[rygel] tracker: Correct search (for @id) logic

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit e91772b6ecf59ffffce8741dfd5116b2944ed151
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Dec 2 16:31:48 2009 +0200

    tracker: Correct search (for @id) logic
    
    If a child item is being search for, the sparql query generated for it
    must contain a filter to make the query specific for the requested item.

 .../tracker/rygel-tracker-search-container.vala    |   14 +++++++-------
 1 files changed, 7 insertions(+), 7 deletions(-)
---
diff --git a/src/plugins/tracker/rygel-tracker-search-container.vala b/src/plugins/tracker/rygel-tracker-search-container.vala
index 57cac9c..fd7b9b0 100644
--- a/src/plugins/tracker/rygel-tracker-search-container.vala
+++ b/src/plugins/tracker/rygel-tracker-search-container.vala
@@ -186,20 +186,20 @@ public class Rygel.TrackerSearchContainer : Rygel.MediaContainer {
         }
 
         var rel_expression = expression as RelationalExpression;
-        string filter = null;
+        var query = new TrackerQuery.clone (this.query);
 
         if (rel_expression.operand1 == "@id") {
-            filter = create_filter_for_id (rel_expression);
+            var filter = create_filter_for_id (rel_expression);
+            if (filter != null) {
+                query.filters.add (filter);
+            } else {
+                return null;
+            }
         } else if (rel_expression.operand1 == "@parentID" &&
                    !rel_expression.compare_string (this.id)) {
             return null;
         }
 
-        var query = new TrackerQuery.clone (this.query);
-        if (filter != null) {
-            query.filters.add (filter);
-        }
-
         query.offset = offset;
         query.max_count = max_count;