Class: Ruleby::Core::Fact

Inherits:
Object
  • Object
show all
Defined in:
lib/core/engine.rb

Overview

A fact is an object that is stored in working memory. The rules in the system will either look for the existence or absence of particular facts.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(object, token) ⇒ Fact

Returns a new instance of Fact.



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# File 'lib/core/engine.rb', line 117

def initialize(object, token)
  @token = token      
  @object = object
end

Instance Attribute Details

#object ⇒ Object (readonly)

Returns the value of attribute object.



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# File 'lib/core/engine.rb', line 115

def object
  @object
end

#recency ⇒ Object

Returns the value of attribute recency.



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# File 'lib/core/engine.rb', line 114

def recency
  @recency
end

#token ⇒ Object

Returns the value of attribute token.



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# File 'lib/core/engine.rb', line 113

def token
  @token
end

Instance Method Details

#==(fact) ⇒ Object 



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# File 'lib/core/engine.rb', line 126

def ==(fact)
  if fact.is_a? Fact
    fact != nil && fact.id == id
  else
    fact != nil && fact.object_id == id
  end
end

#id ⇒ Object 



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# File 'lib/core/engine.rb', line 122

def id
  return object.object_id
end

#to_s ⇒ Object 



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# File 'lib/core/engine.rb', line 134

def to_s
  "[Fact |#{@recency}|#{@object.to_s}]"
end