4 files changed, 14 insertions, 2 deletions
diff --git a/lib/arel/extensions/object.rb b/lib/arel/extensions/object.rb
index 0382ca8027..9b66fcac4e 100644
--- a/lib/arel/extensions/object.rb
+++ b/lib/arel/extensions/object.rb
@@ -3,6 +3,10 @@ class Object
     Arel::Value.new(self, relation)
   end
   
+  def circle(relation)
+    bind(relation)
+  end
+  
   def to_sql(formatter)
     formatter.scalar self
   end
diff --git a/lib/arel/predicates.rb b/lib/arel/predicates.rb
index 3d01d5872f..48283e5d09 100644
--- a/lib/arel/predicates.rb
+++ b/lib/arel/predicates.rb
@@ -17,7 +17,7 @@ module Arel
     end
     
     def bind(relation)
-      self.class.new(relation[operand1] || operand1, relation[operand2] || operand2)
+      self.class.new(operand1.circle(relation), operand2.circle(relation))
     end
     
     def to_sql(formatter = nil)
diff --git a/lib/arel/primitives/attribute.rb b/lib/arel/primitives/attribute.rb
index cb564c1587..eeea495b09 100644
--- a/lib/arel/primitives/attribute.rb
+++ b/lib/arel/primitives/attribute.rb
@@ -38,12 +38,16 @@ module Arel
     end
 
     def original_relation
-      original_attribute.relation
+      @original_relation ||= original_attribute.relation
     end
     
     def original_attribute
       @original_attribute ||= history.detect { |a| !a.join? }
     end
+    
+    def circle(relation)
+      relation[self]
+    end
 
     module Transformations      
       def self.included(klass)
diff --git a/lib/arel/primitives/value.rb b/lib/arel/primitives/value.rb
index b4bddd0b0c..7751390be6 100644
--- a/lib/arel/primitives/value.rb
+++ b/lib/arel/primitives/value.rb
@@ -24,5 +24,9 @@ module Arel
     def bind(relation)
       Value.new(value, relation)
     end
+    
+    def circle(relation)
+      bind(relation)
+    end
   end
 end
 \ No newline at end of file