Class: FlowEngine::Rules::All

Inherits:

Base

• Object
• Base
• FlowEngine::Rules::All

Defined in:

lib/flowengine/rules/all.rb

Overview

Composite rule: logical AND of multiple sub-rules. All must be true.

Instance Attribute Summary

• #rules ⇒ Array<Base> readonly

  sub-rules to evaluate.

Instance Method Summary

• #evaluate(answers) ⇒ Boolean

  True if every sub-rule evaluates to true.

• #initialize(*rules) ⇒ All constructor

  A new instance of All.

• #to_s ⇒ String

  E.g.

Constructor Details

#initialize(*rules) ⇒ All

Returns a new instance of All.

Parameters:

• rules (Array<Base>) —

  one or more rules (arrays are flattened)

# File 'lib/flowengine/rules/all.rb', line 12

def initialize(*rules)
  super()
  @rules = rules.flatten.freeze
  freeze
end

Instance Attribute Details

#rules ⇒ Array<Base> (readonly)

sub-rules to evaluate

Returns:

• (Array<Base>) —

  the current value of rules

# File 'lib/flowengine/rules/all.rb', line 8

def rules
  @rules
end

Instance Method Details

#evaluate(answers) ⇒ Boolean

Returns true if every sub-rule evaluates to true.

Parameters:

• answers (Hash) —

  current answers

Returns:

• (Boolean) —

  true if every sub-rule evaluates to true

# File 'lib/flowengine/rules/all.rb', line 20

def evaluate(answers)
  rules.all? { |rule| rule.evaluate(answers) }
end

#to_s ⇒ String

Returns e.g. "(rule1 AND rule2 AND rule3)".

Returns:

• (String) —

  e.g. "(rule1 AND rule2 AND rule3)"

# File 'lib/flowengine/rules/all.rb', line 25

def to_s
  "(#{rules.join(" AND ")})"
end