[jdom-interest] Empty child list

[Peter Kelley]

Hi,

I'm fairly new to JDOM but I think I have something that may be a bug.
I'm using the getChildren("name") call to get the children of an
element but when the list is examined it is empty. hasChildren("name")
is returning true and getChild("name") is returning an element of the
correct type. I am using the getChildren("name") successfully in other
places in the code.

Anyone got any ideas ?

The code and the output (which shows the input XML) is attatched
below...

    /**
     * Load journies by XML
     * @param doc a JDOM document containing journey information
     * //TODO: put a reference to the schema here
     * @throws DatabaseException if there was a problem accessing the database
     * @throws LegServiceNotFoundException if one of the leg services for a 
     * journey is not found
     */
    public void loadByXML(Document doc) 
        throws DatabaseException, 
               LegServiceNotFoundException,
               InvalidJourneyException
    {
        
        // By this stage the document has been validated against the schema so
        // no input checking is needed
        
        Element root = doc.getRootElement();
        
        List journies = root.getChildren();
        log.info("Loading " + journies.size() + " Journey objects");

        List legServices = null;
        List legServiceElements = null;
        Element journeyElement = null;
        Element legServiceElement = null;
        Journey journey = null;
        LegService legService = null;
        String name = null;
        long id = 0;
        long serviceID = 0;
        long legID = 0;
        
        LegServiceDAO lsDAO = new LegServiceDAO(session);
        
        for (Iterator i = journies.iterator();i.hasNext();) {
            try {
                journeyElement = (Element)(i.next());
                
                id = Long.parseLong(journeyElement.getAttributeValue("id"));
                name = journeyElement.getAttributeValue("name");
                journey = new Journey(id, name);
                
                log.debug("" + journeyElement.hasChildren());
                log.debug("" + journeyElement.getChild("legService"));
                legServiceElements = journeyElement.getChildren("legService");
                
                for (Iterator j = legServiceElements.iterator();i.hasNext();) {
                    legServiceElement = (Element)(j.next());
                    legID = Long.parseLong(
                        legServiceElement.getAttributeValue("legID"));
                    serviceID = Long.parseLong(
                        legServiceElement.getAttributeValue("serviceID"));
                    
                    legService = lsDAO.findByLegAndServiceID(legID, serviceID);
                    if (legService == null) {
                        throw new LegServiceNotFoundException(
                            "LegService with leg id " + legID +
                            " and service id " + serviceID + " not found");
                    }
                    log.debug("Adding leg service " + legService);
                    journey.addLegService(legService);
                }
                
                log.debug("Adding journey " + journey);
                create(journey);
            } catch (NumberFormatException e) {
                log.error("Error parsing number whilst importing",e);
            }
            
        }
        log.debug("Finished loading journies");
        
    }

17:51:51,859 INFO  [DAOHelper] Loading XML from file c:/source/projects/moveit/tests/data/xml\journey.xml
17:51:51,869 DEBUG [DAOHelper] Loaded XML from file c:/source/projects/moveit/tests/data/xml\journey.xml
17:51:51,869 DEBUG [DAOHelper] <?xml version="1.0" encoding="UTF-8"?>
<!-- Created by Administrator on 27 May 2002, 17:58 --><journies>
    <journey name="journey 1" id="1">
        <legService legID="2" serviceID="1" />
        <legService legID="6" serviceID="1" />
        <legService legID="5" serviceID="1" />
    </journey>
</journies>
17:51:51,889 INFO  [JourneyDAO] Loading 1 Journey objects
17:51:51,889 DEBUG [JourneyDAO] true
17:51:51,889 DEBUG [JourneyDAO] [Element: <legService/>]
17:51:51,889 DEBUG [JourneyDAO] Adding journey Journey[id=1;name=journey 1]
17:51:51,889 DEBUG [JourneyDAO] Finished loading journies


-- 

regards,
Peter Kelley

MoveIt Pty Ltd    

"If you want to build a ship, don't drum up the men to
gather wood, divide the work and give orders. Instead, 
teach them to yearn for the vast and endless sea."
- Saint-Exupery