1 files changed, 19 insertions, 0 deletions
diff --git a/lib/active_relation/relations/projection.rb b/lib/active_relation/relations/projection.rb
new file mode 100644
index 0000000000..b30c76898d
--- /dev/null
+++ b/lib/active_relation/relations/projection.rb
@@ -0,0 +1,19 @@
+module ActiveRelation
+  module Relations
+    class Projection < Compound
+      attr_reader :relation, :attributes
+  
+      def initialize(relation, *attributes)
+        @relation, @attributes = relation, attributes
+      end
+  
+      def ==(other)
+        relation == other.relation and attributes.eql?(other.attributes)
+      end
+  
+      def qualify
+        Projection.new(relation.qualify, *attributes.collect(&:qualify))
+      end
+    end
+  end
+end
+\ No newline at end of file