1 files changed, 6 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb
index d90b9283ef..e09319890a 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb
@@ -84,7 +84,7 @@ module ActiveRecord
             @subtype = subtype
           end
 
-          def exctract_bounds(value)
+          def extract_bounds(value)
             from, to = value[1..-2].split(',')
             {
               from:          (value[1] == ',' || from == '-infinity') ? infinity(:negative => true) : from,
@@ -110,7 +110,7 @@ module ActiveRecord
             return if value.nil? || value == 'empty'
             return value if value.is_a?(::Range)
 
-            extracted = exctract_bounds(value)
+            extracted = extract_bounds(value)
 
             case @subtype
             when :date
@@ -239,6 +239,10 @@ module ActiveRecord
             @mapping[oid]
           end
 
+          def clear
+            @mapping.clear
+          end
+
           def key?(oid)
             @mapping.key? oid
           end