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/
http/
yalagina/
libraries/
joomla/
database/
database/
- drwxr-xr-x
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Viewing file:  mysqlexporter.php (6.34 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
<?php
/**
* @package Joomla.Platform
* @subpackage Database
*
* @copyright Copyright (C) 2005 - 2012 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* MySQL export driver.
*
* @package Joomla.Platform
* @subpackage Database
* @since 11.1
*/
class JDatabaseExporterMySQL
{
/**
* An array of cached data.
*
* @var array
* @since 11.1
*/
protected $cache = array();
/**
* The database connector to use for exporting structure and/or data.
*
* @var JDatabaseMySQL
* @since 11.1
*/
protected $db = null;
/**
* An array input sources (table names).
*
* @var array
* @since 11.1
*/
protected $from = array();
/**
* The type of output format (xml).
*
* @var string
* @since 11.1
*/
protected $asFormat = 'xml';
/**
* An array of options for the exporter.
*
* @var JObject
* @since 11.1
*/
protected $options = null;
/**
* Constructor.
*
* Sets up the default options for the exporter.
*
* @since 11.1
*/
public function __construct()
{
$this->options = new JObject;
$this->cache = array('columns' => array(), 'keys' => array());
// Set up the class defaults:
// Export with only structure
$this->withStructure();
// Export as xml.
$this->asXml();
// Default destination is a string using $output = (string) $exporter;
}
/**
* Magic function to exports the data to a string.
*
* @return string
*
* @since 11.1
* @throws Exception if an error is encountered.
*/
public function __toString()
{
// Check everything is ok to run first.
$this->check();
$buffer = '';
// Get the format.
switch ($this->asFormat)
{
case 'xml':
default:
$buffer = $this->buildXml();
break;
}
return $buffer;
}
/**
* Set the output option for the exporter to XML format.
*
* @return JDatabaseExporterMySQL Method supports chaining.
*
* @since 11.1
*/
public function asXml()
{
$this->asFormat = 'xml';
return $this;
}
/**
* Builds the XML data for the tables to export.
*
* @return string An XML string
*
* @since 11.1
* @throws Exception if an error occurs.
*/
protected function buildXml()
{
$buffer = array();
$buffer[] = '<?xml version="1.0"?>';
$buffer[] = '<mysqldump xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">';
$buffer[] = ' <database name="">';
$buffer = array_merge($buffer, $this->buildXmlStructure());
$buffer[] = ' </database>';
$buffer[] = '</mysqldump>';
return implode("\n", $buffer);
}
/**
* Builds the XML structure to export.
*
* @return array An array of XML lines (strings).
*
* @since 11.1
* @throws Exception if an error occurs.
*/
protected function buildXmlStructure()
{
$buffer = array();
foreach ($this->from as $table)
{
// Replace the magic prefix if found.
$table = $this->getGenericTableName($table);
// Get the details columns information.
$fields = $this->db->getTableColumns($table);
$keys = $this->db->getTableKeys($table);
$buffer[] = ' <table_structure name="' . $table . '">';
foreach ($fields as $field)
{
$buffer[] = ' <field Field="' . $field->Field . '"' . ' Type="' . $field->Type . '"' . ' Null="' . $field->Null . '"' . ' Key="' .
$field->Key . '"' . (isset($field->Default) ? ' Default="' . $field->Default . '"' : '') . ' Extra="' . $field->Extra . '"' .
' />';
}
foreach ($keys as $key)
{
$buffer[] = ' <key Table="' . $table . '"' . ' Non_unique="' . $key->Non_unique . '"' . ' Key_name="' . $key->Key_name . '"' .
' Seq_in_index="' . $key->Seq_in_index . '"' . ' Column_name="' . $key->Column_name . '"' . ' Collation="' . $key->Collation . '"' .
' Null="' . $key->Null . '"' . ' Index_type="' . $key->Index_type . '"' . ' Comment="' . htmlspecialchars($key->Comment) . '"' .
' />';
}
$buffer[] = ' </table_structure>';
}
return $buffer;
}
/**
* Checks if all data and options are in order prior to exporting.
*
* @return JDatabaseExporterMySQL Method supports chaining.
*
* @since 11.1
*
* @throws Exception if an error is encountered.
*/
public function check()
{
// Check if the db connector has been set.
if (!($this->db instanceof JDatabaseMySQL))
{
throw new Exception('JPLATFORM_ERROR_DATABASE_CONNECTOR_WRONG_TYPE');
}
// Check if the tables have been specified.
if (empty($this->from))
{
throw new Exception('JPLATFORM_ERROR_NO_TABLES_SPECIFIED');
}
return $this;
}
/**
* Get the generic name of the table, converting the database prefix to the wildcard string.
*
* @param string $table The name of the table.
*
* @return string The name of the table with the database prefix replaced with #__.
*
* @since 11.1
*/
protected function getGenericTableName($table)
{
// TODO Incorporate into parent class and use $this.
$prefix = $this->db->getPrefix();
// Replace the magic prefix if found.
$table = preg_replace("|^$prefix|", '#__', $table);
return $table;
}
/**
* Specifies a list of table names to export.
*
* @param mixed $from The name of a single table, or an array of the table names to export.
*
* @return JDatabaseExporterMySQL Method supports chaining.
*
* @since 11.1
* @throws Exception if input is not a string or array.
*/
public function from($from)
{
if (is_string($from))
{
$this->from = array($from);
}
elseif (is_array($from))
{
$this->from = $from;
}
else
{
throw new Exception('JPLATFORM_ERROR_INPUT_REQUIRES_STRING_OR_ARRAY');
}
return $this;
}
/**
* Sets the database connector to use for exporting structure and/or data from MySQL.
*
* @param JDatabaseMySQL $db The database connector.
*
* @return JDatabaseExporterMySQL Method supports chaining.
*
* @since 11.1
*/
public function setDbo(JDatabaseMySQL $db)
{
$this->db = $db;
return $this;
}
/**
* Sets an internal option to export the structure of the input table(s).
*
* @param boolean $setting True to export the structure, false to not.
*
* @return JDatabaseExporterMySQL Method supports chaining.
*
* @since 11.1
*/
public function withStructure($setting = true)
{
$this->options->set('with-structure', (boolean) $setting);
return $this;
}
}
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