveRecord $model Экземпляр модели |
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* @param int $identifier primary key |
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* @return string $sql |
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*/ |
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public function getById(ActiveRecord $model, $identifier) |
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{ |
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$identifier = (int) $identifier; |
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return "SELECT * FROM \"" . $model::TBL_NAME . "\" WHERE id = $identifier LIMIT 1"; |
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} |
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/** |
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* Построение sql-запроса для delete |
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* |
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* @param ActiveRecord $model Экземпляр модели |
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* @param array $ids Массив ID для удаления |
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* |
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* @throws Exception |
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* @return string $sql |
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*/ |
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public function delete(ActiveRecord $model, array $ids) |
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{ |
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foreach ($ids as &$value) { |
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$value = (int) $value; |
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}; |
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$ids = implode(',', $ids); |
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return "DELETE FROM \"" . $model::TBL_NAME . "\" WHERE id IN ($ids)"; |
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} |
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/** |
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* Построение запроса получения списка объектов |
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* |
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* @param ActiveRecord $model Экземпляр модели |
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* @param bool|DbFilter $filter Экземпляр фильтра |
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* |
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* @return string |
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*/ |
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public function find(ActiveRecord $model, $filter) |
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{ |
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$fields = '"' . implode('", "', array_keys($model->getMap())) . '"'; |
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$where = $group = $having = $order = ''; |
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if ($filter instanceof DbFilter) { |
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$params = $this->extractParams($filter); |
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extract($params, EXTR_IF_EXISTS); |
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} |
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return rtrim("SELECT $fields FROM \"" . $model::TBL_NAME . "\" $where $group $having $order"); |
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} |
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/** |
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* Построение произвольного запроса с постраничным выводом |
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* |
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* @param string $sql Запрос |
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* @param DbPaginator $pager Экземпляр постраничного вывода |
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* |
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* @return string |
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*/ |
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public function setPage($sql, DbPaginator $pager) |
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{ |
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$sql = str_replace('SELECT', 'SELECT SQL_CALC_FOUND_ROWS', $sql); |
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return $sql . $pager->getSqlLimit(); |
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} |
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} |
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nafigator /
Veles
