114 lines
2.4 KiB
PHP
114 lines
2.4 KiB
PHP
<?php namespace Laravel\Database;
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use Laravel\Config;
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class Manager {
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/**
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* The established database connections.
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*
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* @var array
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*/
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protected $connections = array();
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/**
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* The configuration manager instance.
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*
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* @var Config
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*/
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protected $config;
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/**
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* Create a new database manager instance.
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*
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* @param Connector $connector
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* @return void
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*/
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public function __construct(Config $config)
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{
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$this->config = $config;
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}
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/**
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* Get a database connection.
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*
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* If no database name is specified, the default connection will be returned.
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*
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* Note: Database connections are managed as singletons.
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*
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* @param string $connection
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* @return Connection
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*/
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public function connection($connection = null)
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{
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if (is_null($connection)) $connection = $this->config->get('database.default');
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if ( ! array_key_exists($connection, $this->connections))
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{
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$config = $this->config->get("database.connections.{$connection}");
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if (is_null($config))
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{
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throw new \Exception("Database connection configuration is not defined for connection [$connection].");
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}
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$this->connections[$connection] = new Connection($this->connect($config), $config);
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}
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return $this->connections[$connection];
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}
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/**
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* Get a PDO database connection for a given database configuration.
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*
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* @param array $config
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* @return PDO
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*/
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protected function connect($config)
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{
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if (isset($config['connector'])) { return call_user_func($config['connector'], $config); }
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switch ($config['driver'])
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{
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case 'sqlite':
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$connector = new Connectors\SQLite;
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break;
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case 'mysql':
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$connector = new Connectors\MySQL;
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break;
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case 'pgsql':
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$connector = new Connectors\Postgres;
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break;
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default:
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throw new \Exception("Database driver [{$config['driver']}] is not supported.");
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}
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return $connector->connect($config);
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}
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/**
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* Begin a fluent query against a table.
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*
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* @param string $table
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* @param string $connection
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* @return Queries\Query
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*/
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public function table($table, $connection = null)
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{
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return $this->connection($connection)->table($table);
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}
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/**
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* Magic Method for calling methods on the default database connection.
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*
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* This provides a convenient API for querying or examining the default database connection.
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*/
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public function __call($method, $parameters)
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{
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return call_user_func_array(array($this->connection(), $method), $parameters);
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}
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} |