169 lines
3.9 KiB
PHP
169 lines
3.9 KiB
PHP
<?php
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/**
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* Database Class File for PICKLES
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*
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* PHP version 5
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*
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* Licensed under the GNU General Public License Version 3
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* Redistribution of these files must retain the above copyright notice.
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*
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* @package PICKLES
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* @author Josh Sherman <josh@phpwithpickles.org>
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* @copyright Copyright 2007-2010, Gravity Boulevard, LLC
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* @license http://www.gnu.org/licenses/gpl.html GPL v3
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* @link http://phpwithpickles.org
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*/
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/**
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* Database Factory
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*
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* Generic class to simplify connecting to a database. All database objects
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* should be created by this class to future proof against any internal changes
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* to PICKLES.
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*/
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class Database extends Object
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{
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/**
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* Constructor
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*
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* Attempts to get an instance of the passed database type or attempts to
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* use a default specified in the config.
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*
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* @param string $name optional name of the connection to use
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*/
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public function __construct(String $name = null)
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{
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parent::__construct();
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return Database::getInstance($name);
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}
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/**
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* Get instance
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*
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* Looks up the datasource using the passed name and gets an instance of
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* it. Allows for easy sharing of certain classes within the system to
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* avoid the extra overhead of creating new objects each time. Also avoids
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* the hassle of passing around variables (yeah I know, very global-ish)
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*
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* @static
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* @param string $name name of the datasource
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* @return object instance of the class
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*/
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public static function getInstance($name = null)
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{
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$config = Config::getInstance();
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// Checks if we have a default
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if ($name == null)
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{
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if (is_array($config->datasources))
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{
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$datasources = $config->datasources;
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$name = key($datasources);
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}
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}
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if ($name != null)
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{
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if (isset($config->datasources[$name]))
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{
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$datasource = $config->datasources[$name];
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switch ($datasource['type'])
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{
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case 'Mongo':
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// Assembles the server string
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$server = 'mongodb://';
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if (isset($datasource['username']))
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{
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$server .= $datasource['username'];
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if (isset($datasource['password']))
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{
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$server .= ':' . $datasource['password'];
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}
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$server .= '@';
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}
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$server .= $datasource['hostname'] . ':' . $datasource['port'] . '/' . $datasource['database'];
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// Attempts to connect
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try
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{
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$instance = new Mongo($server, array('persist' => 'pickles'));
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// If we have database and collection, attempt to assign them
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if (isset($datasource['database']))
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{
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$instance = $instance->$datasource['database'];
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if (isset($datasource['collection']))
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{
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$instance = $instance->$datasource['collection'];
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}
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}
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}
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catch (Exception $exception)
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{
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throw new Exception('Unable to connect to Mongo database');
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}
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break;
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// @todo This is going to end up being all PDO driven
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case 'MySQL':
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if (!isset(self::$instances['Database'][$name]))
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{
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$class = 'Database_' . $datasource['type'];
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$instance = new $class();
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if (isset($datasource['hostname']))
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{
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$instance->setHostname($datasource['hostname']);
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}
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if (isset($datasource['port']))
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{
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$instance->setPort($datasource['port']);
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}
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if (isset($datasource['username']))
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{
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$instance->setUsername($datasource['username']);
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}
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if (isset($datasource['password']))
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{
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$instance->setPassword($datasource['password']);
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}
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if (isset($datasource['database']))
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{
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$instance->setDatabase($datasource['database']);
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}
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}
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break;
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default:
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throw new Exception('Datasource type "' . $datasource['type'] . '" is invalid');
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break;
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}
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if (isset($instance))
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{
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self::$instances['Database'][$name] = $instance;
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}
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return self::$instances['Database'][$name];
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}
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}
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return false;
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}
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}
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?>
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