Add [timestamp] data type support as a binary value. Allow migrations to use :ss_timestamp for a real SQL Server binary timestamp column.

Author: metaskills

README.rdoc

@@ -6,7 +6,8 @@ The SQL Server adapter for ActiveRecord.
 
 == What's New
 
-* Version 3.x now supports rails 3!
+* New dblib connection mode using TinyTds!
+* Rails 3 support!
 
 
 ==== Testing Rake Tasks Support

lib/active_record/connection_adapters/sqlserver/schema_statements.rb

@@ -168,7 +168,8 @@ def initialize_native_database_types
             :nchar        => { :name => "nchar" },
             :nvarchar     => { :name => "nvarchar", :limit => 255 },
             :nvarchar_max => { :name => "nvarchar(max)" },
-            :ntext        => { :name => "ntext" }
+            :ntext        => { :name => "ntext" },
+            :ss_timestamp => { :name => 'timestamp' }
           })
         end
 

lib/active_record/connection_adapters/sqlserver_adapter.rb

@@ -87,8 +87,6 @@ def binary_to_string(value)
       def type_cast(value)
         if value && type == :string && is_utf8?
           self.class.string_to_utf8_encoding(value)
-        elsif value && type == :timestamp
-          "0x#{value}"
         else
           super
         end
@@ -158,6 +156,7 @@ def simplified_type(field_type)
           when /uniqueidentifier/i  then :string
           when /datetime/i          then simplified_datetime
           when /varchar\(max\)/     then :text
+          when /timestamp/          then :binary
           else super
         end
       end

test/cases/column_test_sqlserver.rb

@@ -149,6 +149,8 @@ def setup
       @time = SqlServerChronic.columns_hash['time']
       @datetime = SqlServerChronic.columns_hash['datetime']
       @smalldatetime = SqlServerChronic.columns_hash['smalldatetime']
+      @timestamp = SqlServerChronic.columns_hash['timestamp']
+      @ss_timestamp = SqlServerChronic.columns_hash['ss_timestamp']
     end
 
     should 'have correct simplified type for uncast datetime' do
@@ -172,6 +174,25 @@ def setup
       assert_equal nil, @datetime.limit
     end
 
+    context 'with timestamps' do
+
+      should 'use datetime sql type when using :timestamp in schema statements' do
+        assert_equal :datetime, @timestamp.type
+        assert_equal 'datetime', @timestamp.sql_type
+      end
+      
+      should 'be able to use real sql server timestamp if you really want to' do
+        assert_equal :binary, @ss_timestamp.type
+        assert_equal 'timestamp', @ss_timestamp.sql_type
+      end
+      
+      should 'return :timestamp as a binaryish string' do
+        chronic = SqlServerChronic.create!.reload
+        assert_match %r|\000|, chronic.ss_timestamp
+      end
+
+    end
+    
     context 'For smalldatetime types' do
 
       should 'have created that type using rails migrations' do

test/schema/sqlserver_specific_schema.rb

@@ -25,6 +25,7 @@
     t.column :time,       :time
     t.column :datetime,   :datetime
     t.column :timestamp,  :timestamp
+    t.column :ss_timestamp, :ss_timestamp
     t.column :smalldatetime, :smalldatetime
   end