1: <?php
  2: /**
  3:  * Magento
  4:  *
  5:  * NOTICE OF LICENSE
  6:  *
  7:  * This source file is subject to the Open Software License (OSL 3.0)
  8:  * that is bundled with this package in the file LICENSE.txt.
  9:  * It is also available through the world-wide-web at this URL:
 10:  * http://opensource.org/licenses/osl-3.0.php
 11:  * If you did not receive a copy of the license and are unable to
 12:  * obtain it through the world-wide-web, please send an email
 13:  * to license@magentocommerce.com so we can send you a copy immediately.
 14:  *
 15:  * DISCLAIMER
 16:  *
 17:  * Do not edit or add to this file if you wish to upgrade Magento to newer
 18:  * versions in the future. If you wish to customize Magento for your
 19:  * needs please refer to http://www.magentocommerce.com for more information.
 20:  *
 21:  * @category    Mage
 22:  * @package     Mage_Install
 23:  * @copyright   Copyright (c) 2012 Magento Inc. (http://www.magentocommerce.com)
 24:  * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 25:  */
 26: 
 27: /**
 28:  * Abstract resource data model
 29:  *
 30:  * @category    Mage
 31:  * @package     Mage_Install
 32:  * @author      Magento Core Team <core@magentocommerce.com>
 33:  */
 34: abstract class Mage_Install_Model_Installer_Db_Abstract
 35: {
 36:     /**
 37:      *  Adapter instance
 38:      *
 39:      * @var Varien_Db_Adapter_Interface
 40:      */
 41:     protected $_connection;
 42: 
 43:     /**
 44:      *  Connection configuration
 45:      *
 46:      * @var array
 47:      */
 48:     protected $_connectionData;
 49: 
 50:     /**
 51:      *  Connection configuration
 52:      *
 53:      * @var array
 54:      */
 55:     protected $_configData;
 56: 
 57: 
 58:     /**
 59:      * Return the name of DB model from config
 60:      *
 61:      * @return string
 62:      */
 63:     public function getModel()
 64:     {
 65:         return $this->_configData['db_model'];
 66:     }
 67: 
 68: 
 69:     /**
 70:      * Return the DB type from config
 71:      *
 72:      * @return string
 73:      */
 74:     public function getType()
 75:     {
 76:         return $this->_configData['db_type'];
 77:     }
 78: 
 79:     /**
 80:      * Set configuration data
 81:      *
 82:      * @param array $config the connection configuration
 83:      */
 84:     public function setConfig($config)
 85:     {
 86:         $this->_configData = $config;
 87:     }
 88: 
 89:     /**
 90:      * Retrieve connection data from config
 91:      *
 92:      * @return array
 93:      */
 94:     public function getConnectionData()
 95:     {
 96:         if (!$this->_connectionData) {
 97:             $connectionData = array(
 98:                 'host'      => $this->_configData['db_host'],
 99:                 'username'  => $this->_configData['db_user'],
100:                 'password'  => $this->_configData['db_pass'],
101:                 'dbname'    => $this->_configData['db_name'],
102:                 'pdoType'   => $this->getPdoType()
103:             );
104:             $this->_connectionData = $connectionData;
105:         }
106:         return $this->_connectionData;
107:     }
108: 
109:     /**
110:      * Check InnoDB support
111:      *
112:      * @return bool
113:      */
114:     public function supportEngine()
115:     {
116:         return true;
117:     }
118: 
119:     /**
120:      * Create new connection with custom config
121:      *
122:      * @return Varien_Db_Adapter_Interface
123:      */
124:     protected function _getConnection()
125:     {
126:         if (!isset($this->_connection)) {
127:             $resource   = Mage::getSingleton('core/resource');
128:             $connection = $resource->createConnection('install', $this->getType(), $this->getConnectionData());
129:             $this->_connection = $connection;
130:         }
131:         return $this->_connection;
132:     }
133: 
134:     /**
135:      * Return pdo type
136:      *
137:      * @return null
138:      */
139:     public function getPdoType()
140:     {
141:         return null;
142:     }
143: 
144:     /**
145:      * Retrieve required PHP extension list for database
146:      *
147:      * @return array
148:      */
149:     public function getRequiredExtensions()
150:     {
151:         $extensions = array();
152:         $configExt = (array)Mage::getConfig()->getNode(sprintf('install/databases/%s/extensions', $this->getModel()));
153:         foreach ($configExt as $name=>$value) {
154:             $extensions[] = $name;
155:         }
156:         return $extensions;
157:     }
158: }
159: