# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 17
        def dirties_query_cache(base, *method_names)
          method_names.each do |method_name|
            base.class_eval <<-end_code, __FILE__, __LINE__ + 1
              def #{method_name}(*)
                ActiveRecord::Base.clear_query_caches_for_current_thread
                super
              end
            end_code
          end
        end

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 52
def initialize(*)
  super
  @query_cache         = Hash.new { |h, sql| h[sql] = {} }
  @query_cache_enabled = false
end

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 59
def cache
  old, @query_cache_enabled = @query_cache_enabled, true
  yield
ensure
  @query_cache_enabled = old
  clear_query_cache unless @query_cache_enabled
end

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 90
def clear_query_cache
  @lock.synchronize do
    @query_cache.clear
  end
end

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 71
def disable_query_cache!
  @query_cache_enabled = false
  clear_query_cache
end

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 67
def enable_query_cache!
  @query_cache_enabled = true
end

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 96
def select_all(arel, name = nil, binds = [], preparable: nil, async: false)
  arel = arel_from_relation(arel)

  # If arel is locked this is a SELECT ... FOR UPDATE or somesuch.
  # Such queries should not be cached.
  if @query_cache_enabled && !(arel.respond_to?(:locked) && arel.locked)
    sql, binds, preparable = to_sql_and_binds(arel, binds, preparable)

    if async
      lookup_sql_cache(sql, name, binds) || super(sql, name, binds, preparable: preparable, async: async)
    else
      cache_sql(sql, name, binds) { super(sql, name, binds, preparable: preparable, async: async) }
    end
  else
    super
  end
end

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 77
def uncached
  old, @query_cache_enabled = @query_cache_enabled, false
  yield
ensure
  @query_cache_enabled = old
end