1 files changed, 18 insertions, 0 deletions
diff --git a/lib/arel/algebra/relations/operations/order.rb b/lib/arel/algebra/relations/operations/order.rb
new file mode 100644
index 0000000000..a589b56997
--- /dev/null
+++ b/lib/arel/algebra/relations/operations/order.rb
@@ -0,0 +1,18 @@
+module Arel
+  class Order < Compound
+    attributes :relation, :orderings
+    deriving :==
+
+    def initialize(relation, *orderings, &block)
+      @relation = relation
+      @orderings = (orderings + arguments_from_block(relation, &block)) \
+        .collect { |o| o.bind(relation) }
+    end
+
+    # TESTME
+    def orders
+      # QUESTION - do we still need relation.orders ?
+      (orderings + relation.orders).collect { |o| o.bind(self) }.collect { |o| o.to_ordering }
+    end
+  end
+end