from lxml import etree
from lxml.etree import ElementTree
from django.db.models import Q
+from django.conf import settings
+from django.contrib.sites.models import Site
wl_dc_reader = metadata.MetadataReader(
class Catalogue(common.ResumptionOAIPMH):
TAG_CATEGORIES = ['author', 'epoch', 'kind', 'genre']
- def __init__(self):
+ def __init__(self, metadata_registry):
super(Catalogue, self).__init__()
+ self.metadata_registry = metadata_registry
+
+ self.oai_id = "oai:"+Site.objects.get_current().domain+":%s"
# earliest change
year_zero = datetime(1990, 1, 1, 0, 0, 0)
try:
earliest_delete = \
- Deleted.objects.ordery_by('deleted_at')[0].deleted_at
+ Deleted.objects.exclude(slug__exact=u'').ordery_by('deleted_at')[0].deleted_at
except: earliest_delete = year_zero
self.earliest_datestamp = earliest_change <= earliest_delete and \
earliest_change or earliest_delete
- # admins
- self.admin_emails = [u.email for u in User.objects.filter(is_superuser=True)]
-
def metadata(self, book):
- xml = etree.parse(book.xml_file)
+ try:
+ xml = etree.parse(book.xml_file)
+ finally:
+ book.xml_file.close()
md = wl_dc_reader(xml)
return md.getMap()
def record_for_book(self, book, headers_only=False):
meta = None
+ identifier = self.slug_to_identifier(book.slug)
if isinstance(book, Book):
- header = common.Header(book.slug, book.changed_at, [], False)
+ # setSpec = map(self.tag_to_setspec, book.tags.filter(category__in=self.TAG_CATEGORIES))
+ header = common.Header(identifier, book.changed_at, [], False)
if not headers_only:
meta = common.Metadata(self.metadata(book))
about = None
elif isinstance(book, Deleted):
- header = common.Header(book.slug, book.deleted_at, [], True)
+ header = common.Header(identifier, book.deleted_at, [], True)
if not headers_only:
meta = common.Metadata({})
about = None
+ if headers_only:
+ return header
return header, meta, about
def identify(self, **kw):
ident = common.Identify(
'Wolne Lektury', # generate
'%s/oaipmh' % WL_BASE, # generate
- '1.1', # version
- self.admin_emails, # adminEmails
+ '2.0', # version
+ [m[1] for m in settings.MANAGERS], # adminEmails
self.earliest_datestamp, # earliest datestamp of any change
'persistent', # deletedRecord
'YYYY-MM-DDThh:mm:ssZ', # granularity
- 'identity', # compression
+ ['identity'], # compression
[] # descriptions
)
return ident
def books(self, tag, from_, until):
if tag:
- books = Book.tagged.with_all([tag])
+ # we do not support sets, since they are problematic for deleted books.
+ raise errror.NoSetHierarchyError("Wolne Lektury does not support sets.")
+ # books = Book.tagged.with_all([tag])
else:
books = Book.objects.all()
- deleted = Deleted.objects.all()
+ deleted = Deleted.objects.exclude(slug__exact=u'')
books = books.order_by('changed_at')
+ deleted = deleted.order_by('deleted_at')
if from_:
books = books.filter(changed_at__gte=from_)
deleted = deleted.filter(deleted_at__gte=from_)
if until:
books = books.filter(changed_at__lte=until)
- deleted = deleted.filter(deleted_at__gte=until)
+ deleted = deleted.filter(deleted_at__lte=until)
return list(books) + list(deleted)
@staticmethod
cs = s.split(':')
if len(cs) == 2:
if not cs[0] in Catalogue.TAG_CATEGORIES:
- raise error.NoSetHierarchyError()
+ raise error.NoSetHierarchyError("No category part in set")
tag = Tag.objects.get(slug=cs[1], category=cs[0])
return tag
- raise error.NoSetHierarchyError()
+ raise error.NoSetHierarchyError("Setspec should have two components: category:slug")
def getRecord(self, **kw):
"""
Returns (header, metadata, about) for given record.
"""
- slug = kw['record']
+ slug = self.identifier_to_slug(kw['identifier'])
try:
book = Book.objects.get(slug=slug)
return self.record_for_book(book)
deleted_book = Deleted.objects.get(content_type=book_type,
slug=slug)
except:
- raise error.NoRecordsMatchError()
+ raise error.IdDoesNotExistError("No item for this identifier")
return self.record_for_book(deleted_book)
+ def validate_kw(self, kw):
+ if 'resumptionToken' in kw:
+ raise error.BadResumptionTokenError("No resumption token support at this point")
+ if 'metadataPrefix' in kw and not self.metadata_registry.hasWriter(kw['metadataPrefix']):
+ raise error.CannotDisseminateFormatError("This format is not supported")
+
+ def identifier_to_slug(self, ident):
+ return ident.split(':')[-1]
+
+ def slug_to_identifier(self, slug):
+ return self.oai_id % slug
+
def listIdentifiers(self, **kw):
+ self.validate_kw(kw)
records = [self.record_for_book(book, headers_only=True) for
- book in self.books(
- self.setspec_to_tag(
- kw.get('set', None)),
- kw.get('from', None),
+ book in self.books(None,
+ kw.get('from_', None),
kw.get('until', None))]
- return records
+ return records, None
def listRecords(self, **kw):
"""
can get a resumptionToken kw.
returns result, token
"""
+ self.validate_kw(kw)
records = [self.record_for_book(book) for
- book in self.books(
- self.setspec_to_tag(
- kw.get('set', None)),
- kw.get('from', None),
+ book in self.books(None,
+ kw.get('from_', None),
kw.get('until', None))]
return records, None
def listMetadataFormats(self, **kw):
- return [('oaidc',
+ formats = [('oai_dc',
'http://www.openarchives.org/OAI/2.0/oai_dc.xsd',
server.NS_OAIDC)]
+ if 'identifier' in kw:
+ slug = self.identifier_to_slug(kw['identifier'])
+ try:
+ b = Book.objects.get(slug=slug)
+ return formats
+ except:
+ try:
+ d = Deleted.objects.get(slug=slug)
+ return []
+ except:
+ raise error.IdDoesNotExistError("This id does not exist")
+ else:
+ return formats
def listSets(self, **kw):
- tags = []
- for category in Catalogue.TAG_CATEGORIES:
- for tag in Tag.objects.filter(category=category):
- tags.append(("%s:%s" % (tag.category, tag.slug),
- tag.name,
- tag.description))
- return tags
+ raise error.NoSetHierarchyError("Wolne Lektury does not support sets.")
+ # tags = []
+ # for category in Catalogue.TAG_CATEGORIES:
+ # for tag in Tag.objects.filter(category=category):
+ # tags.append(("%s:%s" % (tag.category, tag.slug),
+ # tag.name,
+ # tag.description))
+ # return tags, None
+
+
fnp / wolnelektury.git / blobdiff