Class: Wikipedia::VandalismDetection::Edit

Inherits:
Object
  • Object
show all
Defined in:
lib/wikipedia/vandalism_detection/edit.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(old_revision, new_revision, attributes = {}) ⇒ Edit

Returns a new instance of Edit.

Raises:

  • (ArgumentError) 


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# File 'lib/wikipedia/vandalism_detection/edit.rb', line 12

def initialize(old_revision, new_revision, attributes = {})
  message = "old revision: #{old_revision.id} | parent: #{old_revision.parent_id},
            new revision: #{new_revision.id} | parent: #{new_revision.parent_id}"

  raise ArgumentError, "Revisions are not sequent: #{message}." unless sequent?(old_revision, new_revision)

  @old_revision = old_revision
  @new_revision = new_revision
  @page = attributes[:page] || Page.new
end

Instance Attribute Details

#new_revision ⇒ Object (readonly)

Returns the value of attribute new_revision.



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# File 'lib/wikipedia/vandalism_detection/edit.rb', line 9

def new_revision
  @new_revision
end

#old_revision ⇒ Object (readonly)

Returns the value of attribute old_revision.



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# File 'lib/wikipedia/vandalism_detection/edit.rb', line 9

def old_revision
  @old_revision
end

#page ⇒ Object

Returns the value of attribute page.



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# File 'lib/wikipedia/vandalism_detection/edit.rb', line 10

def page
  @page
end

Instance Method Details

#inserted_text ⇒ Object

Returns a Text of the words inserted in the new revision compared with the old one.



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# File 'lib/wikipedia/vandalism_detection/edit.rb', line 52

def inserted_text
  @inserted_text ||= Text.new(inserted_words.join(' '))
end

#inserted_words ⇒ Object

Returns an array of the words inserted in the new revision compared with the old one.



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# File 'lib/wikipedia/vandalism_detection/edit.rb', line 46

def inserted_words
  @diff ||= Diff.new(@old_revision.text, @new_revision.text)
  @inserted_words ||= @diff.inserted_words
end

#removed_text ⇒ Object

Returns a Text of the words removed in the new revision compared with the old one.



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# File 'lib/wikipedia/vandalism_detection/edit.rb', line 63

def removed_text
  @removed_text ||= Text.new(removed_words.join(' '))
end

#removed_words ⇒ Object

Returns an array of the words removed in the new revision compared with the old one.



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# File 'lib/wikipedia/vandalism_detection/edit.rb', line 57

def removed_words
  @diff ||= Diff.new(@old_revision.text, @new_revision.text)
  @removed_words ||= @diff.removed_words
end

#serialize(*attributes) ⇒ Object 



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# File 'lib/wikipedia/vandalism_detection/edit.rb', line 23

def serialize(*attributes)
  old_revision_parts = []
  new_revision_parts = []

  attributes.each do |attr|
    if @old_revision.respond_to?(attr)
      old_revision_parts.push @old_revision.method(attr).call
    end
  end

  attributes.each do |attr|
    if @new_revision.respond_to?(attr)
      new_revision_parts.push @new_revision.method(attr).call
    end
  end

  old_revision_string = old_revision_parts.join(',')
  new_revision_string = new_revision_parts.join(',')

  "#{old_revision_string}\t#{new_revision_string}"
end