[tracker: 3/4] tracker-miner-fs: Delete nie:dataSources on update

[Carlos Garnacho <carlosg src gnome org>]

commit edf079498680f25096de3f90c3cd062c276e7c31
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun Dec 7 21:34:46 2014 +0100

    tracker-miner-fs: Delete nie:dataSources on update
    
    Decorators should be updating again all relevant information, so ensure
    their nie:dataSource is deleted for these to kick in again.
    
    This used to be unnecessary because updated items just went to the
    internal decorator queue, without further checks. Now that the decorators
    query the database for the next items missing that dataSource, it is
    crucial to do this somewhere.

 src/miners/fs/tracker-miner-files.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/src/miners/fs/tracker-miner-files.c b/src/miners/fs/tracker-miner-files.c
index 246e7db..fb7445f 100644
--- a/src/miners/fs/tracker-miner-files.c
+++ b/src/miners/fs/tracker-miner-files.c
@@ -2322,6 +2322,18 @@ process_file_attributes_cb (GObject      *object,
        tracker_sparql_builder_graph_close (sparql);
        tracker_sparql_builder_insert_close (sparql);
 
+       /* Delete data sources from other miners/decorators */
+       tracker_sparql_builder_delete_open (sparql, NULL);
+       tracker_sparql_builder_subject_iri (sparql, urn);
+       tracker_sparql_builder_predicate (sparql, "nie:dataSource");
+       tracker_sparql_builder_object_variable (sparql, "datasource");
+       tracker_sparql_builder_delete_close (sparql);
+       tracker_sparql_builder_where_open (sparql);
+       tracker_sparql_builder_subject_iri (sparql, urn);
+       tracker_sparql_builder_predicate (sparql, "nie:dataSource");
+       tracker_sparql_builder_object_variable (sparql, "datasource");
+       tracker_sparql_builder_where_close (sparql);
+
        g_object_unref (file_info);
        g_free (uri);