database refactoring.

system/db/manager.php

@@ -0,0 +1,65 @@
+<?php namespace System\DB;
+
+use System\Config;
+
+class Manager {
+
+	/**
+	 * The established database connections.
+	 *
+	 * @var array
+	 */
+	public static $connections = array();
+
+	/**
+	 * Get a database connection. If no database name is specified, the default
+	 * connection will be returned as defined in the db configuration file.
+	 *
+	 * Note: Database connections are managed as singletons.
+	 *
+	 * @param  string      $connection
+	 * @return Connection
+	 */
+	public static function connection($connection = null)
+	{
+		if (is_null($connection))
+		{
+			$connection = Config::get('db.default');
+		}
+
+		if ( ! array_key_exists($connection, static::$connections))
+		{
+			$config = Config::get('db.connections');
+
+			if ( ! array_key_exists($connection, $config))
+			{
+				throw new \Exception("Database connection [$connection] is not defined.");
+			}
+
+			static::$connections[$connection] = new Connection($connection, (object) $config[$connection], new Connector);
+		}
+
+		return static::$connections[$connection];
+	}
+
+	/**
+	 * Begin a fluent query against a table.
+	 *
+	 * @param  string  $table
+	 * @param  string  $connection
+	 * @return Query
+	 */
+	public static function table($table, $connection = null)
+	{
+		return static::connection($connection)->table($table);
+	}
+
+	/**
+	 * Magic Method for calling methods on the default database connection.
+	 */
+	public static function __callStatic($method, $parameters)
+	{
+		return call_user_func_array(array(static::connection(), $method), $parameters);
+	}
+
+}