cakephp2-php8/cake/libs/model/connection_manager.php
phpnut 73830ec0dc Merging fixes and enhancements into trunk
Revision: [1841]
Merging changes made in model_php5.php to model_php4.php

Revision: [1840]
Adding fix for PHP 5 when using mysql_connect setting.
Commented out the call to Dbo*::disconnect(). This was closing connections early.
Adding fixe for Ticket #302.
Adding Enhancement for Ticket #300.
Adding fix for Ticket #299
Adding Enhancement for Ticket #298
Adding fix for Ticket #297
Adding Enhancement/Patch from Ticket #296

Revision: [1838]
working on deeper recursive joins

Revision: [1837]
Updating copyright information in all files

Revision: [1836]
Adding fix when setting a field value to 0.
Before it would set this to NULL, which was not expected result.  


git-svn-id: https://svn.cakephp.org/repo/trunk/cake@1842 3807eeeb-6ff5-0310-8944-8be069107fe0
2006-01-20 07:46:14 +00:00

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PHP

<?php
/* SVN FILE: $Id$ */
/**
* Short description for file.
*
* Long description for file
*
* PHP versions 4 and 5
*
* CakePHP : Rapid Development Framework <http://www.cakephp.org/>
* Copyright (c) 2006, Cake Software Foundation, Inc.
* 1785 E. Sahara Avenue, Suite 490-204
* Las Vegas, Nevada 89104
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @filesource
* @copyright Copyright (c) 2006, Cake Software Foundation, Inc.
* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP Project
* @package cake
* @subpackage cake.cake.libs.model
* @since CakePHP v 0.10.x.1402
* @version $Revision$
* @modifiedby $LastChangedBy$
* @lastmodified $Date$
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
/**
* Manages loaded instances of DataSource objects
*
* Long description for file
*
* @package cake
* @subpackage cake.cake.libs.model
* @since CakePHP v 0.10.x.1402
*
*/
uses('model'.DS.'datasources'.DS.'datasource');
class ConnectionManager extends Object
{
/**
* Holds a loaded instance of the Connections object
*
* @var class:Connections
* @access public
*/
var $config = null;
/**
* Holds instances DataSource objects
*
* @var array
* @access private
*/
var $_dataSources = array();
/**
* Constructor.
*
*/
function __construct()
{
if(class_exists('DATABASE_CONFIG'))
{
$this->config = new DATABASE_CONFIG();
}
}
/**
* Gets a reference to the ConnectionManger object instance
*
* @return object
*/
function &getInstance()
{
static $instance = null;
if($instance == null)
{
$instance =& new ConnectionManager();
}
return $instance;
}
/**
* Gets a reference to a DataSource object
*
* @param string $name The name of the DataSource, as defined in app/config/connections
* @return object
*/
function &getDataSource($name)
{
$_this =& ConnectionManager::getInstance();
if(in_array($name, array_keys($_this->_dataSources)))
{
return $_this->_dataSources[$name];
}
if(in_array($name, array_keys(get_object_vars($_this->config))))
{
$config = $_this->config->{$name};
if(isset($config['driver']) && $config['driver'] != null && $config['driver'] != '')
{
$filename = 'dbo_'.$config['driver'];
$classname = Inflector::camelize(strtolower('DBO_'.$config['driver']));
}
else
{
$filename = $config['datasource'].'_source';
$classname = Inflector::camelize(strtolower($config['datasource'].'_source'));
}
$tail = 'dbo'.DS.$filename.'.php';
if (file_exists(LIBS.'model'.DS.$tail))
{
require_once(LIBS.'model'.DS.$tail);
}
else if (file_exists(MODELS.$tail))
{
require_once(MODELS.$tail);
}
else
{
trigger_error('Unable to load model file ' . $filename . '.php', E_USER_ERROR);
return null;
}
$_this->_dataSources[$name] =& new $classname($config);
$_this->_dataSources[$name]->configKeyName = $name;
}
else
{
trigger_error("ConnectionManager::getDataSource - Non-existent data source {$name}", E_USER_ERROR);
return null;
}
return $_this->_dataSources[$name];
}
}
?>