[tracker] libtracker-sparql: Print resources referenced in cardinality>1 properties

[Carlos Garnacho <carlosg src gnome org>]

commit e48de2e80c51ac53b0abea4587c887a8b484af78
Author: Carlos Garnacho <carlosg gnome org>
Date:   Thu Jan 5 19:25:03 2017 +0100

    libtracker-sparql: Print resources referenced in cardinality>1 properties
    
    Those were not being printed, just referenced in the parent resource.
    Fixes properties like slo:location being lost on newly indexed photos.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=776723

 src/libtracker-sparql/tracker-resource.c |   26 ++++++++++++++++++++++++++
 1 files changed, 26 insertions(+), 0 deletions(-)
---
diff --git a/src/libtracker-sparql/tracker-resource.c b/src/libtracker-sparql/tracker-resource.c
index f18d001..ebafc13 100644
--- a/src/libtracker-sparql/tracker-resource.c
+++ b/src/libtracker-sparql/tracker-resource.c
@@ -1293,6 +1293,32 @@ generate_sparql_relation_inserts_foreach (gpointer key,
                        generate_sparql_insert_pattern (relation, data);
                        data->done_list = g_list_prepend (data->done_list, relation);
                }
+       } else if (G_VALUE_HOLDS (value, G_TYPE_PTR_ARRAY)) {
+               GPtrArray *array = g_value_get_boxed (value);
+               const GValue *array_value;
+               TrackerResource *relation;
+               gint i;
+
+               for (i = 0; i < array->len; i++) {
+                       array_value = g_ptr_array_index (array, i);
+
+                       if (!G_VALUE_HOLDS (array_value, TRACKER_TYPE_RESOURCE))
+                               continue;
+
+                       relation = g_value_get_object (array_value);
+
+                       /* We don't need to produce inserts for builtin classes */
+                       if (is_builtin_class (tracker_resource_get_identifier (relation),
+                                             data->namespaces))
+                               continue;
+
+                       if (g_list_find_custom (data->done_list, relation,
+                                               (GCompareFunc) tracker_resource_compare) != NULL)
+                               continue;
+
+                       generate_sparql_insert_pattern (relation, data);
+                       data->done_list = g_list_prepend (data->done_list, relation);
+               }
        }
 }