Rails 6 support

.travis.yml

@@ -15,10 +15,6 @@ script:
   - docker-compose run ci
 matrix:
   include:
-    - name: 2.3.8
-      env: TARGET_VERSION=2.3.8
-    - name: 2.4.10
-      env: TARGET_VERSION=2.4.10
     - name: 2.5.8
       env: TARGET_VERSION=2.5.8
     - name: 2.6.6

Gemfile

@@ -1,8 +1,15 @@
+# frozen_string_literal: true
+
 require 'openssl'
 source 'https://rubygems.org'
+
+git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
 gemspec
 
-gem 'sqlite3', '~> 1.3.6'
+gem "sqlite3", "~> 1.4"
+gem "pg", ">= 0.18.0"
+
 gem 'bcrypt'
 gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 
@@ -13,7 +20,7 @@ end
 if ENV['RAILS_SOURCE']
   gemspec path: ENV['RAILS_SOURCE']
 else
-  # Need to get rails source beacause the gem doesn't include tests
+  # Need to get rails source because the gem doesn't include tests
   version = ENV['RAILS_VERSION'] || begin
     require 'net/http'
     require 'yaml'
@@ -33,7 +40,7 @@ else
       ver
     end
   end
-  gem 'rails', git: "git://github.com/rails/rails.git", tag: "v#{version}"
+  gem 'rails', github: "rails/rails", tag: "v#{version}"
 end
 
 if ENV['AREL']

README.md

@@ -7,15 +7,15 @@
 
 ## About The Adapter
 
-The SQL Server adapter for ActiveRecord v5.2 using SQL Server 2012 or higher.
+The SQL Server adapter for ActiveRecord v6.0 using SQL Server 2012 or higher.
 
-Interested in older versions? We follow a rational versioning policy that tracks Rails. That means that our 5.1.x version of the adapter is only for the latest 5.1 version of Rails. If you need the adapter for SQL Server 2008 or 2005, you are still in the right spot. Just install the latest 3.2.x to 4.1.x version of the adapter that matches your Rails version. We also have stable branches for each major/minor release of ActiveRecord.
+Interested in older versions? We follow a rational versioning policy that tracks Rails. That means that our 5.2.x version of the adapter is only for the latest 5.2 version of Rails. If you need the adapter for SQL Server 2008 or 2005, you are still in the right spot. Just install the latest 3.2.x to 4.1.x version of the adapter that matches your Rails version. We also have stable branches for each major/minor release of ActiveRecord.
 
 #### Native Data Type Support
 
 We support every data type supported by FreeTDS. All simplified Rails types in migrations will coorespond to a matching SQL Server national (unicode) data type. Always check the `initialize_native_database_types` [(here)](https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/blob/master/lib/active_record/connection_adapters/sqlserver/schema_statements.rb) for an updated list.
 
-The following types (date, datetime2, datetimeoffset, time) all require TDS version 7.3 with TinyTDS. We recommend using FreeTDS 1.0 or higher which default to using `TDSVER` to "7.3". The adapter also sets TinyTDS's `tds_version` to this as well if non is specified.
+The following types (`date`, `datetime2`, `datetimeoffset`, `time`) all require TDS version 7.3 with TinyTDS. We recommend using FreeTDS 1.0 or higher which default to using `TDSVER` to "7.3". The adapter also sets TinyTDS's `tds_version` to this as well if non is specified.
 
 The Rails v5 adapter supports ActiveRecord's `datetime_with_precision` setting. This means that passing `:precision` to a datetime column is supported. Using a pecision with the `:datetime` type will signal the adapter to use the `datetime2` type under the hood.
 

VERSION

@@ -1 +1 @@
-5.2.0
+6.0.0.rc1

activerecord-sqlserver-adapter.gemspec

@@ -1,21 +1,32 @@
-# -*- encoding: utf-8 -*-
-$:.push File.expand_path("../lib", __FILE__)
-require "active_record/connection_adapters/sqlserver/version"
+# frozen_string_literal: true
+
+version = File.read(File.expand_path("VERSION", __dir__)).strip
 
 Gem::Specification.new do |spec|
-  spec.name          = 'activerecord-sqlserver-adapter'
-  spec.version       = ActiveRecord::ConnectionAdapters::SQLServer::Version::VERSION
+  spec.name          = "activerecord-sqlserver-adapter"
   spec.platform      = Gem::Platform::RUBY
-  spec.license       = 'MIT'
-  spec.authors       = ['Ken Collins', 'Anna Carey', 'Will Bond', 'Murray Steele', 'Shawn Balestracci', 'Joe Rafaniello', 'Tom Ward']
-  spec.email         = ['ken@metaskills.net', 'will@wbond.net']
-  spec.homepage      = 'http://github.com/rails-sqlserver/activerecord-sqlserver-adapter'
-  spec.summary       = 'ActiveRecord SQL Server Adapter.'
-  spec.description   = 'ActiveRecord SQL Server Adapter. SQL Server 2012 and upward.'
+  spec.version       = version
+
+  spec.required_ruby_version = ">= 2.5.0"
+
+  spec.license       = "MIT"
+  spec.authors       = ["Ken Collins", "Anna Carey", "Will Bond", "Murray Steele", "Shawn Balestracci", "Joe Rafaniello", "Tom Ward"]
+  spec.email         = ["ken@metaskills.net", "will@wbond.net"]
+  spec.homepage      = "http://github.com/rails-sqlserver/activerecord-sqlserver-adapter"
+  spec.summary       = "ActiveRecord SQL Server Adapter."
+  spec.description   = "ActiveRecord SQL Server Adapter. SQL Server 2012 and upward."
+
+  spec.metadata      = {
+    "bug_tracker_uri"   => "https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/issues",
+    "changelog_uri"     => "https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/blob/v#{version}/CHANGELOG.md",
+    "source_code_uri"   => "https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/tree/v#{version}",
+  }
+
   spec.files         = `git ls-files -z`.split("\x0")
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
-  spec.require_paths = ['lib']
-  spec.add_dependency 'activerecord', '~> 5.2.0'
-  spec.add_dependency 'tiny_tds'
+  spec.require_paths = ["lib"]
+
+  spec.add_dependency "activerecord", "~> 6.0.0"
+  spec.add_dependency "tiny_tds"
 end

appveyor.yml

@@ -1,39 +1,42 @@
+image: Visual Studio 2017
+skip_tags: true
+clone_depth: 5
+build: off
+matrix:
+  fast_finish: true
+
+services:
+  - mssql2014
+
 init:
   - SET PATH=C:\Ruby%ruby_version%\bin;%PATH%
   - SET PATH=C:\MinGW\msys\1.0\bin;%PATH%
   - SET RAKEOPT=-rdevkit
-  - SET TINYTDS_VERSION=2.1.0
-clone_depth: 5
-skip_tags: true
-matrix:
-  fast_finish: true
+  - SET TINYTDS_VERSION=2.1.3.pre
+
 install:
   - ps: Update-AppveyorBuild -Version "$(Get-Content $env:appveyor_build_folder\VERSION).$env:appveyor_build_number"
   - ruby --version
   - gem --version
   - bundle install
   - gem uninstall bcrypt
   - gem install bcrypt --platform=ruby
-build: off
+
 test_script:
   - powershell -File "%APPVEYOR_BUILD_FOLDER%\test\appveyor\dbsetup.ps1"
   - timeout /t 4 /nobreak > NUL
-  - ps: Start-Service 'MSSQL$SQL2014'
-  - timeout /t 4 /nobreak > NUL
   - sqlcmd -S ".\SQL2014" -U sa -P Password12! -i %APPVEYOR_BUILD_FOLDER%\test\appveyor\dbsetup.sql
   - bundle exec rake test ACTIVERECORD_UNITTEST_DATASERVER="localhost\SQL2014"
-  - ps: Stop-Service 'MSSQL$SQL2014'
-  - ps: Start-Service 'MSSQL$SQL2012SP1'
-  - timeout /t 4 /nobreak > NUL
-  - sqlcmd -S ".\SQL2012SP1" -U sa -P Password12! -i %APPVEYOR_BUILD_FOLDER%\test\appveyor\dbsetup.sql
-  - bundle exec rake test ACTIVERECORD_UNITTEST_DATASERVER="localhost\SQL2012SP1"
+
 environment:
   CI_AZURE_HOST:
     secure: VChrioaIWkf9iuuaSs4cryiA4honrADgZqNC0++begg=
   CI_AZURE_PASS:
     secure: cSQp8sk4urJYvq0utpsK+r7J+snJ2wpcdp8RdXJfB+w=
   matrix:
-    - ruby_version: "23-x64"
-    - ruby_version: "23"
-    - ruby_version: "22-x64"
-    - ruby_version: "22"
+    - ruby_version: "25-x64"
+    - ruby_version: "25"
+    - ruby_version: "26-x64"
+    - ruby_version: "26"
+    - ruby_version: "27-x64"
+    - ruby_version: "27"

