the8472

require "cancan/model_adapters/active_record_adapter"

class CanCan::ModelAdapters::ActiveRecordAdapter

  # disable the error when multiple conditions with scopes are used
  def override_scope
    return false
  end
  
  # convert where-clauses from relations into sql strings which will be merged by the cancan  merge_conditions logic 

the8472

require "cancan/model_adapters/active_record_adapter"

class CanCan::ModelAdapters::ActiveRecordAdapter
  # use squeel's symbol-predicates to convert all joins into outer joins
  # see https://github.com/ryanb/cancan/issues/374
  def clean_joins(joins_hash)
    joins = []
    joins_hash.each do |name, nested|
      name = name.outer if nested.is_a? Hash
      joins << (nested.empty? ? name : {name => clean_joins(nested)})

the8472

require "cancan/model_adapters/active_record_adapter"

class CanCan::ModelAdapters::ActiveRecordAdapter

  def merge_conditions(sql, conditions_hash, behavior)
    conditions_hash = Squeel::Nodes::Literal.new(conditions_hash) if conditions_hash.is_a? String
    if conditions_hash.blank?
      Squeel::Nodes::Literal.new(behavior ? true_sql : false_sql)
    else
      case sql

the8472

require 'active_record'

class ReferencedModelA < ActiveRecord::Base; end
class ReferencedModelB < ActiveRecord::Base; end
class ReferencedModelC < ActiveRecord::Base; end

class ModelA < ActiveRecord::Base
has_many :referenced_model_a
end

the8472

# encoding: UTF-8

require "cancan/model_adapters/active_record_adapter"

class CanCan::Rule
  def unmergeable?
    false
  end
end

the8472

module Mhmr::DescendantsTracker
  def descendants_and_self
    [self].concat self.descendants
  end
end

ActiveSupport::DescendantsTracker.send(:include,Mhmr::DescendantsTracker)


jruby:

the8472

### ruby 1.9.3 + railsexpress patches + GC tuning + -march=native -O3

time ruby script/rails r 'Post.count'

real  0m1.008s
user	0m0.820s
sys	0m0.180s

### jruby 1.7.2-dev 2012-12-12 + java 64bit 1.8.0-ea-b67 hotspot 25.0-b11

the8472

Compiled method (c2)     593    8             Test2::test1 (46 bytes)
 total in heap  [0x029af8c8,0x029b0184] = 2236
 relocation     [0x029af99c,0x029af9b8] = 28
 main code      [0x029af9c0,0x029afd00] = 832
 stub code      [0x029afd00,0x029afd10] = 16
 oops           [0x029afd10,0x029afd14] = 4
 metadata       [0x029afd14,0x029afd18] = 4
 scopes data    [0x029afd18,0x029afddc] = 196
 scopes pcs     [0x029afddc,0x029b013c] = 864
 dependencies   [0x029b013c,0x029b0140] = 4

the8472

import java.lang.reflect.Field;
import java.security.SecureRandom;

import sun.misc.Unsafe;

public class Test2 {
	
	static final Unsafe unsafe;
	static final long offsetA;
	static final long offsetB;

the8472

diff --git a/src/org/jruby/RubyBasicObject.java b/src/org/jruby/RubyBasicObject.java
index 2bb34e8..6de4bef 100644
--- a/src/org/jruby/RubyBasicObject.java
+++ b/src/org/jruby/RubyBasicObject.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
 import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;