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<?php |
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namespace Win\Repositories\Database; |
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use PDO; |
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use PDOException; |
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use PDOStatement; |
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use Win\Common\Traits\SingletonTrait; |
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use Win\Request\HttpException; |
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/** |
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* Conexão com banco de dados |
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*/ |
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abstract class Connection |
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{ |
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use SingletonTrait; |
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/** @var PDO */ |
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protected $pdo; |
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/** @var PDOException */ |
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public $pdoException; |
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/** |
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* Cria e retorna conexão PDO |
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* @param string[] $db Configuração de Conexão |
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* @throws PDOException |
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* @return PDO |
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*/ |
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abstract protected function createPdo(&$db); |
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/** @return PDO */ |
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public function getPdo() |
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{ |
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return $this->pdo; |
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} |
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/** |
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* Cria uma conexão com um banco de dados |
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* @param string[] $dbConfig |
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*/ |
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public function connect($dbConfig) |
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{ |
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try { |
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$this->pdo = $this->createPdo($dbConfig); |
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$this->pdo->exec('set names utf8'); |
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$this->pdoException = null; |
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} catch (\PDOException $e) { |
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$message = 'Houve um erro ao conectar o banco de dados'; |
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throw new HttpException($message, 503, $e); |
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} |
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} |
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/** |
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* Retorna TRUE caso a conexão tenha sido bem sucedida |
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* @return bool |
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*/ |
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public function isValid() |
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{ |
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return is_null($this->pdoException) && $this->pdo instanceof \PDO; |
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} |
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/** |
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* @param string $query |
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* @param mixed[] $values |
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* @return bool |
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*/ |
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public function execute($query, $values = []) |
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{ |
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try { |
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$stmt = $this->pdo->prepare($query); |
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return $stmt->execute($values); |
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} catch (PDOException $e) { |
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throw new DatabaseException($e); |
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} |
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} |
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/** |
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* @param string $query |
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* @param mixed[] $values |
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* @return PDOStatement|bool |
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*/ |
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public function stmt($query, $values = []) |
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{ |
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try { |
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$stmt = $this->pdo->prepare($query); |
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$stmt->execute($values); |
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return $stmt; |
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} catch (PDOException $e) { |
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throw new DatabaseException($e); |
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} |
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} |
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/** |
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* @param string $query |
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* @param mixed[] $values |
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* @return mixed[] |
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*/ |
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public function fetchAll($query, $values = []) |
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{ |
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return $this->stmt($query, $values)->fetchAll(PDO::FETCH_ASSOC); |
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} |
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/** |
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* @param string $query |
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* @param mixed[] $values |
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* @return mixed[] |
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*/ |
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public function fetch($query, $values) |
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{ |
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return $this->stmt($query, $values)->fetch(); |
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} |
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/** |
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* @param string $query |
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* @param mixed[] $values |
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* @return int |
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*/ |
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public function fetchCount($query, $values) |
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{ |
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return $this->stmt($query, $values)->fetchColumn(); |
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} |
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/** @return string */ |
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public function getLastInsertId() |
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{ |
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return $this->pdo->lastInsertId(); |
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} |
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} |
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winframework /
winphp
