public MediaFile getMediaFile(int trackId) {
if (!mediaFileCache.isElementInMemory(trackId)) {
LOG.debug("media file not in memory, load meta data from db!");
loadMediaFiles(Arrays.asList(trackId));
if (!mediaFileCache.isElementInMemory(trackId)) {
// trackId might refer to a playing track/video that since have been removed
return null;
}
}
return (MediaFile) mediaFileCache.get(trackId).getValue();
}
public void loadMediaFiles(List<Integer> mediaFileIds) {
List<Integer> missingMediaFileIds = new ArrayList<>(mediaFileIds);
for (Iterator<Integer> it = missingMediaFileIds.iterator(); it.hasNext(); ) {
if (mediaFileCache.isElementInMemory(it.next())) {
it.remove();
}
}
if (missingMediaFileIds.size() > 0) {
List<Track> tracks = libraryBrowserService.getTracks(missingMediaFileIds);
for (Track track : tracks) {
mediaFileCache.put(new Element(track.getId(), getMediaFile(track)));
}
}
}
