Cache full MySQL version in schema cache

  * The database version is cached in all the adapters, but this didn't include
    the full MySQL version. Anything that uses the full MySQL version would need
    to query the database to get that data even if they're using the schema
    cache.
  * Now the full MySQL version will be cached in the schema cache via the
    Version object.

1 files changed, 6 insertions, 2 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb b/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb
index 0dc880c731..2ff411a058 100644
--- a/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb
@@ -125,8 +125,12 @@ module ActiveRecord
           super
         end
 
-        def full_version
-          @full_version ||= @connection.server_info[:version]
+        def full_version # :nodoc:
+          schema_cache.database_version.full_version_string
+        end
+
+        def get_full_version # :nodoc:
+          @connection.server_info[:version]
         end
     end
   end