added database connectors and cleaned up configuration.

laravel/database/connectors/connector.php

@@ -0,0 +1,41 @@
+<?php namespace Laravel\Database\Connectors; use PDO;
+
+abstract class Connector {
+
+	/**
+	 * The PDO connection options.
+	 *
+	 * @var array
+	 */
+	protected $options = array(
+			PDO::ATTR_CASE => PDO::CASE_LOWER,
+			PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+			PDO::ATTR_ORACLE_NULLS => PDO::NULL_NATURAL,
+			PDO::ATTR_STRINGIFY_FETCHES => false,
+			PDO::ATTR_EMULATE_PREPARES => false,
+	);
+
+	/**
+	 * Establish a PDO database connection for a given database configuration.
+	 *
+	 * @param  array  $config
+	 * @return PDO
+	 */
+	abstract public function connect($config);
+
+	/**
+	 * Get the PDO connection options for a given database configuration.
+	 *
+	 * Developer specified options will override the default connection options.
+	 *
+	 * @param  array  $config
+	 * @return array
+	 */
+	protected function options($config)
+	{
+		$options = (isset($config['options'])) ? $config['options'] : array();
+
+		return array_merge($this->options, $options);
+	}
+
+}