Source for file XMLThumbDataPartImporter.class.php

<?php
/**
 * @since 10/10/05
 * @package polyphony.importer
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: XMLThumbDataPartImporter.class.php,v 1.16 2007/09/19 14:04:47 adamfranco Exp $
 */ 
require_once(POLYPHONY."/main/library/Importer/XMLImporters/XMLImporter.class.php");
 
/**
 * imports the thumbnail data of a file, how interesting
 * 
 * @since 10/10/05
 * @package polyphony.importer
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: XMLThumbDataPartImporter.class.php,v 1.16 2007/09/19 14:04:47 adamfranco Exp $
 */
class XMLThumbDataPartImporter extends XMLImporter {
        
    /**
     *     Constructor
     * 
     * @return object XMLThumbDataPartImporter 
     * @access public
     * @since 10/10/05
     */
    function XMLThumbDataPartImporter ($existingArray) {
        parent::XMLImporter($existingArray);
    }
 
    /**
     * Sets up importer's self-knowledge
     * 
     * @access public
     * @since 10/10/05
     */
    function setupSelf () {
        $this->_childImporterList = NULL;
        $this->_childElementList = NULL;
        $this->_info = array();
    }
    
    /**
     * Filters nodes of incorrect type
     * 
     * @param object DOMIT_Node 
     * @return boolean 
     * @static
     * @access public
     * @since 10/10/05
     */
    function isImportable ($element) {
        if ($element->nodeName == "thumbdatapart")
            return true;
        else
            return false;
    }
 
    /**
     * Checks if the user is able to import underneath this level
     *
     * @param string $authZQString qualifier for authz checking
     * @access public
     * @since 11/3/05
     */
    function canImportBelow($authZQString) {
        return true;
    }
 
    /**
     * Imports the current node's information
     * 
     * @access public
     * @since 10/10/05
     */
    function importNode () {
        $idManager = Services::getService("Id");
        
        $this->getNodeInfo();
 
        if (in_array($this->_info['parentId']->getIdString(),
                $this->_existingArray) || ($this->_type == "update")) {
            $this->_myId =$this->_info['fileDataId'];
            $this->_object =$this->_parent->getPart($this->_myId);
                $this->update();
        } else {
            $this->_object =$this->_parent->createPart(
                $this->_info['partStructureId'], 
                file_get_contents($this->_info['value']));
            $this->_myId =$this->_object->getId();
        }
    }
 
    /**
     * Sets the node's internal information
     * 
     * @access public
     * @since 10/10/05
     */
    function getNodeInfo () {
        $idManager = Services::getService("Id");
    
        $path = $this->_node->getText();
        if (!ereg("^([a-zA-Z]+://|[a-zA-Z]+:\\|/)", $path))
            $path = $this->_node->ownerDocument->xmlPath.$path;
        
        $this->_info['value'] = $path;
        
        $this->_info['partStructureId'] =$idManager->getId("THUMBNAIL_DATA");
                            
        $this->_info['parentId'] = $this->_parent->getId();
        
        $this->_info['fileDataId'] =$idManager->getId(
            $this->_info['parentId']->getIdString()."-THUMBNAIL_DATA");
    }
    
    /**
     * Relegates Children to their classes
     * 
     * @param object mixed $topImporter will be passed down
     * @access public
     * @since 10/10/05
     */
    function relegateChildren ($topImporter) {
    }
    
    /**
     * Looks for discrepencies between imported data and current data
     * 
     * @access public
     * @since 10/10/05
     */
    function update () {
        if (isset($this->_info['value']) && !is_null($this->_info['value']) && (file_get_contents($this->_info['value']) !=
                $this->_object->getValue()))
        $this->_object->updateValue(file_get_contents($this->_info['value']));
    }
}
 
?>