File joomla/database/exporter/mysqli.php | Joomla! Framework TM

  1 <?php
  2 /**
  3  * @package     Joomla.Platform
  4  * @subpackage  Database
  5  *
  6  * @copyright   Copyright (C) 2005 - 2017 Open Source Matters, Inc. All rights reserved.
  7  * @license     GNU General Public License version 2 or later; see LICENSE
  8  */
  9 
 10 defined('JPATH_PLATFORM') or die;
 11 
 12 /**
 13  * MySQLi export driver.
 14  *
 15  * @since  11.1
 16  */
 17 class JDatabaseExporterMysqli extends JDatabaseExporter
 18 {
 19     /**
 20      * Builds the XML data for the tables to export.
 21      *
 22      * @return  string  An XML string
 23      *
 24      * @since   11.1
 25      * @throws  Exception if an error occurs.
 26      */
 27     protected function buildXml()
 28     {
 29         $buffer = array();
 30 
 31         $buffer[] = '<?xml version="1.0"?>';
 32         $buffer[] = '<mysqldump xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">';
 33         $buffer[] = ' <database name="">';
 34 
 35         $buffer = array_merge($buffer, $this->buildXmlStructure());
 36 
 37         $buffer[] = ' </database>';
 38         $buffer[] = '</mysqldump>';
 39 
 40         return implode("\n", $buffer);
 41     }
 42 
 43     /**
 44      * Builds the XML structure to export.
 45      *
 46      * @return  array  An array of XML lines (strings).
 47      *
 48      * @since   11.1
 49      * @throws  Exception if an error occurs.
 50      */
 51     protected function buildXmlStructure()
 52     {
 53         $buffer = array();
 54 
 55         foreach ($this->from as $table)
 56         {
 57             // Replace the magic prefix if found.
 58             $table = $this->getGenericTableName($table);
 59 
 60             // Get the details columns information.
 61             $fields = $this->db->getTableColumns($table, false);
 62             $keys = $this->db->getTableKeys($table);
 63 
 64             $buffer[] = '  <table_structure name="' . $table . '">';
 65 
 66             foreach ($fields as $field)
 67             {
 68                 $buffer[] = '   <field Field="' . $field->Field . '"' . ' Type="' . $field->Type . '"' . ' Null="' . $field->Null . '"' . ' Key="' .
 69                     $field->Key . '"' . (isset($field->Default) ? ' Default="' . $field->Default . '"' : '') . ' Extra="' . $field->Extra . '"' .
 70                     ' />';
 71             }
 72 
 73             foreach ($keys as $key)
 74             {
 75                 $buffer[] = '   <key Table="' . $table . '"' . ' Non_unique="' . $key->Non_unique . '"' . ' Key_name="' . $key->Key_name . '"' .
 76                     ' Seq_in_index="' . $key->Seq_in_index . '"' . ' Column_name="' . $key->Column_name . '"' . ' Collation="' . $key->Collation . '"' .
 77                     ' Null="' . $key->Null . '"' . ' Index_type="' . $key->Index_type . '"' .
 78                     ' Comment="' . htmlspecialchars($key->Comment, ENT_COMPAT, 'UTF-8') . '"' . ' />';
 79             }
 80 
 81             $buffer[] = '  </table_structure>';
 82         }
 83 
 84         return $buffer;
 85     }
 86 
 87     /**
 88      * Checks if all data and options are in order prior to exporting.
 89      *
 90      * @return  JDatabaseExporterMysqli  Method supports chaining.
 91      *
 92      * @since   11.1
 93      * @throws  Exception if an error is encountered.
 94      */
 95     public function check()
 96     {
 97         // Check if the db connector has been set.
 98         if (!($this->db instanceof JDatabaseDriverMysqli))
 99         {
100             throw new Exception('JPLATFORM_ERROR_DATABASE_CONNECTOR_WRONG_TYPE');
101         }
102 
103         // Check if the tables have been specified.
104         if (empty($this->from))
105         {
106             throw new Exception('JPLATFORM_ERROR_NO_TABLES_SPECIFIED');
107         }
108 
109         return $this;
110     }
111 }
112
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