merged skunkworks into develop.

laravel/database.php

@@ -0,0 +1,129 @@
+<?php namespace Laravel;
+
+use Laravel\Database\Expression;
+use Laravel\Database\Connection;
+
+class Database {
+
+	/**
+	 * 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.
+	 *
+	 * <code>
+	 *		// Get the default database connection for the application
+	 *		$connection = DB::connection();
+	 *
+	 *		// Get a specific connection by passing the connection name
+	 *		$connection = DB::connection('mysql');
+	 * </code>
+	 *
+	 * @param  string      $connection
+	 * @return Connection
+	 */
+	public static function connection($connection = null)
+	{
+		if (is_null($connection)) $connection = Config::get('database.default');
+
+		if ( ! isset(static::$connections[$connection]))
+		{
+			$config = Config::get("database.connections.{$connection}");
+
+			if (is_null($config))
+			{
+				throw new \Exception("Database connection is not defined for [$connection].");
+			}
+
+			static::$connections[$connection] = new Connection(static::connect($config), $config);
+		}
+
+		return static::$connections[$connection];
+	}
+
+	/**
+	 * Get a PDO database connection for a given database configuration.
+	 *
+	 * @param  array  $config
+	 * @return PDO
+	 */
+	protected static function connect($config)
+	{
+		return static::connector($config['driver'])->connect($config);
+	}
+
+	/**
+	 * Create a new database connector instance.
+	 *
+	 * @param  string     $driver
+	 * @return Connector
+	 */
+	protected static function connector($driver)
+	{
+		switch ($driver)
+		{
+			case 'sqlite':
+				return new Database\Connectors\SQLite;
+
+			case 'mysql':
+				return new Database\Connectors\MySQL;
+
+			case 'pgsql':
+				return new Database\Connectors\Postgres;
+
+			case 'sqlsrv':
+				return new Database\Connectors\SQLServer;
+
+			default:
+				throw new \Exception("Database driver [$driver] is not supported.");
+		}
+	}
+
+	/**
+	 * Begin a fluent query against a table.
+	 *
+	 * @param  string          $table
+	 * @param  string          $connection
+	 * @return Queries\Query
+	 */
+	public static function table($table, $connection = null)
+	{
+		return static::connection($connection)->table($table);
+	}
+
+	/**
+	 * Create a new database expression instance.
+	 *
+	 * Database expressions are used to inject raw SQL into a fluent query.
+	 *
+	 * @param  string      $value
+	 * @return Expression
+	 */
+	public static function raw($value)
+	{
+		return new Expression($value);
+	}
+
+	/**
+	 * Magic Method for calling methods on the default database connection.
+	 *
+	 * <code>
+	 *		// Get the driver name for the default database connection
+	 *		$driver = DB::driver();
+	 *
+	 *		// Execute a fluent query on the default database connection
+	 *		$users = DB::table('users')->get();
+	 * </code>
+	 */
+	public static function __callStatic($method, $parameters)
+	{
+		return call_user_func_array(array(static::connection(), $method), $parameters);
+	}
+
+}