[tracker] tracker-extract-gstreamer: Set nmm:albumArtist to nmm:MusicAlbum

[Carlos Garnacho <carlosg src gnome org>]

commit a2c479f5eb7192cbe166ff0233f4d93407daa2f3
Author: Carlos Garnacho <carlosg gnome org>
Date:   Thu May 13 11:37:40 2010 +0200

    tracker-extract-gstreamer: Set nmm:albumArtist to nmm:MusicAlbum

 src/tracker-extract/tracker-extract-gstreamer.c |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/src/tracker-extract/tracker-extract-gstreamer.c b/src/tracker-extract/tracker-extract-gstreamer.c
index fe69236..6c3af75 100644
--- a/src/tracker-extract/tracker-extract-gstreamer.c
+++ b/src/tracker-extract/tracker-extract-gstreamer.c
@@ -499,6 +499,7 @@ extract_metadata (MetadataExtractor      *extractor,
 	g_return_if_fail (metadata != NULL);
 
 	if (extractor->tagcache) {
+		gchar *artist_uri = NULL;
 		gchar *performer_uri = NULL;
 		gchar *composer_uri = NULL;
 		gchar *album_uri = NULL;
@@ -527,6 +528,18 @@ extract_metadata (MetadataExtractor      *extractor,
 			gst_tag_list_get_string (extractor->tagcache, GST_TAG_PERFORMER, &performer);
 			gst_tag_list_get_string (extractor->tagcache, GST_TAG_ARTIST, &artist_local);
 
+			if (artist_local) {
+				artist_uri = tracker_uri_printf_escaped ("urn:artist:%s", artist_local);
+
+				tracker_sparql_builder_insert_open (preupdate, NULL);
+				tracker_sparql_builder_subject_iri (preupdate, artist_uri);
+				tracker_sparql_builder_predicate (preupdate, "a");
+				tracker_sparql_builder_object (preupdate, "nmm:Artist");
+				tracker_sparql_builder_predicate (preupdate, "nmm:artistName");
+				tracker_sparql_builder_object_unvalidated (preupdate, artist_local);
+				tracker_sparql_builder_insert_close (preupdate);
+			}
+
 			temp = tracker_coalesce_strip (2, performer, artist_local);
 
 			if (temp) {
@@ -588,6 +601,11 @@ extract_metadata (MetadataExtractor      *extractor,
 			tracker_sparql_builder_predicate (preupdate, "nmm:albumTitle");
 			tracker_sparql_builder_object_unvalidated (preupdate, s);
 
+			if (artist_uri) {
+				tracker_sparql_builder_predicate (preupdate, "nmm:albumArtist");
+				tracker_sparql_builder_object_iri (preupdate, artist_uri);
+			}
+
 			tracker_sparql_builder_insert_close (preupdate);
 
 			has_it = gst_tag_list_get_uint (extractor->tagcache,