Class: Pal::Operation::RuleFactory

Inherits:
Object
  • Object
show all
Defined in:
lib/pal/operation/filter_evaluator.rb

Overview

Class to manage the rules provided

Class Method Summary collapse

Class Method Details

.from_group_rules(group_rule) ⇒ Array<Rule>

Returns:



54
55
56
57
58
59
60
 
# File 'lib/pal/operation/filter_evaluator.rb', line 54

def self.from_group_rules(group_rule)
  rules = group_rule.fetch("rules", [])

  rules.map do |rule_hash|
    from_hash(rule_hash)
  end
end

.from_hash(rule_hash) ⇒ Rule

rubocop:disable Metrics/AbcSize

Parameters:

  • rule_hash (Hash)

Returns:



34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
 
# File 'lib/pal/operation/filter_evaluator.rb', line 34

def self.from_hash(rule_hash)
  return nil if rule_hash.nil? || rule_hash.keys.empty?

  if rule_hash.key?("condition")
    condition = rule_hash.fetch("condition")
    rules = RuleFactory.from_group_rules(rule_hash)

    return AndGroupRule.new(rules) if condition.casecmp("and").zero?
    return OrGroupRule.new(rules) if condition.casecmp("or").zero?

    raise "Invalid condition [#{condition}] passed."
  end

  return OperatorRule.new(rule_hash) if rule_hash.key?("operator")

  raise "Hash is malformed."
end