Make to private the visibility of _quote and _type_cast

activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb

@@ -1,6 +1,7 @@
 require 'active_record/connection_adapters/abstract_adapter'
 require 'active_record/connection_adapters/mysql/column'
 require 'active_record/connection_adapters/mysql/explain_pretty_printer'
+require 'active_record/connection_adapters/mysql/quoting'
 require 'active_record/connection_adapters/mysql/schema_creation'
 require 'active_record/connection_adapters/mysql/schema_definitions'
 require 'active_record/connection_adapters/mysql/schema_dumper'
@@ -11,6 +12,7 @@
 module ActiveRecord
   module ConnectionAdapters
     class AbstractMysqlAdapter < AbstractAdapter
+      include MySQL::Quoting
       include MySQL::ColumnDumper
       include Savepoints
 
@@ -165,14 +167,6 @@ def error_number(exception) # :nodoc:
 
       # QUOTING ==================================================
 
-      def _quote(value) # :nodoc:
-        if value.is_a?(Type::Binary::Data)
-          "x'#{value.hex}'"
-        else
-          super
-        end
-      end
-
       def quote_column_name(name) #:nodoc:
         @quoted_column_names[name] ||= "`#{name.to_s.gsub('`', '``')}`"
       end

activerecord/lib/active_record/connection_adapters/mysql/quoting.rb

@@ -0,0 +1,17 @@
+module ActiveRecord
+  module ConnectionAdapters
+    module MySQL
+      module Quoting # :nodoc:
+        private
+
+        def _quote(value)
+          if value.is_a?(Type::Binary::Data)
+            "x'#{value.hex}'"
+          else
+            super
+          end
+        end
+      end
+    end
+  end
+end

activerecord/lib/active_record/connection_adapters/sqlite3/quoting.rb

@@ -0,0 +1,32 @@
+module ActiveRecord
+  module ConnectionAdapters
+    module SQLite3
+      module Quoting # :nodoc:
+        private
+
+        def _quote(value)
+          if value.is_a?(Type::Binary::Data)
+            "x'#{value.hex}'"
+          else
+            super
+          end
+        end
+
+        def _type_cast(value)
+          case value
+          when BigDecimal
+            value.to_f
+          when String
+            if value.encoding == Encoding::ASCII_8BIT
+              super(value.encode(Encoding::UTF_8))
+            else
+              super
+            end
+          else
+            super
+          end
+        end
+      end
+    end
+  end
+end

activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb

@@ -1,6 +1,7 @@
 require 'active_record/connection_adapters/abstract_adapter'
 require 'active_record/connection_adapters/statement_pool'
 require 'active_record/connection_adapters/sqlite3/explain_pretty_printer'
+require 'active_record/connection_adapters/sqlite3/quoting'
 require 'active_record/connection_adapters/sqlite3/schema_creation'
 
 gem 'sqlite3', '~> 1.3.6'
@@ -49,6 +50,8 @@ module ConnectionAdapters #:nodoc:
     # * <tt>:database</tt> - Path to the database file.
     class SQLite3Adapter < AbstractAdapter
       ADAPTER_NAME = 'SQLite'.freeze
+
+      include SQLite3::Quoting
       include Savepoints
 
       NATIVE_DATABASE_TYPES = {
@@ -176,30 +179,6 @@ def supports_explain?
 
       # QUOTING ==================================================
 
-      def _quote(value) # :nodoc:
-        case value
-        when Type::Binary::Data
-          "x'#{value.hex}'"
-        else
-          super
-        end
-      end
-
-      def _type_cast(value) # :nodoc:
-        case value
-        when BigDecimal
-          value.to_f
-        when String
-          if value.encoding == Encoding::ASCII_8BIT
-            super(value.encode(Encoding::UTF_8))
-          else
-            super
-          end
-        else
-          super
-        end
-      end
-
       def quote_string(s) #:nodoc:
         @connection.class.quote(s)
       end