Class: ActiveRecord::Bulkoperation::Util::SequenceCache

Inherits:

Object

• Object
• ActiveRecord::Bulkoperation::Util::SequenceCache

Defined in:

lib/activerecord_bulkoperation/util/sequence_cache.rb

Instance Method Summary

• #initialize(seq, prefetch = 10) ⇒ SequenceCache constructor

  seq - the sequence name to use with the SequenceCache object refetch - how many values should be fetch from the database with each roundtrip.

• #next_value ⇒ Object

  return - the next value from the sequence.

Constructor Details

#initialize(seq, prefetch = 10) ⇒ SequenceCache

seq - the sequence name to use with the SequenceCache object refetch - how many values should be fetch from the database with each roundtrip

# File 'lib/activerecord_bulkoperation/util/sequence_cache.rb', line 17

def initialize(seq, prefetch = 10)          
  @seq, @prefetch = seq, prefetch
  @queue = Queue.new
end

Instance Method Details

#next_value ⇒ Object

return - the next value from the sequence

# File 'lib/activerecord_bulkoperation/util/sequence_cache.rb', line 24

def next_value          
  while ( value = next_value_from_queue ).nil?
    fill_queue
  end
  value 
end