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<?php |
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namespace vakata\database\driver\postgre; |
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use \vakata\database\DBException; |
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use \vakata\database\DriverInterface; |
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use \vakata\database\DriverAbstract; |
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use \vakata\database\StatementInterface; |
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use \vakata\database\schema\Table; |
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use \vakata\database\schema\TableRelation; |
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class Driver extends DriverAbstract implements DriverInterface |
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{ |
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protected $lnk = null; |
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protected $transaction = false; |
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public function __construct(array $connection) |
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{ |
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$this->connection = $connection; |
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} |
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public function __destruct() |
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{ |
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$this->disconnect(); |
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} |
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protected function connect() |
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{ |
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if ($this->lnk === null) { |
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$this->lnk = call_user_func( |
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$this->option('persist') ? '\pg_pconnect' : '\pg_connect', |
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implode(" ", [ |
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'user='.$this->connection['user'], |
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'password='.$this->connection['pass'], |
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'host='.$this->connection['host'], |
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'dbname='.$this->connection['name'], |
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"options='--client_encoding=".$this->option('charset', 'utf8')."'" |
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]) |
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); |
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if ($this->lnk === false) { |
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throw new DBException('Connect error'); |
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} |
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} |
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} |
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public function test() : bool |
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{ |
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if ($this->lnk) { |
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return true; |
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} |
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try { |
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$this->connect(); |
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return true; |
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} catch (\Exception $e) { |
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return false; |
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} |
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} |
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protected function disconnect() |
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{ |
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if (is_resource($this->lnk)) { |
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\pg_close($this->lnk); |
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} |
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} |
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public function prepare(string $sql) : StatementInterface |
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{ |
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$this->connect(); |
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$binder = '?'; |
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if (strpos($sql, $binder) !== false) { |
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$tmp = explode($binder, $sql); |
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$sql = ''; |
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foreach ($tmp as $i => $v) { |
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$sql .= $v; |
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if (isset($tmp[($i + 1)])) { |
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$sql .= '$'.($i + 1); |
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} |
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} |
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} |
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return new Statement($sql, $this->lnk); |
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} |
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public function begin() : bool |
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{ |
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$this->connect(); |
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try { |
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$this->transaction = true; |
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$this->query('BEGIN'); |
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} catch (DBException $e) { |
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$this->transaction = false; |
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return false; |
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} |
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return true; |
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} |
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public function commit() : bool |
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{ |
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$this->connect(); |
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$this->transaction = false; |
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try { |
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$this->query('COMMIT'); |
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} catch (DBException $e) { |
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return false; |
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} |
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return true; |
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} |
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public function rollback() : bool |
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{ |
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$this->connect(); |
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$this->transaction = false; |
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try { |
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$this->query('ROLLBACK'); |
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} catch (DBException $e) { |
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return false; |
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} |
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return true; |
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} |
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public function isTransaction() |
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{ |
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return $this->transaction; |
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} |
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} |
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vakata /
database
