Class: ROF::Filters::Work

Inherits:
Object
  • Object
show all
Defined in:
lib/rof/filters/work.rb

Overview

Expand objects of type “Work(-(.+))?” into a constellation of “fobjects”. Makes a fobject/generic_file for each file adds a depositor turns original object into an fobject/$1 and copies the access to each fobject.

Defined Under Namespace

Classes: NoFile

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Work

Returns a new instance of Work.



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# File 'lib/rof/filters/work.rb', line 15

def initialize
  @utility = ROF::Utility.new
end

Instance Method Details

#make_thumbnail(result, main_obj, input_obj) ⇒ Object

make the first file be the representative thumbnail



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# File 'lib/rof/filters/work.rb', line 41

def make_thumbnail(result, main_obj, input_obj)
  thumb_rep = nil
  input_obj['files'].each do |finfo|
    if finfo.is_a?(String)
      fname = finfo
      finfo = { 'files' => [fname] }
    else
      fname = finfo['files'].first
      raise NoFile if fname.nil?
    end
    finfo['rights'] ||= input_obj['rights']
    finfo['owner'] ||= input_obj['owner']
    finfo['bendo-item'] ||= input_obj['bendo-item']
    finfo['metadata'] ||= {
      '@context' => ROF::RdfContext
    }
    finfo['metadata']['dc:title'] ||= fname
    mimetype = MIME::Types.of(fname)
    mimetype = mimetype.empty? ? 'application/octet-stream' : mimetype.first.content_type
    f_obj = {
      'type' => 'fobject',
      'af-model' => 'GenericFile',
      'pid' => finfo['pid'],
      'bendo-item' => finfo['bendo-item'],
      'rights' => finfo['rights'],
      'properties' => ROF::Utility.prop_ds(finfo['owner']),
      'properties-meta' => {
        'mime-type' => 'text/xml'
      },
      'rels-ext' => {
        'isPartOf' => [main_obj['pid']]
      },
      'content-file' => fname,
      'content-meta' => {
        'label' => fname,
        'mime-type' => mimetype
      },
      'collections' => finfo['collections'],
      'metadata' => finfo['metadata']
    }
    f_obj.delete_if { |_k, v| v.nil? }
    if thumb_rep.nil?
      thumb_rep = f_obj['pid']
      if thumb_rep.nil?
        thumb_rep = @utility.next_label
        f_obj['pid'] = thumb_rep
      end
      main_obj['properties'] = ROF::Utility.prop_ds(input_obj['owner'], thumb_rep)
    end
    result << f_obj
  end
  result
end

#process(obj_list, filename) ⇒ Object

wade through object list



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# File 'lib/rof/filters/work.rb', line 20

def process(obj_list, filename)
  @utility.set_workdir(filename)
  obj_list.map! { |x| process_one_work(x) }
  obj_list.flatten!
end

#process_one_work(input_obj) ⇒ Object

given a single object, return a list (possibly empty) of new objects to replace the one given



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# File 'lib/rof/filters/work.rb', line 28

def process_one_work(input_obj)
  model = @utility.decode_work_type(input_obj)
  return [input_obj] if model.nil?
  return [ROF::Collection.process_one_collection(input_obj, @utility)] if model == 'Collection'

  main_obj = set_main_obj(input_obj, model)

  result = [main_obj]
  result = make_thumbnail(result, main_obj, input_obj) unless input_obj['files'].nil?
  result
end

#set_main_obj(input_obj, model) ⇒ Object 



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# File 'lib/rof/filters/work.rb', line 95

def set_main_obj(input_obj, model)
  result = {}

  result['type'] = 'fobject'
  result['af-model'] = model
  result['pid'] = input_obj.fetch('pid', @utility.next_label)
  result['bendo-item'] = input_obj['bendo-item']
  result['rights'] = input_obj['rights']
  result['properties'] = ROF::Utility.prop_ds(input_obj['owner'])
  result['properties-meta'] = { 'mime-type' => 'text/xml' }
  result['rels-ext'] = input_obj.fetch('rels-ext', {})
  result['metadata'] = input_obj['metadata']
  result
end