[rygel] core: SimpleContainer implements find_object()

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 93efe9fafe9a1b733b1997d965b5c58f1991f72a
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Thu Aug 12 17:12:24 2010 +0300

    core: SimpleContainer implements find_object()
    
    The default find_object() implementation in base MediaContainer translates
    find_object() to a search() query and since search() is recursive, the
    whole tree under the container then gets a search() called on them so if
    any of them has implemented find_object(), that implementation will never
    be actually used. This is exactly what was happening in case of tracker
    plugin and that was the main reason for it being so extremely slow in the
    past few months.
    
    Since most containers are SimpleContainer, this solves the problem for most
    (if not all) of the plugins.

 src/rygel/rygel-simple-container.vala |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)
---
diff --git a/src/rygel/rygel-simple-container.vala b/src/rygel/rygel-simple-container.vala
index 0a7875c..18f0542 100644
--- a/src/rygel/rygel-simple-container.vala
+++ b/src/rygel/rygel-simple-container.vala
@@ -71,4 +71,27 @@ public class Rygel.SimpleContainer : Rygel.MediaContainer {
 
         return this.children.slice ((int) offset, (int) stop) as MediaObjects;
     }
+
+    public override async MediaObject? find_object (string       id,
+                                                    Cancellable? cancellable)
+                                                    throws Error {
+        MediaObject media_object = null;
+
+        foreach (var child in this.children) {
+            if (child.id == id) {
+                media_object = child;
+
+                break;
+            } else if (child is MediaContainer) {
+                var container = child as MediaContainer;
+
+                media_object = yield container.find_object (id, cancellable);
+                if (media_object != null) {
+                    break;
+                }
+            }
+        }
+
+        return media_object;
+    }
 }