Source for file XMLAssetIterator.class.php

<?php
/**
* @since 7/20/05
 * @package polyphony.repository_importer
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: XMLAssetIterator.class.php,v 1.8 2007/09/19 14:04:48 adamfranco Exp $
 */ 
 
require_once(DOMIT);
 
/**
* <##>
 * 
 * @since 7/20/05
 * @package polyphony.repository_importer
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: XMLAssetIterator.class.php,v 1.8 2007/09/19 14:04:48 adamfranco Exp $
 */
class XMLAssetIterator 
extends HarmoniIterator 
{
    /**
    * Constructor
     * 
     * @param String $sourceDirectory 
     * @param object $parentRepositoryImporter 
     * @return object 
     * @access public
     * @since 7/20/05
     */
    function XMLAssetIterator ($srcDir, $parentRepositoryImporter) {        
        $import = new DOMIT_Document();
        
        if ($import->loadXML($srcDir."metadata.xml")) {
            if (!($import->documentElement->hasChildNodes()))
                $parentRepositoryImporter->addError("There are no assets to import in: ".$srcDir."metadata.xml.");
 
            $this->_assetList =$import->documentElement->childNodes;
            $this->_current = 0;
        }
        else
            $parentRepositoryImporter->addError("XML parse failed: ".$srcDir."metadata.xml does not exist or contains poorly formed XML.");
    }
    
    /**
     * checks if the next element exists
     * 
     * @return boolean 
     * @access public
     * @since 7/20/05
     */
    function hasNext () {
        if ($this->_current < count($this->_assetList))
            return true;
        else
            return false;
    }
    
    /**
    * returns the next element
     * 
     * @return object DOMIT_Node 
     * @access public
     * @since 7/20/05
     */
    function next() {
        $temp =$this->_assetList[$this->_current];
        $this->_current++;
        return $temp;
    }
}
 
?>