Influence include order

[vinzent]

I've got some parse order dependent code. To be able to switch to this or any external classifier I'd need some way to influence the order the classes are included.

I thought about that the rules could take a key order to sort the rules.

Then (hopefully) the classify::apply each would include them in the desired order.

example in pure ruby:

hsh = {
  'rule-z' => {
    'match' => 'all',
    'rules' => [
      {
        'fact' => "%{facts.os.name}",
        'operator' => '==',
        'value' => 'Fedora'
     }
    ],
    'classes' => [ 'class-z' ],
    'order' => 600,
  },
  'rule-a' => {
    'match' => 'all',
    'rules' => [
      {
        'fact' => "%{facts.os.name}",
        'operator' => '==',
        'value' => 'Fedora'
     }
    ],
    'classes' => [ 'class-a' ],
    'order' => 500,
  },
}
puts "Original:"
puts hsh

puts
puts "Sorted:"
puts Hash[hsh.sort_by { |k,v| hsh[k]['order'] }]

output:

Original:
{"rule-z"=>{"match"=>"all", "rules"=>[{"fact"=>"%{facts.os.name}", "operator"=>"==", "value"=>"Fedora"}], "classes"=>["class-z"], "order"=>600}, "rule-a"=>{"match"=>"all", "rules"=>[{"fact"=>"%{facts.os.name}", "operator"=>"==", "value"=>"Fedora"}], "classes"=>["class-a"], "order"=>500}}

Sorted:
{"rule-a"=>{"match"=>"all", "rules"=>[{"fact"=>"%{facts.os.name}", "operator"=>"==", "value"=>"Fedora"}], "classes"=>["class-a"], "order"=>500}, "rule-z"=>{"match"=>"all", "rules"=>[{"fact"=>"%{facts.os.name}", "operator"=>"==", "value"=>"Fedora"}], "classes"=>["class-z"], "order"=>600}}