From 5cc9c7e369b13556d15a91a19a027b422a352709 Mon Sep 17 00:00:00 2001
From: kennyj <kennyj@gmail.com>
Date: Tue, 29 May 2012 00:31:24 +0900
Subject: [PATCH] SchemaMigration should be loaded lazily.

---
 activerecord/lib/active_record.rb                                | 1 +
 .../connection_adapters/abstract/schema_statements.rb            | 1 -
 activerecord/lib/active_record/migration.rb                      | 1 -
 3 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/activerecord/lib/active_record.rb b/activerecord/lib/active_record.rb
index 210820062b..f8526bb691 100644
--- a/activerecord/lib/active_record.rb
+++ b/activerecord/lib/active_record.rb
@@ -80,6 +80,7 @@ module ActiveRecord
     autoload :Sanitization
     autoload :Schema
     autoload :SchemaDumper
+    autoload :SchemaMigration
     autoload :Scoping
     autoload :Serialization
     autoload :SessionStore
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
index 62b0f51bb2..5758ac4569 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
@@ -1,5 +1,4 @@
 require 'active_support/deprecation/reporting'
-require 'active_record/schema_migration'
 require 'active_record/migration/join_table'
 
 module ActiveRecord
diff --git a/activerecord/lib/active_record/migration.rb b/activerecord/lib/active_record/migration.rb
index 2a9139749d..ac4f53c774 100644
--- a/activerecord/lib/active_record/migration.rb
+++ b/activerecord/lib/active_record/migration.rb
@@ -1,7 +1,6 @@
 require "active_support/core_ext/module/delegation"
 require "active_support/core_ext/class/attribute_accessors"
 require 'active_support/deprecation'
-require 'active_record/schema_migration'
 require 'set'
 
 module ActiveRecord