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<?php
/**
* @package Joomla.Platform
* @subpackage Database
*
* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
jimport('joomla.database.table');
/**
* Usergroup table class.
*
* @package Joomla.Platform
* @subpackage Database
* @since 11.1
*/
class JTableUsergroup extends JTable
{
/**
* Constructor
*
* @param JDatabase &$db A database connector object
*
* @since 11.1
*/
public function __construct(&$db)
{
parent::__construct('#__usergroups', 'id', $db);
}
/**
* Method to check the current record to save
*
* @return boolean True on success
*
* @since 11.1
*/
public function check()
{
// Validate the title.
if ((trim($this->title)) == '')
{
$this->setError(JText::_('JLIB_DATABASE_ERROR_USERGROUP_TITLE'));
return false;
}
// Check for a duplicate parent_id, title.
// There is a unique index on the (parent_id, title) field in the table.
$db = $this->_db;
$query = $db->getQuery(true)
->select('COUNT(title)')
->from($this->_tbl)
->where('title = ' . $db->quote(trim($this->title)))
->where('parent_id = ' . (int) $this->parent_id)
->where('id <> ' . (int) $this->id);
$db->setQuery($query);
if ($db->loadResult() > 0)
{
$this->setError(JText::_('JLIB_DATABASE_ERROR_USERGROUP_TITLE_EXISTS'));
return false;
}
return true;
}
/**
* Method to recursively rebuild the nested set tree.
*
* @param integer $parent_id The root of the tree to rebuild.
* @param integer $left The left id to start with in building the tree.
*
* @return boolean True on success
*
* @since 11.1
*/
public function rebuild($parent_id = 0, $left = 0)
{
// get the database object
$db = &$this->_db;
// get all children of this node
$db->setQuery('SELECT id FROM ' . $this->_tbl . ' WHERE parent_id=' . (int) $parent_id . ' ORDER BY parent_id, title');
$children = $db->loadColumn();
// the right value of this node is the left value + 1
$right = $left + 1;
// execute this function recursively over all children
for ($i = 0, $n = count($children); $i < $n; $i++)
{
// $right is the current right value, which is incremented on recursion return
$right = $this->rebuild($children[$i], $right);
// if there is an update failure, return false to break out of the recursion
if ($right === false)
{
return false;
}
}
// we've got the left value, and now that we've processed
// the children of this node we also know the right value
$db->setQuery('UPDATE ' . $this->_tbl . ' SET lft=' . (int) $left . ', rgt=' . (int) $right . ' WHERE id=' . (int) $parent_id);
// if there is an update failure, return false to break out of the recursion
if (!$db->execute())
{
return false;
}
// return the right value of this node + 1
return $right + 1;
}
/**
* Inserts a new row if id is zero or updates an existing row in the database table
*
* @param boolean $updateNulls If false, null object variables are not updated
*
* @return boolean True if successful, false otherwise and an internal error message is set
*
* @since 11.1
*/
public function store($updateNulls = false)
{
if ($result = parent::store($updateNulls))
{
// Rebuild the nested set tree.
$this->rebuild();
}
return $result;
}
/**
* Delete this object and its dependencies
*
* @param integer $oid The primary key of the user group to delete.
*
* @return mixed Boolean or Exception.
*
* @since 11.1
*/
public function delete($oid = null)
{
if ($oid)
{
$this->load($oid);
}
if ($this->id == 0)
{
return new JException(JText::_('JGLOBAL_CATEGORY_NOT_FOUND'));
}
if ($this->parent_id == 0)
{
return new JException(JText::_('JLIB_DATABASE_ERROR_DELETE_ROOT_CATEGORIES'));
}
if ($this->lft == 0 or $this->rgt == 0)
{
return new JException(JText::_('JLIB_DATABASE_ERROR_DELETE_CATEGORY'));
}
$db = $this->_db;
// Select the category ID and it's children
$query = $db->getQuery(true);
$query->select($db->quoteName('c') . '.' . $db->quoteName('id'));
$query->from($db->quoteName($this->_tbl) . 'AS c');
$query->where($db->quoteName('c') . '.' . $db->quoteName('lft') . ' >= ' . (int) $this->lft);
$query->where($db->quoteName('c') . '.' . $db->quoteName('rgt') . ' <= ' . (int) $this->rgt);
$db->setQuery($query);
$ids = $db->loadColumn();
if (empty($ids))
{
return new JException(JText::_('JLIB_DATABASE_ERROR_DELETE_CATEGORY'));
}
// Delete the category dependencies
// @todo Remove all related threads, posts and subscriptions
// Delete the category and its children
$query->clear();
$query->delete();
$query->from($db->quoteName($this->_tbl));
$query->where($db->quoteName('id') . ' IN (' . implode(',', $ids) . ')');
$db->setQuery($query);
if (!$db->execute())
{
$this->setError($db->getErrorMsg());
return false;
}
// Delete the usergroup in view levels
$replace = array();
foreach ($ids as $id)
{
$replace[] = ',' . $db->quote("[$id,") . ',' . $db->quote("[") . ')';
$replace[] = ',' . $db->quote(",$id,") . ',' . $db->quote(",") . ')';
$replace[] = ',' . $db->quote(",$id]") . ',' . $db->quote("]") . ')';
$replace[] = ',' . $db->quote("[$id]") . ',' . $db->quote("[]") . ')';
}
$query->clear();
//sqlsrv change. Alternative for regexp
$query->select('id, rules');
$query->from('#__viewlevels');
$db->setQuery($query);
$rules = $db->loadObjectList();
$match_ids = array();
foreach ($rules as $rule)
{
foreach ($ids as $id)
{
if (strstr($rule->rules, '[' . $id) || strstr($rule->rules, ',' . $id) || strstr($rule->rules, $id . ']'))
{
$match_ids[] = $rule->id;
}
}
}
if (!empty($match_ids))
{
$query = $db->getQuery(true);
$query->set('rules=' . str_repeat('replace(', 4 * count($ids)) . 'rules' . implode('', $replace));
$query->update('#__viewlevels');
$query->where('id IN (' . implode(',', $match_ids) . ')');
$db->setQuery($query);
if (!$db->execute())
{
$this->setError($db->getErrorMsg());
return false;
}
}
// Delete the user to usergroup mappings for the group(s) from the database.
$query->clear();
$query->delete();
$query->from($db->quoteName('#__user_usergroup_map'));
$query->where($db->quoteName('group_id') . ' IN (' . implode(',', $ids) . ')');
$db->setQuery($query);
$db->execute();
// Check for a database error.
if ($db->getErrorNum())
{
$this->setError($db->getErrorMsg());
return false;
}
return true;
}
}