lib/active_record/connection_adapters/sqlserver/core_ext/finder_methods.rb

@@ -11,13 +11,13 @@ module FinderMethods
 
           # Same as original except we order by values in distinct select if present.
           def construct_relation_for_exists(conditions)
-            if distinct_value && offset_value
-              relation = limit!(1)
+            conditions = sanitize_forbidden_attributes(conditions)
 
+            if distinct_value && offset_value
               if select_values.present?
-                relation = relation.order(*select_values)
+                relation = order(*select_values).limit!(1)
               else
-                relation = relation.except(:order)
+                relation = except(:order).limit!(1)
               end
             else
               relation = except(:select, :distinct, :order)._select!(::ActiveRecord::FinderMethods::ONE_AS_ONE).limit!(1)

lib/active_record/connection_adapters/sqlserver/core_ext/preloader.rb

@@ -0,0 +1,34 @@
+require "active_record/associations/preloader"
+
+module ActiveRecord
+  module ConnectionAdapters
+    module SQLServer
+      module CoreExt
+        module Preloader
+          private
+
+          def records_for(ids)
+            ids.each_slice(in_clause_length).flat_map do |slice|
+              scope.where(association_key_name => slice).load do |record|
+                # Processing only the first owner
+                # because the record is modified but not an owner
+                owner = owners_by_key[convert_key(record[association_key_name])].first
+                association = owner.association(reflection.name)
+                association.set_inverse_instance(record)
+              end.records
+            end
+          end
+
+          def in_clause_length
+            10_000
+          end
+        end
+      end
+    end
+  end
+end
+
+ActiveSupport.on_load(:active_record) do
+  mod = ActiveRecord::ConnectionAdapters::SQLServer::CoreExt::Preloader
+  ActiveRecord::Associations::Preloader::Association.prepend(mod)
+end

lib/active_record/connection_adapters/sqlserver/core_ext/query_methods.rb

@@ -9,7 +9,8 @@ module QueryMethods
 
           private
 
-          # Copy of original from Rails master. This patch can be removed when adapter supports Rails 6.
+          # Copy of original from Rails master.
+          # This patch can be removed when adapter supports Rails version greater than 6.0.2.2
           def table_name_matches?(from)
             table_name = Regexp.escape(table.name)
             quoted_table_name = Regexp.escape(connection.quote_table_name(table.name))

lib/active_record/connection_adapters/sqlserver/database_limits.rb

@@ -9,10 +9,12 @@ def table_alias_length
         def column_name_length
           128
         end
+        deprecate :column_name_length
 
         def table_name_length
           128
         end
+        deprecate :table_name_length
 
         def index_name_length
           128
@@ -21,14 +23,17 @@ def index_name_length
         def columns_per_table
           1024
         end
+        deprecate :columns_per_table
 
         def indexes_per_table
           999
         end
+        deprecate :indexes_per_table
 
         def columns_per_multicolumn_index
           16
         end
+        deprecate :columns_per_multicolumn_index
 
         def in_clause_length
           10_000
@@ -37,10 +42,12 @@ def in_clause_length
         def sql_query_length
           65_536 * 4_096
         end
+        deprecate :sql_query_length
 
         def joins_per_query
           256
         end
+        deprecate :joins_per_query
 
         private