public void remove(Track track) {
synchronized (this) {
docElt.removeChild(track.getElement());
tracks.remove(track);
hash.remove(track.getKey());
}
}
public Track add(Track track) {
synchronized (this) {
Track copy;
if ((copy = getTrack(track)) == null) {
copy = new Track((Element) doc.importNode(track.getElement(), false));
docElt.appendChild(copy.getElement());
tracks.add(copy);
hash.put(copy.getKey(), copy);
}
return copy;
}
}
public void load(InputStream is) throws IOException, ParserConfigurationException, SAXException {
doc = db.parse(is);
docElt = doc.getDocumentElement();
if (docElt.getTagName().equals(docElementName)) {
NodeList nl = docElt.getElementsByTagName(trackElementName);
for (int i = 0; i < nl.getLength(); i++) {
Element elt = (Element) nl.item(i);
Track track = new Track(elt);
tracks.add(track);
hash.put(track.getKey(), track);
}
}
}
public Track getTrack(String key) {
return (Track) hash.get(key);
}