1 files changed, 24 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/associations/join_dependency/join_base.rb b/activerecord/lib/active_record/associations/join_dependency/join_base.rb
new file mode 100644
index 0000000000..3920e84976
--- /dev/null
+++ b/activerecord/lib/active_record/associations/join_dependency/join_base.rb
@@ -0,0 +1,24 @@
+module ActiveRecord
+  module Associations
+    class JoinDependency # :nodoc:
+      class JoinBase < JoinPart # :nodoc:
+        def ==(other)
+          other.class == self.class &&
+            other.active_record == active_record
+        end
+
+        def aliased_prefix
+          "t0"
+        end
+
+        def table
+          Arel::Table.new(table_name, arel_engine)
+        end
+
+        def aliased_table_name
+          active_record.table_name
+        end
+      end
+    end
+  end
+end