# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 12
        def dirties_query_cache(base, *method_names)
          method_names.each do |method_name|
            base.class_eval "              def #{method_name}(*)
                clear_query_cache if @query_cache_enabled
                super
              end
", __FILE__, __LINE__ + 1
          end
        end

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 47
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 54
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 85
def clear_query_cache
  @lock.synchronize do
    @query_cache.clear
  end
end

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 66
def disable_query_cache!
  @query_cache_enabled = false
  clear_query_cache
end

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 62
def enable_query_cache!
  @query_cache_enabled = true
end

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 91
def select_all(arel, name = nil, binds = [], preparable: nil)
  if @query_cache_enabled && !locked?(arel)
    arel, binds = binds_from_relation arel, binds
    sql = to_sql(arel, binds)
    cache_sql(sql, name, binds) { super(sql, name, binds, preparable: preparable) }
  else
    super
  end
end

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 72
def uncached
  old, @query_cache_enabled = @query_cache_enabled, false
  yield
ensure
  @query_cache_enabled = old
end