Source for file MDBnested.php

<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
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//  $Id: MDBnested.php 320703 2011-12-08 22:08:40Z danielc $
 
require_once 'Tree/Dynamic/MDBnested.php';
 
/**
*
*
*   @access     public
*   @author
*   @package    Tree
*/
class Tree_Memory_MDBnested extends Tree_Dynamic_MDBnested
{
 
    /**
     * retreive all the data from the db and prepare the data so the structure
     * can be built in the parent class
     *
     * @version 2002/04/20
     * @access  public
     * @author  Wolfram Kriesing <wolfram@kriesing.de>
     * @param   array   the result of a query which retreives (all)
     *                   the tree data from a DB
     * @return  array   the result
     */
    function setup($res = null)
    {
        if ($res == null) {
            //
            $whereAddOn = '';
            if ($this->options['whereAddOn']) {
                $whereAddOn = 'WHERE '.$this->getOption('whereAddOn');
            }
 
            //
            $orderBy = 'left';
            if ($order=$this->getOption('order')) {
                $orderBy = $order;
            }
 
            // build the query this way, that the root, which has no parent
            // (parentId=0) is first
            $query = sprintf('SELECT * FROM %s %s ORDER BY %s',
                                $this->table,
                                $whereAddOn,
                                // sort by the left-column, so we have the data
                                //sorted as it is supposed to be :-)
                                $this->_getColName($orderBy)
                                );
            if (MDB::isError($res = $this->dbh->getAll($query))) {
                return $this->_throwError($res->getMessage(), __LINE__);
            }
        }
 
        return $this->_prepareResults($res);
    }
 
}