From dc973e78560a6514ab172f0ee86dc84a9147d39a Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Sun, 25 Nov 2012 22:53:46 -0800
Subject: schema cache already has the columns as a hash, so use that

---
 .../connection_adapters/abstract/database_statements.rb      |  2 +-
 .../lib/active_record/connection_adapters/schema_cache.rb    | 12 +++++++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb
index 589e91c845..c3d15ca929 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb
@@ -287,7 +287,7 @@ module ActiveRecord
       # Inserts the given fixture into the table. Overridden in adapters that require
       # something beyond a simple insert (eg. Oracle).
       def insert_fixture(fixture, table_name)
-        columns = Hash[schema_cache.columns(table_name).map { |c| [c.name, c] }]
+        columns = schema_cache.columns_hash(table_name)
 
         key_list   = []
         value_list = fixture.map do |name, value|
diff --git a/activerecord/lib/active_record/connection_adapters/schema_cache.rb b/activerecord/lib/active_record/connection_adapters/schema_cache.rb
index c75dbfc082..5839d1d3b4 100644
--- a/activerecord/lib/active_record/connection_adapters/schema_cache.rb
+++ b/activerecord/lib/active_record/connection_adapters/schema_cache.rb
@@ -1,7 +1,7 @@
 module ActiveRecord
   module ConnectionAdapters
     class SchemaCache
-      attr_reader :columns_hash, :primary_keys, :tables, :version
+      attr_reader :primary_keys, :tables, :version
       attr_accessor :connection
 
       def initialize(conn)
@@ -39,6 +39,16 @@ module ActiveRecord
         end
       end
 
+      # Get the columns for a table as a hash, key is the column name
+      # value is the column object.
+      def columns_hash(table = nil)
+        if table
+          @columns_hash[table]
+        else
+          @columns_hash
+        end
+      end
+
       # Clears out internal caches
       def clear!
         @columns.clear
-- 
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