From 84e8875c559dd63f69bad536a660dfe2666cf289 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Fri, 10 Sep 2010 21:40:59 -0700
Subject: implementing locked

---
 lib/arel/select_manager.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/arel/select_manager.rb b/lib/arel/select_manager.rb
index ce74daab82..c62101077a 100644
--- a/lib/arel/select_manager.rb
+++ b/lib/arel/select_manager.rb
@@ -30,6 +30,10 @@ module Arel
       self
     end
 
+    def locked
+      @head.lock
+    end
+
     def on *exprs
       @ctx.froms.last.constraint = Nodes::On.new(collapse(exprs))
       self
-- 
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