Module: Ldp::Response::Paging

Defined in:
lib/ldp/response/paging.rb

Instance Method Summary collapse

Instance Method Details

#first_page ⇒ Object

Get the URI to the first page



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# File 'lib/ldp/response/paging.rb', line 45

def first_page
  if links['first']
    RDF::URI.new links['first']
  elsif graph.has_statement? RDf::Statement.new(page_subject, Ldp.nextPage, nil)
    subject
  end
end

#has_next? ⇒ Boolean

Is there a next page?



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# File 'lib/ldp/response/paging.rb', line 33

def has_next?
  next_page != nil
end

#next_page ⇒ Object

Get the URI for the next page



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# File 'lib/ldp/response/paging.rb', line 39

def next_page
  graph.first_object [page_subject, Ldp.nextPage, nil]
end

#page ⇒ Object

Statements about the page



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# File 'lib/ldp/response/paging.rb', line 5

def page
  @page_graph ||= begin
    g = RDF::Graph.new  

    if resource?
      res = graph.query RDF::Statement.new(page_subject, nil, nil)

      res.each_statement do |s|
        g << s
      end
    end

    g
  end
end

#sort ⇒ Object 



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# File 'lib/ldp/response/paging.rb', line 53

def sort

end

#subject ⇒ Object

Get the subject for the response



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# File 'lib/ldp/response/paging.rb', line 23

def subject
  @subject ||= if has_page?
    graph.first_object [page_subject, Ldp.page_of, nil]
  else
    page_subject
  end
end