[gnome-music] query: Order special playlist on top

[Marinus Schraal <mschraal src gnome org>]

commit 132d30684bc299cabf35faccc417dc1cc7875b85
Author: Marinus Schraal <mschraal src gnome org>
Date:   Thu Feb 4 14:09:54 2016 +0100

    query: Order special playlist on top
    
    Use the fact that the auto-generated playlists are tagged to sort them
    on top of the list.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=761502

 gnomemusic/query.py |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gnomemusic/query.py b/gnomemusic/query.py
index 28db88a..ba7bc52 100644
--- a/gnomemusic/query.py
+++ b/gnomemusic/query.py
@@ -238,8 +238,9 @@ class Query():
                        tracker:available ?available . }
             FILTER ( (STRSTARTS(?url, '%(music_dir)s/') && ?available)
                       || !BOUND(nfo:belongsToContainer(?playlist)) )
+            OPTIONAL { ?playlist nao:hasTag ?tag }
         }
-    ORDER BY LCASE(?title)
+    ORDER BY !BOUND(?tag) LCASE(?title)
     '''.replace('\n', ' ').strip() % {
             'where_clause': where_clause.replace('\n', ' ').strip(),
             'music_dir': Query.MUSIC_URI