/**
* Build an advanced {@link SelectionBuilder} to match the requested {@link Uri}. This is usually
* only used by {@link #query}, since it performs table joins useful for {@link Cursor} data.
*/
private SelectionBuilder buildExpandedSelection(Uri uri, int match) {
final SelectionBuilder builder = new SelectionBuilder();
switch (match) {
case ALBUMS:
{
return builder.table(Tables.ALBUMS_JOIN_ARTISTS);
}
case ALBUMS_ID:
{
final String albumId = Albums.getAlbumId(uri);
return builder.table(Tables.ALBUMS).where(Albums.ID + "=?", albumId);
}
case ARTISTS:
{
return builder
.table(Tables.ARTISTS)
.map(Artists.ALBUMS_COUNT, Subquery.ARTIST_ALBUMS_COUNT);
}
case ARTISTS_ID_ALBUMS:
{
final String artistId = Artists.getArtistId(uri);
return builder.table(Tables.ALBUMS).where(Artists.ID + "=?", artistId);
}
default:
{
throw new UnsupportedOperationException("Unknown uri: " + uri);
}
}
}
/**
* Build a simple {@link SelectionBuilder} to match the requested {@link Uri}. This is usually
* enough to support {@link #insert}, {@link #update}, and {@link #delete} operations.
*/
private SelectionBuilder buildSimpleSelection(Uri uri) {
final SelectionBuilder builder = new SelectionBuilder();
final int match = sUriMatcher.match(uri);
switch (match) {
case ALBUMS:
{
return builder.table(Tables.ALBUMS);
}
case ALBUMS_ID:
{
final String albumId = Albums.getAlbumId(uri);
return builder.table(Tables.ALBUMS).where(Albums.ID + "=?", albumId);
}
case ARTISTS:
{
return builder.table(Tables.ARTISTS);
}
case ARTISTS_ID:
{
final String artistId = Artists.getArtistId(uri);
return builder.table(Tables.ARTISTS).where(Artists.ID + "=?", artistId);
}
default:
{
throw new UnsupportedOperationException("Unknown uri: " + uri);
}
}
}