/**
* Retrieves an album from the provider, and put it in the cache
*
* @param ref The reference to the album
* @param provider The provider from which retrieve the album
* @return The album, or null if the provider says so
*/
public Album retrieveAlbum(final String ref, final ProviderIdentifier provider) {
if (ref == null) {
// Force get stack trace
try {
throw new RuntimeException();
} catch (RuntimeException e) {
Log.e(TAG, "retrieveAlbum called with a null reference", e);
}
return null;
}
// Try from cache
Album output = mCache.getAlbum(ref);
if (output == null && provider != null) {
ProviderConnection pc = PluginsLookup.getDefault().getProvider(provider);
if (pc != null) {
IMusicProvider binder = pc.getBinder();
if (binder != null) {
try {
output = binder.getAlbum(ref);
onAlbumUpdate(provider, output);
} catch (DeadObjectException e) {
Log.e(TAG, "Provider died while retrieving album");
} catch (RemoteException e) {
Log.e(TAG, "Unable to retrieve the album", e);
}
}
}
}
return output;
}
/** Called by the providers when the details of a song have been updated. */
@Override
public void onSongUpdate(ProviderIdentifier provider, final Song s) throws RemoteException {
if (s == null) {
Log.w(TAG, "Provider " + provider.mName + " sent in a null songUpdate");
return;
}
try {
Song cached = mCache.getSong(s.getRef());
boolean wasLoaded = false;
boolean changed = false;
if (cached == null) {
mCache.putSong(provider, s);
changed = true;
cached = s;
} else {
wasLoaded = cached.isLoaded();
if (s.isLoaded() && !cached.isIdentical(s)) {
cached.setAlbum(s.getAlbum());
cached.setArtist(s.getArtist());
cached.setSourceLogo(s.getLogo());
cached.setDuration(s.getDuration());
cached.setTitle(s.getTitle());
cached.setYear(s.getYear());
cached.setOfflineStatus(s.getOfflineStatus());
cached.setAvailable(s.isAvailable());
cached.setIsLoaded(s.isLoaded());
changed = true;
}
}
if (!wasLoaded && cached.isLoaded()) {
// Match the album with the artist
Artist artist = mCache.getArtist(s.getArtist());
if (artist == null && s.getArtist() != null) {
artist = retrieveArtist(s.getArtist(), provider);
}
if (artist != null) {
Album album = mCache.getAlbum(s.getAlbum());
if (album == null && s.getAlbum() != null) {
album = retrieveAlbum(s.getAlbum(), provider);
}
if (album != null) {
artist.addAlbum(album.getRef());
}
}
}
if (changed) {
postSongForUpdate(cached);
}
} catch (Exception e) {
Log.e(TAG, "Exception while updating song data", e);
}
}
/** Called by the providers when the details of an album have been updated. */
@Override
public void onAlbumUpdate(ProviderIdentifier provider, final Album a) throws RemoteException {
if (a == null) {
Log.w(TAG, "Provider returned a null album");
return;
}
Album cached = mCache.getAlbum(a.getRef());
boolean modified = false;
// See IProviderCallback.aidl in providerlib for more info about the logic of updating
// the Album objects
if (cached == null) {
mCache.putAlbum(provider, a);
cached = a;
modified = true;
} else if (!cached.isLoaded() || !cached.isIdentical(a)) {
cached.setName(a.getName());
cached.setYear(a.getYear());
cached.setIsLoaded(a.isLoaded());
cached.setProvider(a.getProvider());
if (cached.getSongsCount() != a.getSongsCount()) {
Iterator<String> songsIt = a.songs();
while (songsIt.hasNext()) {
String songRef = songsIt.next();
cached.addSong(songRef);
}
}
modified = true;
}
if (cached.getProvider() == null) {
Log.e(TAG, "Provider for " + cached.getRef() + " is null!");
}
if (modified) {
// Add the album to each artist of the song (once)
Iterator<String> songs = a.songs();
while (songs.hasNext()) {
String songRef = songs.next();
Song song = retrieveSong(songRef, a.getProvider());
if (song != null && song.isLoaded()) {
String artistRef = song.getArtist();
if (artistRef != null) {
Artist artist = retrieveArtist(artistRef, song.getProvider());
if (artist != null) {
artist.addAlbum(a.getRef());
} else {
if (DEBUG) Log.e(TAG, "Artist is null!");
}
}
} else {
if (DEBUG) Log.e(TAG, "Song is null!");
}
}
postAlbumForUpdate(cached);
}
}
