Module: ActiveRecord::ConnectionAdapters::SQLServer::CoreExt::LoaderQuery

Defined in:
lib/active_record/connection_adapters/sqlserver/core_ext/preloader.rb

Instance Method Summary collapse

Instance Method Details

#in_clause_length ⇒ Object 



32
33
34
 
# File 'lib/active_record/connection_adapters/sqlserver/core_ext/preloader.rb', line 32

def in_clause_length
  10_000
end

#load_records_for_keys(keys, &block) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 
# File 'lib/active_record/connection_adapters/sqlserver/core_ext/preloader.rb', line 10

def load_records_for_keys(keys, &block)
  return super unless scope.connection.sqlserver?

  return [] if keys.empty?

  if association_key_name.is_a?(Array)
    query_constraints = Hash.new { |hsh, key| hsh[key] = Set.new }

    keys.each_with_object(query_constraints) do |values_set, constraints|
      association_key_name.zip(values_set).each do |key_name, value|
        constraints[key_name] << value
      end
    end

    scope.where(query_constraints).load(&block)
  else
    keys.each_slice(in_clause_length).flat_map do |slice|
      scope.where(association_key_name => slice).load(&block).records
    end
  end
end