class Fedora::Datastream

def control_group
  @attributes[:controlGroup]
end

def control_group=(cg)
  @attributes[:controlGroup]=cg
end

def dsid
  if attributes.has_key?(:dsid) 
    attributes[:dsid]
  else
    attributes[:dsID]
  end
end

def initialize(attrs = {})
  super
  if attrs
    if attrs[:mime_type] 
      self.mime_type = attrs[:mime_type]
    elsif attrs[:mimeType] 
      self.mime_type = attrs[:mimeType]
    end 
  end
  self.control_group='M' if @attributes[:mimeType]
end

def label
  @attributes[:dsLabel]
end

def label=(new_label)
  @attributes[:dsLabel] = new_label
end

def pid
  attributes[:pid]
end

def uri
  "fedora:info/#{pid}/datastreams/#{dsid}"
end

def url
  return "#{Fedora::Repository.instance.base_url}/objects/#{pid}/datastreams/#{dsid}"
end