Class: ActiveRecord::ConnectionAdapters::MasterSlaveAdapter::Clock

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/active_record/connection_adapters/master_slave_adapter/clock.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file, position) ⇒ Clock

Returns a new instance of Clock.

Raises:

  • (ArgumentError) 


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# File 'lib/active_record/connection_adapters/master_slave_adapter/clock.rb', line 8

def initialize(file, position)
  raise ArgumentError, "file and postion may not be nil" if file.nil? || position.nil?
  @file, @position = file, position.to_i
end

Instance Attribute Details

#file ⇒ Object (readonly)

Returns the value of attribute file.



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# File 'lib/active_record/connection_adapters/master_slave_adapter/clock.rb', line 6

def file
  @file
end

#position ⇒ Object (readonly)

Returns the value of attribute position.



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# File 'lib/active_record/connection_adapters/master_slave_adapter/clock.rb', line 6

def position
  @position
end

Class Method Details

.infinity ⇒ Object 



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# File 'lib/active_record/connection_adapters/master_slave_adapter/clock.rb', line 29

def self.infinity
  @infinity ||= Clock.new('', Float::MAX.to_i)
end

.parse(string) ⇒ Object 



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# File 'lib/active_record/connection_adapters/master_slave_adapter/clock.rb', line 33

def self.parse(string)
  new(*string.split('@'))
rescue
  nil
end

.zero ⇒ Object 



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# File 'lib/active_record/connection_adapters/master_slave_adapter/clock.rb', line 25

def self.zero
  @zero ||= Clock.new('', 0)
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/active_record/connection_adapters/master_slave_adapter/clock.rb', line 13

def <=>(other)
  @file == other.file ? @position <=> other.position : @file <=> other.file
end

#infinity? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_record/connection_adapters/master_slave_adapter/clock.rb', line 21

def infinity?
  self == self.class.infinity
end

#to_s ⇒ Object 



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# File 'lib/active_record/connection_adapters/master_slave_adapter/clock.rb', line 17

def to_s
  [ @file, @position ].join('@')
end