[gnome-music/wip/carlosg/tracker3: 31/55] grltrackerwrapper: Retrieve creation year for songs

[Marinus Schraal <mschraal src gnome org>]

commit 8461668b063ae75db68427306fb2f2e776935a5f
Author: Sumaid Syed <sumaidsyed gmail com>
Date:   Wed Jul 29 12:03:58 2020 +0200

    grltrackerwrapper: Retrieve creation year for songs
    
    Based on the patches by Jean Felder.
    
    https://gitlab.gnome.org/GNOME/gnome-music/issues/293

 gnomemusic/grilowrappers/grltrackerwrapper.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/gnomemusic/grilowrappers/grltrackerwrapper.py b/gnomemusic/grilowrappers/grltrackerwrapper.py
index 5788da44..d7859354 100644
--- a/gnomemusic/grilowrappers/grltrackerwrapper.py
+++ b/gnomemusic/grilowrappers/grltrackerwrapper.py
@@ -337,7 +337,7 @@ class GrlTrackerWrapper(GObject.GObject):
             ?type ?urn ?title ?id ?url
             ?artist ?album
             ?duration ?trackNumber
-            ?albumDiscNumber
+            ?albumDiscNumber ?creationDate
             nie:usageCounter(?urn) AS ?playCount
             ?tag AS ?favorite
         WHERE {
@@ -355,8 +355,10 @@ class GrlTrackerWrapper(GObject.GObject):
                         nmm:trackNumber(?song) AS ?trackNumber
                         nmm:setNumber(nmm:musicAlbumDisc(?song))
                             AS ?albumDiscNumber
+                        YEAR(?date) AS ?creationDate
                     WHERE {
                         ?song a nmm:MusicPiece .
+                        OPTIONAL { ?song nie:contentCreated ?date . }
                         FILTER ( ?song in ( %(media_ids)s ) )
                         %(location_filter)s
                     }
@@ -442,7 +444,7 @@ class GrlTrackerWrapper(GObject.GObject):
             ?type ?urn ?title ?id ?url
             ?artist ?album
             ?duration ?trackNumber
-            ?albumDiscNumber
+            ?albumDiscNumber ?creationDate
             nie:usageCounter(?urn) AS ?playCount
             ?tag AS ?favorite
         WHERE {
@@ -460,8 +462,10 @@ class GrlTrackerWrapper(GObject.GObject):
                         nmm:trackNumber(?song) AS ?trackNumber
                         nmm:setNumber(nmm:musicAlbumDisc(?song))
                             AS ?albumDiscNumber
+                        YEAR(?date) AS ?creationDate
                     WHERE {
                         ?song a nmm:MusicPiece .
+                        OPTIONAL { ?song nie:contentCreated ?date . }
                         %(location_filter)s
                     }
                     ORDER BY ?title