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* (c) 2004-2006 Sean Kerr * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ /** * sfPostgreSQLDatabase provides connectivity for the PostgreSQL brand database. * * Optional parameters: * * # database - [none] - The database name. * # host - [localhost] - The database host. * # method - [normal] - How to read connection parameters. * Possible values are normal, server, and * env. The normal method reads them from * the specified values. server reads them * from $_SERVER where the keys to retrieve * the values are what you specify the value * as in the settings. env reads them from * $_ENV and works like $_SERVER. * # password - [none] - The database password. * # persistent - [No] - Indicates that the connection should be * persistent. * # port - [none] - TCP/IP port on which PostgreSQL is * listening. * # username - [none] - The database username. * * @package symfony * @subpackage database * @author Fabien Potencier * @author Sean Kerr * @version SVN: $Id: sfPostgreSQLDatabase.class.php 7792 2008-03-09 22:06:59Z fabien $ */ class sfPostgreSQLDatabase extends sfDatabase { /** * Connects to the database. * * @throws sfDatabaseException If a connection could not be created */ public function connect() { // determine how to get our parameters $method = $this->getParameter('method', 'normal'); // get parameters switch ($method) { case 'normal': // get parameters normally $database = $this->getParameter('database'); $host = $this->getParameter('host'); $password = $this->getParameter('password'); $port = $this->getParameter('port'); $username = $this->getParameter('username'); // construct connection string $string = ($database != null ? (' dbname=' .$database) : ''). ($host != null ? (' host=' .$host) : ''). ($password != null ? (' password=' .$password) : ''). ($port != null ? (' port=' .$port) : ''). ($username != null ? (' user=' .$username) : ''); break; case 'server': // construct a connection string from existing $_SERVER values $string = $this->loadParameters($_SERVER); break; case 'env': // construct a connection string from existing $_ENV values $string = $this->loadParameters($_ENV); break; default: // who knows what the user wants... throw new sfDatabaseException(sprintf('Invalid PostgreSQLDatabase parameter retrieval method "%s".', $method)); } // let's see if we need a persistent connection $persistent = $this->getParameter('persistent', false); $connect = $persistent ? 'pg_pconnect' : 'pg_connect'; $this->connection = @$connect($string); // make sure the connection went through if ($this->connection === false) { // the connection's foobar'd throw new sfDatabaseException('Failed to create a PostgreSQLDatabase connection.'); } // since we're not an abstraction layer, we copy the connection // to the resource $this->resource = $this->connection; } /** * Loads connection parameters from an existing array. * * @return string A connection string */ protected function loadParameters(&$array) { $database = $this->getParameter('database'); $host = $this->getParameter('host'); $password = $this->getParameter('password'); $port = $this->getParameter('port'); $username = $this->getParameter('username'); // construct connection string $string = ($database != null ? (' dbname=' .$array[$database]) : ''). ($host != null ? (' host=' .$array[$host]) : ''). ($password != null ? (' password='.$array[$password]) : ''). ($port != null ? (' port=' .$array[$port]) : ''). ($username != null ? (' user=' .$array[$username]) : ''); return $string; } /** * Executes the shutdown procedure. * * @throws sfDatabaseException If an error occurs while shutting down this database */ public function shutdown() { if ($this->connection != null) { @pg_close($this->connection); } } }