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<?php |
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/** |
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* @license LGPLv3, http://opensource.org/licenses/LGPL-3.0 |
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* @copyright Aimeos (aimeos.org), 2016 |
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* @package MW |
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* @subpackage DB |
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*/ |
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namespace Aimeos\MW\DB\Manager; |
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/** |
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* Manager for database connections using the DBAL library |
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* |
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* @package MW |
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* @subpackage DB |
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*/ |
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class DBAL implements \Aimeos\MW\DB\Manager\Iface |
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{ |
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private $config = null; |
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private $connections = []; |
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private $count = []; |
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/** |
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* Initializes the database manager object |
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* |
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* @param \Aimeos\MW\Config\Iface $config Object holding the configuration data |
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*/ |
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public function __construct( \Aimeos\MW\Config\Iface $config ) |
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{ |
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$this->config = $config; |
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} |
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/** |
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* Cleans up the object |
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*/ |
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public function __destruct() |
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{ |
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foreach( $this->connections as $name => $list ) |
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{ |
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foreach( $list as $conn ) { |
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unset( $conn ); |
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} |
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} |
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} |
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/** |
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* Clones the objects inside. |
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*/ |
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public function __clone() |
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{ |
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$this->config = clone $this->config; |
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foreach( $this->connections as $name => $list ) { |
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unset( $this->connections[$name] ); |
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} |
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} |
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/** |
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* Returns a database connection. |
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* |
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* @param string $name Name of the resource in configuration |
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* @return \Aimeos\MW\DB\Connection\Iface |
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*/ |
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public function acquire( $name = 'db' ) |
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{ |
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try |
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{ |
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$adapter = $this->config->get( 'resource/' . $name . '/adapter', 'mysql' ); |
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if( !isset( $this->connections[$name] ) || empty( $this->connections[$name] ) ) |
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{ |
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if( !isset( $this->count[$name] ) ) { |
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$this->count[$name] = 0; |
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} |
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$limit = $this->config->get( 'resource/' . $name . '/limit', -1 ); |
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if( $limit >= 0 && $this->count[$name] >= $limit ) |
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{ |
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$msg = sprintf( 'Maximum number of connections (%1$d) for "%2$s" exceeded', $limit, $name ); |
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throw new \Aimeos\MW\DB\Exception( $msg ); |
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} |
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$this->connections[$name] = array( $this->createConnection( $name, $adapter ) ); |
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$this->count[$name]++; |
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} |
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return array_pop( $this->connections[$name] ); |
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} |
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catch( \Exception $e ) { |
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throw new \Aimeos\MW\DB\Exception( $e->getMessage(), $e->getCode() ); |
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} |
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} |
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/** |
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* Releases the connection for reuse |
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* |
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* @param \Aimeos\MW\DB\Connection\Iface $connection Connection object |
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* @param string $name Name of resource |
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*/ |
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public function release( \Aimeos\MW\DB\Connection\Iface $connection, $name = 'db' ) |
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{ |
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if( ( $connection instanceof \Aimeos\MW\DB\Connection\DBAL ) === false ) { |
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throw new \Aimeos\MW\DB\Exception( 'Connection object isn\'t of type DBAL' ); |
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} |
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$this->connections[$name][] = $connection; |
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} |
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/** |
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* Creates a new database connection. |
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* |
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* @param string $name Name to the database configuration in the resource file |
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* @param string $adapter Name of the database adapter, e.g. "mysql" |
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* @return \Aimeos\MW\DB\Connection\Iface Database connection |
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*/ |
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protected function createConnection( $name, $adapter ) |
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{ |
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$params = $this->config->get( 'resource/' . $name ); |
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$params['user'] = $this->config->get( 'resource/' . $name . '/username' ); |
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$params['dbname'] = $this->config->get( 'resource/' . $name . '/database' ); |
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if( ( $socket = $this->config->get( 'resource/' . $name . '/socket' ) ) != null ) { |
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$params['unix_socket'] = $socket; |
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} |
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switch( $adapter ) |
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{ |
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case 'mysql': $params['driver'] = 'pdo_mysql'; break; |
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case 'oracle': $params['driver'] = 'oci8'; break; |
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case 'pgsql': $params['driver'] = 'pdo_pgsql'; break; |
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case 'sqlite': $params['driver'] = 'pdo_sqlite'; break; |
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default: $params['driver'] = $adapter; |
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} |
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$stmts = $this->config->get( 'resource/' . $name . '/stmt', [] ); |
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return new \Aimeos\MW\DB\Connection\DBAL( $params, $stmts ); |
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} |
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} |
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aimeos /
aimeos-core
According to the PSR-2, the body of a default statement must start on the line immediately following the statement.
To learn more about the PSR-2 coding standard, please refer to the PHP-Fig.