OR nodes are somewhat working

3 files changed, 31 insertions, 12 deletions

diff --git a/lib/arel/nodes/binary.rb b/lib/arel/nodes/binary.rb
new file mode 100644
index 0000000000..44204d91e0
--- /dev/null
+++ b/lib/arel/nodes/binary.rb
@@ -0,0 +1,24 @@
+module Arel
+  module Nodes
+    class Binary
+      attr_accessor :left, :right
+
+      def initialize left, right
+        @left  = left
+        @right = right
+      end
+
+      def or right
+        Nodes::Or.new self, right
+      end
+
+      # FIXME: this method should go away.  I don't like people calling
+      # to_sql on non-head nodes.  This forces us to walk the AST until we
+      # can find a node that has a "relation" member.
+      def to_sql
+        viz = Visitors::ToSql.new left.relation.engine
+        viz.accept self
+      end
+    end
+  end
+end
diff --git a/lib/arel/nodes/equality.rb b/lib/arel/nodes/equality.rb
index d778380054..b8d8281434 100644
--- a/lib/arel/nodes/equality.rb
+++ b/lib/arel/nodes/equality.rb
@@ -1,17 +1,6 @@
 module Arel
   module Nodes
-    class Equality
-      attr_accessor :left, :right
-
-      def initialize left, right
-        @left  = left
-        @right = right
-      end
-
-      def to_sql
-        viz = Visitors::ToSql.new left.relation.engine
-        viz.accept self
-      end
+    class Equality < Arel::Nodes::Binary
     end
   end
 end
diff --git a/lib/arel/nodes/or.rb b/lib/arel/nodes/or.rb
new file mode 100644
index 0000000000..bdf7f6d9b3
--- /dev/null
+++ b/lib/arel/nodes/or.rb
@@ -0,0 +1,6 @@
+module Arel
+  module Nodes
+    class Or < Arel::Nodes::Binary
+    end
+  end
+end