Class: RubyOnAcid::InputFactory

Inherits:
Factory
  • Object
show all
Defined in:
lib/rubyonacid/factories/input.rb

Overview

Allows values to be assigned from an external source.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Factory

#boolean, #choose, #get, #within

Constructor Details

#initialize ⇒ InputFactory

Returns a new instance of InputFactory.



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# File 'lib/rubyonacid/factories/input.rb', line 11

def initialize
  super
  @input_values = {}
  @key_assignments = {}
  @largest_seen_values = {}
  @smallest_seen_values = {}
end

Instance Attribute Details

#default_factory ⇒ Object

A factory to pull values from in the event no values are stored for a given key.



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# File 'lib/rubyonacid/factories/input.rb', line 9

def default_factory
  @default_factory
end

Instance Method Details

#clear_assigned_keys ⇒ Object

Clear all value queue key assignments.



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# File 'lib/rubyonacid/factories/input.rb', line 50

def clear_assigned_keys
  @assigned_keys = {}
end

#clear_input_values ⇒ Object

Clears all stored input values for all keys.



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# File 'lib/rubyonacid/factories/input.rb', line 45

def clear_input_values
  @input_values = {}
end

#get_unit(key) ⇒ Object

Retrieves the next stored value for the given key. The key that values are pulled from will not necessarily be the same as that passed to put() - value queue keys are assigned to get_unit() keys at random.



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# File 'lib/rubyonacid/factories/input.rb', line 21

def get_unit(key)
  current_key = assigned_key(key)
  if @input_values[current_key] and @input_values[current_key].length > 0
    return scale(current_key, @input_values[current_key].shift) || default_value(key)
  else
    return default_value(key)
  end
end

#put(key, value) ⇒ Object

Store a value for the given key. Values will be scaled to the range 0 to 1 - the largest value yet seen will be scaled to 1.0, the smallest yet seen to 0.0.



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# File 'lib/rubyonacid/factories/input.rb', line 32

def put(key, value)
  value = value.to_f
  @input_values[key] ||= []
  @input_values[key] << value
  @smallest_seen_values[key] ||= 0.0
  if @largest_seen_values[key] == nil or @smallest_seen_values[key] > @largest_seen_values[key]
    @largest_seen_values[key] = @smallest_seen_values[key] + 1.0
  end
  @smallest_seen_values[key] = value if value < @smallest_seen_values[key]
  @largest_seen_values[key] = value if value > @largest_seen_values[key]
end