[folks] Add uid to PostalAddress to facilitate tracking

[Travis Reitter <treitter src gnome org>]

commit 952c07bb01e57d10a5abf0a482bbd277456e9595
Author: Raul Gutierrez Segales <raul gutierrez segales collabora co uk>
Date:   Fri Mar 4 16:39:45 2011 +0000

    Add uid to PostalAddress to facilitate tracking

 NEWS                            |    1 +
 folks/postal-address-owner.vala |   16 ++++++++++++++--
 2 files changed, 15 insertions(+), 2 deletions(-)
---
diff --git a/NEWS b/NEWS
index 8384415..ac810f8 100644
--- a/NEWS
+++ b/NEWS
@@ -20,6 +20,7 @@ API changes:
 * Add BirthdayOwner interface
 * Add NoteOwner interface
 * Add PostalAddressOwner interface
+* Add PostalAddressOwner.uid as a convenience for backends
 
 Overview of changes from libfolks 0.3.5 to libfolks 0.3.6
 =========================================================
diff --git a/folks/postal-address-owner.vala b/folks/postal-address-owner.vala
index b50b6dc..91198fe 100644
--- a/folks/postal-address-owner.vala
+++ b/folks/postal-address-owner.vala
@@ -16,6 +16,7 @@
  *
  * Authors:
  *       Marco Barisione <marco barisione collabora co uk>
+ *       Raul Gutierrez Segales <raul gutierrez segales collabora co uk>
  */
 
 using GLib;
@@ -145,6 +146,16 @@ public class Folks.PostalAddress : Object
         }
     }
 
+  private string _uid = "";
+  /**
+   * The UID of the Postal Address (if any).
+   */
+  public string uid
+    {
+      get { return _uid; }
+      construct set { _uid = (value != null ? value : ""); }
+    }
+
   /**
    * Create a PostalAddress.
    *
@@ -160,7 +171,7 @@ public class Folks.PostalAddress : Object
    */
   public PostalAddress (string? po_box, string? extension, string? street,
       string? locality, string? region, string? postal_code, string? country,
-      string? address_format, List<string> types)
+      string? address_format, List<string> types, string? uid)
     {
       Object (po_box:         po_box,
               extension:      extension,
@@ -170,7 +181,8 @@ public class Folks.PostalAddress : Object
               postal_code:    postal_code,
               country:        country,
               address_format: address_format,
-              types:          types);
+              types:          types,
+              uid:            uid);
     }
 }