def page_to_graph(p, g=None):
if not g:
g = make_graph()
uri = abstract_uri(p)
g.add((uri, RDF.type, NDNP['Page']))
g.add((uri, NDNP['sequence'], Literal(p.sequence)))
g.add((uri, ORE['isAggregatedBy'], abstract_uri(p.issue)))
jp2_uri = URIRef(p.jp2_url)
g.add((uri, ORE['aggregates'], jp2_uri))
g.add((jp2_uri, DC['format'], Literal('image/jp2')))
g.add((jp2_uri, EXIF['width'], Literal(p.jp2_width)))
g.add((jp2_uri, EXIF['height'], Literal(p.jp2_length)))
ocr_uri = URIRef(p.ocr_url)
g.add((uri, ORE.aggregates, ocr_uri))
g.add((ocr_uri, DC['format'], Literal('text/xml')))
pdf_uri = URIRef(p.pdf_url)
g.add((uri, ORE.aggregates, pdf_uri))
g.add((pdf_uri, DC['format'], Literal('application/pdf')))
txt_uri = URIRef(p.txt_url)
g.add((uri, ORE.aggregates, txt_uri))
g.add((txt_uri, DC['format'], Literal('text/plain')))
thumb_uri = image_urls.thumb_image_url(p)
g.add((uri, ORE.aggregates, thumb_uri))
g.add((uri, FOAF.depiction, thumb_uri))
g.add((thumb_uri, DC['format'], Literal('image/jpeg')))
g.add((uri, DCTERMS['issued'], Literal(p.issue.date_issued,
datatype=XSD.date)))
g.add((uri, DCTERMS['title'], Literal('%s - %s - %s' %
(p.issue.title.display_name, p.issue.date_issued, p.sequence))))
if p.number:
g.add((uri, NDNP['number'], Literal(p.number)))
if p.section_label:
g.add((uri, NDNP['section'], Literal(p.section_label)))
add_rem(g, uri, rdf_uri(p))
return g
def thumb_image_url(page):
return image_urls.thumb_image_url(page)