Ruote::Exp::MergeMixin

# File lib/ruote/exp/merge.rb, line 63
def merge_workitem(index, target, source, merge_type)

  return source if merge_type == 'override'

  if target == nil

    case merge_type

      #when 'mix'
         # do nothing

      when 'stack'
        source['fields'] = { 'stack' => [ source['fields'] ] }

      when 'isolate'
        source['fields'] = { index.to_s => source['fields'] }

      #when 'union', 'concat'
         # do nothing
    end

    source

  else

    case merge_type

      when 'mix'

        target['fields'].merge!(source['fields'])

      when 'stack'

        target['fields']['stack'] << source['fields']
        target['fields']['stack_attributes'] = compile_atts

      when 'isolate'

        target['fields'][index.to_s] = source['fields']

      when 'union', 'concat'

        source['fields'].each do |k, sv|

          tv = target['fields'][k]

          if sv.is_a?(Array) and tv.is_a?(Array)
            tv.concat(sv)
            tv.uniq! if merge_type == 'union'
          elsif sv.is_a?(Hash) and tv.is_a?(Hash)
            tv.merge!(sv)
          else
            target['fields'][k] = sv
          end
        end
    end

    target
  end
end

# File lib/ruote/exp/merge.rb, line 38
def merge_workitems(workitems, merge_type)

  rworkitems = workitems.reverse

  workitems.inject(nil) do |t, wi|
    merge_workitem(workitems.index(wi), t, wi, merge_type)
  end
end